Must Have Mac Apps 2019
Must have Mac Apps 2019
BOOKMARKING SHOULD BE EASY
Kozmos is smarter than the bookmarking services you've seen before. It understands the type of content and shows you in a meaningful way.
PRIVATE. Your bookmarks can only seen by you. Kozmos puts your privacy first.
ORGANIZED. Kozmos automagically organizes your bookmarks for you!
OFFLINE FRIENDLY. Your data is stored in your browser. It gets synced when you're online!
WORKS EVERYWHERE. Kozmos runs on all platforms, and offers plugins for all web browsers. -- (https://getkozmos.com)
THE email app I have been waiting for all my life! With chat-like conversations - June organizes your conversations by contact so you quickly find what you need and get through messages faster. Built by productivity experts, June has an minimalistic & efficient approach to processing your messages + the user-interface is one hell of an eye-candy! <3
My favorite Email App - It is so simple and pragmatic <3 I love it!
Super easy to share photos & videos between devices. No Cloud, No Servers, No Limits, Transfer sensitive files in your LAN, without the Cloud. There are no servers to hack into. It's blazing fast, all local transfers are encrypted with TLS and it works on all major platforms. PLUS: No app installation needed & it's totally FREE! All you need is a browser (and 2+ devices). Simply the best LOCAL file transfer app on the web!
pCloud is a cloud- based digital asset management platform and cloud storage that provides access to all your digital content including images,video, audio,documents, and more- anytime, anywhere,on any device. Keep all of your important files safe and centralized in one place. You can share with team members, clients, etc. across the globe and give them controlled access and permissions to your digital library.
It has a user-friendly interface that clearly shows where everything is located and what it does. The software is available for multiple platforms – iOS and Android devices, Mac, Windows, and Linux.
By installing pCloud on your computer (through its desktop application pCloud Drive), the app creates a secure virtual drive which expands your local storage space. Every change you make in your pCloud can be seen immediately on your computer, phone or tablet. All your devices are instantly synchronized and you have direct file access to any update you make.
pCloud's latest feature Branded links allows you to customize download links with your brand's style and logo.
pCloud Crypto is a highest level of security for your files.You could save your sensitive information, and your private documents in the cloud, and to have them on any device. Nobody has access to these files, including the administrators of pCloud. With client-side encryption , your files are encrypted locally on your computer and only the encrypted information is uploaded in the cloud. The files never leave your device without the encryption
They have life-time option for 500GB and 2TB for 175€ and 350€, but in 2021 black friday lowered to 122.5€ and 245€
Helium is a floating browser window that allows you to watch media while you work. Your content will never fall behind your other windows even as you switch tasks.
Helium supports a customizable translucency mode that allows you to simultaneously see your content and your work. Even cooler, Helium does not intercept mouse clicks when it is translucent! That's right, you can still click, drag, scroll, even flick behind your floating content. When you want to interact with the browser again, just click the icon in the dock and you're back in control.
Übersicht lets you run system commands and display their output on your desktop in little containers, called widgets. Widgets are written using HTML5, which means they
- are easy to write and customize
- can show data in tables, charts, graphs ... you name it
- can react to different screen sizes
Put Your Mac on Autopilot
You've already got enough to think about, so Endurance automatically integrates with your Mac. When your battery hits the 70% charge level, you'll be prompted to go into low power mode. Or, are you a consistent user? You can have Endurance kick in automatically. Interested in a different trigger level? It's all customizable. You can even have it start up the minute you unplug your battery from your Mac.
With an black true color overlay and a slider you can turn down the brightness to any level. Perfect! Because for me the lowest brightness of may Mac is still to bright at night. NightTone is just what I needed :D
Workspaces is a straightfoward productivity tool for Mac to recreate your work environment in two clicks. Simply drop files, folders, apps and websites into the application and select the ones you want to auto-launch. Open them all by clicking the START button.
Grids - Experience Instagram in beautiful way on Mac
Post Photos and Videos
Upload photos and videos directly from your desktop.
Switch between multiple accounts seamlessly.
Clean and smart UI works amazingly at fullscreen as well as at widget-size.
Get notification when there are new feed, followers, likes, comments, mentions or requests.
Achieving All Tasks
Like, comment, follow, search, explore.
View and post Stories. The only desktop app that supports Instagram Stories!
Star conversation with friends. Share posts, profiles, tags and locations.
Automatically adjust layout to window size, presenting Instagram photos beautifully.
Utilize your big screen. View photos and vides in large/fullscreen view. Grids is for Desktop!
Bookmark people, location, hashtag or single photo/video.
ForkLift is designed to be the fastest, most powerful file manager for the Mac. Connect to FTP or SFTP servers, manage your Amazon S3 account or your mobile devices over Bluetooth. All these features are beautifully integrated into a sophisticated, yet easy to use Cocoa based interface. Dual-pane view will dramatically increase your productivity along with state-of-the-art features like live preview, spring loaded folders and any-to-any workflow. All this to be topped by tabs, to keep your workspace nice and clean.
Automated organization for your Mac.
Hazel watches whatever folders you tell it to, automatically organizing your files according to the rules you create. Have Hazel move files around based on name, date, type, what site it came from and much more. Automatically sort your movies or file your bills. Keep your files off the desktop and put them where they belong.
More Than Just Filing
Hazel can open, archive, tag and even upload. You can have Hazel rename your files or sort them into subfolders based on name, date or whatever combination of attributes you choose. Coupled with Hazel’s powerful pattern matching, you can create workflows to process your files, your way.
Taking Out The Trash
Have Hazel keep your trash in check, deleting files that are too old or clearing things out when the trash gets too big. Also, when you delete applications, they can leave behind support files that never get cleaned up. With Hazel’s App Sweep, Hazel will detect when you throw an application away, search for its support files and offer to throw those away as well.
Spotlight integration. Photos, Music & TV importing. Notifications. Tags. AppleScript & Automator. Hazel provides deep support for macOS technologies, leveraging everything your system has to offer.
Duet makes your iPad and your Mac more powerful together. Slide Mac apps to your iPad as a second display. No lag, Duet helps you multi-task and work faster with more screen space. It doesn't require internet, just plug and play to get started and you can use the iPad's touch display too. Draw on the screen, produce beats with midi boards, design on the iPad and more.
Duet is used by industrial designers, software developers, musicians, illustrators and more. It's portability has made Duet useful in coffeeshops, airports and conferences.
More space. More play. More speed. More touch.
Combine the power of your devices with Duet.
Now for Mac & PC.
Franz is a free messaging app / former Emperor of Austria and combines chat & messaging services into one application. Franz currently supports Slack, WhatsApp, WeChat, HipChat, Facebook Messenger, Telegram, Google Hangouts, GroupMe, Skype and many more. You can download Franz for Mac, Windows & Linux. An account is required to use the application.
Telegram is a messaging app created by former VK creators with a focus on speed and security. It’s superfast, simple and free. It is like SMS, but more powerful.
You can send messages, photos and videos to people who are in your phone contacts (and have Telegram). You can also create groups for up to 200000 people or channels for unlimited subscribers.
Your chats are not encrypted by default, which enables other people to see what you are writing. You can enable a "Secret Chat" to enable end-to-end encryption.
Telegram offers a Premium plan too: by subscribing to Telegram Premium, users unlock doubled limits, 4 GB file uploads, faster downloads, exclusive stickers and reactions, improved chat management – and a whole lot more. At the same time, all existing features that users have come to expect and rely on for nearly a decade remain free. Moreover, non-premium users will be able to enjoy some of Premium's benefits: for example, download the extra-large documents and view stickers sent by premium users, as well as tap to increase counters on premium reactions that were already added to a message. There are different prices for the Premium subscription based on your country, also if you buy it via the @premiumbot you don't have to pay the app store fees.
Telegram's security model has received notable criticism by cryptography experts. They criticized the general security model of permanently storing all contacts, messages and media together with their decryption keys on its servers by default and by not enabling end-to-end encryption for messages by default.
Telegram's client-side code is open-source software, whereas its server-side code is closed-source and proprietary. The service also provides public APIs with which developers can access the same functionality as Telegram's official apps to build their own messaging applications.
Telegram also provides a bot API for programmers to create different kinds of Telegram bots. Bots are simply Telegram accounts operated by software – not people – and they'll often have AI features. They can do anything – teach, play, search, broadcast, remind, connect, integrate with other services, or even pass commands to the Internet of Things.
KeePassXC is a community fork of KeePassX, the cross-platform port of KeePass for Windows. Every feature is cross-platform and tested to give users the same feel on each operating system, including the loved auto-type feature.
The complete database is always encrypted with the AES (alias Rijndael) encryption algorithm using a 256 bit key. KeePassXC uses a database format that is compatible with KeePass Password Safe. Your wallet always works offline and requires no Internet connection.
The source code is published under the terms of the GNU General Public License. KeePassXC is and always will be free as in freedom as well as in beer. Contributions from everyone are welcome.
Finito is a live wallpaper app with a countdown, percentage or progress bar for follow your deadline and boost your productivity. Just set a start date and a deadline, customize the wallpaper and menu bar and ready, the motivational boost will be present every time you see the screen.
Your boring wallpaper is a motivational machine
- Automatically refresh displaying a countdown, percentage, or animation that reflects progress.
- Multiple deadline styles to customize the wallpaper.
- Customize the color of the deadline and the size.
- Customize the background color and even use a custom background image!
- Customize the countdown format, enabling or disabling years, months, days, hours and minutes.
- Change the wallpaper on the main screen or multiple screens as you prefer.
When your wallpaper is hidden, there's the Bar
- Choose from different icons styles that will dynamically show progress.
- Customize the format between countdown or percentage
- Customize the countdown format, enabling or disabling years, months, days, hours and minutes.
- Combine dynamics icons with countdown or percentage and enable or disable as you prefer.
AnyTrans is the ultimate iProduct manager that converge your entire apple products and consolidates every access to all your content in one place, including music, videos, photos, messages, books, Safari history, voice memo, and more. No matter the content is from your iPhone, computer, even iTunes or iCloud. It gives efficient & minimalist control and absolute freedom over all your iOS data and files. #1 Move everything from Android device to your new iPhone - Transfer the most of your Android content to your new iPhone, including messages, photos, contact, even music and call log, etc. #2 Migrate everything from old iPhone to your new one within one click clone - Upon just one simple click, everything from your old iPhone, even from iPad - will be cloned to your new iPhone. #3 Download millions of online videos and audios - Download your favorite online videos from Dailymotion, Facebook, Instagram, and another 900+ sites directly to your iPhone iPad for offline watching, or to your computer for collection. #4 Easily manage all your contents on iPhone, iPad, and iPod touch - Browse, edit and export important music, messages, notes, and more personal data from iPhone, iPad, and iPod touch. #5 Full-way transfer across your iOS devices, iTunes, iCloud and computer - gets anything transferred freely between your iPhone, iPad, iPod touch, iTunes, iCloud and computer - from iPhone to computer, iPhone to iPhone, iPhone to iTunes, computer to iPhone, etc. #6 Back up your iPhone iPad automatically as scheduled. Preview all your iTunes and iCloud backups & selectively extract contents from any of those backups. #7 Make your own ringtone with audio from iPhone, iTunes Library, computer, or YouTube. #8 Search and download iOS apps to computer for backup, and update, uninstall all iOS apps at one place.
Raindrop.io saves not just bookmarks but associated content depending on page type.
Supports articles, photos, videos, presentations, website screenshots and more. Supports all your favorite sites
If it's an article, it will be cut and saved with the bookmark. The same applies to video, photo and presentations. So you can organize thematic collections with different content.
Available from a web interface, browser extension & mobile apps.
Bumpr is a Mac app that lets you choose where to open links.
Vivaldi is extremely customizable, presenting a wide range of settings and built-in features designed to put the user in control. Its Chromium-based engine makes it fast and compatible with most Chrome extensions, and Vivaldi removes the code that tracks users from it.
It includes fully customizable web browser behaviors, mouse gestures and keyboard shortcuts, Quick Commands, the usual unlimited Speed Dial page, notes that can also be synchronized with the browser data, a webpage screenshot tool, a panel for displaying and managing bookmarks, history, etc, where users can also add their own web panels; the ability to edit the browser theme and toolbars by moving or removing buttons from the interface, moving the tab bar to the side or and/or the address bar to bottom of the window; powerful tab management with tab stacking, tiling and the windows panel, etc...
Vivaldi offers a built-in ad-blocker and partners with DuckDuckGo for the tracker blocker. There is also a support for blocking cookie banners https://vivaldi.com/blog/vivaldi-crumbles-cookie-dialogs-raises-privacy/ with the help of a popular extension named I don't care about cookies and Easylist Cookie List.
A Vivaldi account gives access to the browser data sync, the Vivaldi Community (blogging platform), support forums and Vivaldi Webmail.
It's considered the spiritual successor of the original Opera browser before the complete rewrite that scrapped many of its features and options and the move of the ownership of Opera Software to a consortium of Chinese investors. Vivaldi Technologies was founded by the co-founder and former CEO of Opera, Jon Stephenson von Tetzchner, and Tatsuki Tomita.
Very good free alternative to 7zip for Mac user, allows you to view compressed file contents and extract only what you want, etc.
CleanMyMac scans every inch of your system and safely removes gigabytes of junk in just two clicks. Free up storage on your Mac and boost its performance — CleanMyMac finds 74 GB of junk on an average computer.
Dr. Cleaner is an all-in-one app that offers Memory Optimization, Disk Cleaning and System Monitoring to keep your Mac optimized for the best performance. With a brand new user interface, Dr. Cleaner provides an easy-to-use way to optimize the performance of your Mac! Also, with Dr. Cleaner, you can easily view real-time network usage and CPU usage in the menu bar.
[Smart Memory Optimizer] • 1-click memory optimization • Instantly reclaim memory from closed Apps • Identify Apps that use a significant amount of memory
[Junk Files Cleaner] • Quick disk clean from status bar menu • Clean temporary files, incl. logs, mail caches, iTunes and iOS temporary files, etc.Empty Trash for current user • Clever detection of remaining files after deleting Apps • Clean trash in removable storage
[Big Files Scanner] • 1-click scan of big files (customizable size from 10 MB and above) • Multiple filters of size, date, name and type • Local files in sync with your cloud drives can also be found • Protected files* will not be deleted [* Important big files can be "locked" into the protected list to avoid false deletion.]
[Duplicate Finder] • It has the fast and accurate scanning technique that covers your entire home folder. • Duplicates are selected not only by file names but also by their contents. Files are shown in detailed previews. it can also help you "decide" which copy to delete by presenting "Auto Select" button. • Duplicates can be sorted by file type and listed in their full route for you to track. You can decide which way to clean these files - either by putting them in to Trash or deleting them permanently.
[Intelligent App Manager] • Auto-clean leftover files of deleted apps • Easily manage all apps installed on your Mac • Clearly and easily view all app information installed on your Mac • List all apps installed on your Mac by name, size, and last opened date
CCleaner is a system optimization/cleaning tool. It removes unused files from your system, allowing Windows to run faster and freeing up valuable hard disk space. It can also clear your internet history and act as a fully featured registry cleaner. CCleaner is fast (normally taking less than a second to run) and contains NO spyware or adware!
A firewall protects your computer against unwanted guests from the Internet. But who protects your private data from being sent out? Little Snitch does!
As soon as you’re connected to the Internet, applications can potentially send whatever information they want to wherever they want.
Sometimes they do this for good reason, on your explicit request. But often they don’t. Little Snitch allows you to intercept these unwanted connection attempts, and lets you decide how to proceed.
Little Snitch informs you whenever a program attempts to establish an outgoing Internet connection. You can then choose to allow or deny this connection, or define a rule how to handle similar, future connection attempts. This reliably prevents private data from being sent out without your knowledge. Little Snitch runs inconspicuously in the background and it can also detect network related activity of viruses, trojans and other malware.
Note: prices are based on a purchase or upgrade of a single licence on 10 October 2017: discounts exists for multiple licences.
Email, meet AI. Canary can write your emails, prioritize what needs attention, silence spam & much more. Say hello to your Inbox Copilot!
Smart Inbox automatically detects if an email is personal, a notification or a newsletter and groups it with similar emails for easy batch processing using beloved swipes. With just a glance, you can see if emails are important or just a product announcement from a service you've never used.
We all love the feeling of accomplishment when we have finally dealt with our inbox. Spark makes this easy to achieve. Quickly process your emails, swiping to archive or delete as necessary. Pin emails which relate to things you need to do today, or quickly swipe left to archive those you've already dealt with. If you can't finish a task today, swipe to snooze for tomorrow or another day (if you're really busy).
A few more reasons to love Spark:
UNIFIED INBOX See all of your important email at a glance, with a unified inbox which knows the difference between a personal email, a notification and a newsletter.
SMART SEARCH Use natural language to search through your emails. Type "attachments from Alex last week" to see all the emails sent to you last week by Alex with an attachment.
SIGNATURES Spark will automatically find your most used signatures. So you can quickly swipe between them when composing an email, to choose the one that's best suited.
QUICK REPLIES Let your friends and colleagues quickly know what you thought about their email with one tap to send a "Like", "Thanks" or any other custom reply.
SMART NOTIFICATIONS Enable Smart Notifications to only be disturbed by emails you care about.
SAVE ATTACHMENTS Save attachments to iCloud Drive, Google Drive, Dropbox, OneDrive, Readability, Pocket, Evernote, OneNote or any application on your iPhone and iPad.
SAVE EMAILs AS PDFs
Zoho Mail is an integrated email suite for modern enterprises, complete with Calendar, Notes, Tasks, Contacts, and Bookmarks. With over 15 million satisfied users and a decade of experience as a business email provider, we’re equipped to sail through any challenge unique to an enterprise—protection and privacy for large volumes of data, user accounts management, complex workflows, and scalability. Enjoy hassle-free implementation and quick migration from any other email service provider.
Wunderlist helps millions of people around the world capture their ideas, things to do and places to see.
Whether you’re sharing a grocery list with a loved one, working on a project, or planning a vacation, Wunderlist makes it easy to share your lists and collaborate with everyone in your life.
Wunderlist then instantly syncs between your phone, tablet and computer, so you can access your to-do lists from anywhere.
Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
Search and Browse
Launch applications and find files on your Mac or on the web. Alfred learns how you use your Mac and prioritises results. Save countless hours by using hotkeys, keywords and customising how you want to search your Mac and activity history. Jump in and browse, preview files and take action on them without lifting your fingers off the keyboard.
Type Less, Say More
With Alfred's Clipboard History and Snippets features, there's no need to type the same URLs or responses over and over. Use the Clipboard History to locate any text, image or file you copied earlier and paste it again. Create your own snippets and type a short abbreviation to auto-expand them into a full text snippet, saving yourself hours of typing in the long run!
Extend and Automate
With Alfred's Powerpack, use immensely powerful workflows to perform tasks more efficiently and cut down on repetitive manual tasks. Link hotkeys, keywords and actions together to create your own workflows; There's no need to write a single line of code to create a workflow. Import workflows from the thousands our community of creators have shared.
Control Your Music
You're the boss. Boost your productivity by controlling your Mac using Alfred's deep integration with macOS. Swiftly take action on files and contacts, control your music player and dispatch System commands. Add some fun to your day; Turn your iPhone or iPad into a command centre for your Mac with Alfred Remote for iOS. Alternatively, take a look at the many workflows for other music services like Spotify.
Sublime Text is a sophisticated text editor for code, html and prose - any kind of text file. You'll love the slick user interface and extraordinary features.
Sublime Text may be downloaded and used for free without an expiration time limit, however a prompt appears occassionally to "ask to" purchase a license
Evernote is a cross-platform, freemium app designed for note taking, organizing, and archiving.
The app allows users to create a "note" which can be a piece of formatted text, a full webpage or webpage excerpt, a photograph, a voice memo, or a handwritten "ink" note.
Notes can also have file attachments. Notebooks can be added to a stack while notes can be sorted into a notebook, tagged, annotated, edited, given comments, searched, and exported as part of a notebook.
Evernote Premium features:
Offline notes Your notes are available anywhere, anytime, even without an internet connection. Perfect for flights, international travel and working on the go.
Passcode lock Make sure only you can access your notes. Add a layer of security on mobile devices to protect your valuable information such as business plans, receipts, health information, and photographs.
Business card scanning Leave behind your stack of cards by scanning them using Evernote's camera. Capture and store all contact information, a photo of the card and choose to automatically pull additional profile details from LinkedIn.
Presentation mode Present directly from your notes in a full-screen layout for more collaborative, efficient meetings.
PDF annotation When a picture’s worth a thousand words, you can avoid lengthy email dialogue. There’s no quicker way to call attention to contract edits or design changes.
Context and Knowledge Discovery Context reveals notes with related content and documents, and Knowledge Discovery identifies co-workers who are experts on the topic or project you're working on.
Faster image recognition Find what you’re looking for, faster. We scan your images faster, so text within them is searchable sooner. Find text in handwritten notes, Post-it® Notes, whiteboard drawings and more.
Search in PDFs and Office docs Your files are easily searchable within Evernote. Quickly locate your Office and work documents, spreadsheets, presentations, and PDFs.
Otter is a smart note-taking app that empowers you to remember, search, and share your voice conversations (for English only). Web version is also available at otter.ai
Otter creates smart voice notes that combine audio, transcription, speaker identification, inline photos, and key phrases. It helps business people, journalists, and students to be more focused, collaborative, and efficient in meetings, interviews, lectures, and wherever important conversations happen.
With Otter, you can: • Record live audio, or import existing recordings • View transcription in real-time; scroll back to revisit a point you missed • Snap photos (e.g. of a whiteboard, slide, presenter) while you record to add visual context to your conversations • Play back the recording with synchronized word highlighting and inline photos • Adjust the playback speed; great for skimming through a long recording, or reviewing parts that require a more careful listen • Search by keywords, or just tap on the suggested keywords, to jump directly to the "juicy" parts • Train Otter to identify speakers automatically by recording your voiceprint and tagging at least 15 seconds of each speaker's voice in your conversations • Edit the text to polish the transcript • Copy to clipboard or export text directly into other apps • Export audio as MP3 (at otter.ai website) • Share conversations via public links or invite-only groups • Create groups to invite collaborators to share and edit conversations • Organize your conversations into groups • Connect to iOS and Google calendars to receive reminder notifications to record, and title the conversations automatically • Import contacts from iOS and Google account to make it easier to invite collaborators to your Otter groups
Play YouTube video continuously with playlists.
- Easy search (auto-completion, search history)
- Local playlists
- Play in mini player while searching/browsing.
- supports YouTube account login
- supports YouTube HQ videos
- Supports remote controls & multitasking
- Display media info in lock screen
- Supports notification
Spotify is a freemium music streaming service providing digital rights management-restricted content from record labels including Sony, EMI, Warner Music Group and Universal.
Music can be browsed by artist, album, genre, playlist, or record label, as well as by direct searches. On computers, a link allows the listener to purchase selected material via partner retailers.
Spotify music streaming is available on all mobile devices and on desktop computers for unlimited durations. Features like offline listening and ad-free playback are only available for Premium subscribers of the service.
coconutBattery isnt just a tool which shows you only the current charge of your battery - it also shows you the current maximum capacity of it in relation to the original capacity your battery had as it left the factory. You also get information about the battery-loadcycles (how often did you fully load your battery), the current charger (coconutBattery even warns you if you plugged in a wrong charger for your Notebook) and last but not least information about the age of your Mac.
coconutBattery gives you all these information just in time because of its live-feedback interface!
Of course you are able to save the current maximum capacity of your battery - with just one click! coconutBattery uses Apples new and really powerful technology named "CoreData" to realize this comfortable saving option.
And last but not least: coconutBattery is Universal Binary (you can run it on Intel-Macs!)
AppCleaner is a small application which allows you to thoroughly uninstall unwanted apps.
Installing an application distributes many files throughout your System using space of your Hard Drive unnecessarily. AppCleaner finds all these small files and safely deletes them.
ImageOptim is excellent for publishing images on the web (easily shrinks images “Saved for Web” in Photoshop). It's useful for making Mac and iPhone/iPad applications smaller (if you configure Xcode to allow better optimization). ImageOptim removes EXIF metadata, such as GPS position and camera's serial number, so that you can publish images without exposing private information (but there's an option to keep the metadata if you need it).
Faster web pages and apps Reduces image file sizes?—?so they take up less disk space and download faster?—?by applying advanced compression that preserves quality.
Image files scrubbed clean Removes invisible junk: private EXIF metadata from digital cameras, embedded thumbnails, comments, and unnecessary color profiles.
Best tools with drag'n'drop Seamlessly combines all the best image optimization tools: MozJPEG, Pngcrush, pngquant, 7zip and Google Zopfli. All Free and
How does it work? When you drag'n'drop images into ImageOptim's window it will run several image optimization tools automatically and combine their results, ensuring that you always get the smallest file. ImageOptim integrates well with OS X, so you can also drop files on ImageOptim's Dock icon, or use Services menu in Finder, or Markup menu on attached images in Apple Mail. ImageOptim can also be launched from command line. A special option for even smaller files. If you enable Lossy minification you'll get smallest file sizes possible. By default ImageOptim is very cautious and exactly preserves image quality, but if you allow it to change the quality?—?even only a little?—?it will be free to use much more aggressive optimizations that give the biggest results. You can configure lossy optimizations in ImageOptim's Preferences. ImageOptim can apply lossy compression not only to JPEG, but anim GIF and PNG as well!
Open Source ImageOptim is free, open-source software under terms of the GPL v2 or later.