Join over 300 million learners on Duolingo, the most popular way to learn languages! It’s free, fun and effective. The secret? Duolingo feels like a game and makes sure you stay motivated.
Over 30 languages to choose from - all completely free!
• "Far and away the best language-learning app." — The Wall Street Journal
• "A single app for language skills, self-improvement and digital escape." - The New York Times
• "Duolingo may hold the secret to the future of education." — TIME Magazine
• "...Duolingo is cheerful, lighthearted and fun..." - Forbes
Duolingo is changing the way people learn languages using advanced technology to personalize every lesson for you. Practice reading, writing, speaking, listening and conversation with intelligent Chatbots. Track your progress, earn rewards, and join the world’s largest community of language learners.
We offer: Spanish, French, German, Italian, Chinese, Japanese, Korean, Portuguese, Russian, Irish, Dutch, Danish, Swedish, Turkish, Norwegian, Polish, Hebrew, Esperanto, Vietnamese, Ukrainian, Welsh, Greek, Hungarian, Romanian, and Swahili. Oh, and English too.
While all learning content in Duolingo is free, we do offer Duolingo Plus which removes ads and provides other helpful features. If you choose to purchase Duolingo Plus, payment will be charged to your iTunes account, and your account will be charged for renewal within 24-hours prior to the end of the current period. Auto-renewal may be turned off at any time by going to your settings in the iTunes Store after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable.
If you don’t choose to purchase Duolingo Plus, you can simply continue using Duolingo for free. Current Duolingo Plus subscription price starts at $9.99 USD/month.
The software’s particular strength lies in the three-dimensional general arrangement and reinforcement design. With this, the building construction is carried out in advance, so that discrepancies and conflicts are already visible in the planning phase. All the common interfaces are available to ensure smooth collaboration with planning partners. In conjunction with FRILO Structural Analysis or SCIA Engineer, you have an integrated solution for structural design. During the development of Allplan Engineering version 2017, the focus was on collaboration, automation and 3D modeling.
JOSM is an extensible editor for OpenStreetMap (OSM), written in Java.
It supports loading GPX tracks, background imagery and OSM data from local sources as well as from online sources and allows to edit the OSM data (nodes, ways, and relations) and their metadata tags.
JOSM is open source and licensed under GPL.
An Android app which finds wrong, incomplete or extendable data in the user's vicinity and provides the tools to complete these easily and directly on site without having to use another editor.
The found issues are presented to the user as markers on a map (like i.e. in Mapdust) that each are solvable by filling out a simple form to complete/correct the information on site. The user's answer is then processed and directly uploaded into the OSM database in atomic commits in the name of the user's OSM account. Since the app is meant to be used on a survey, it can be used offline and otherwise aims to be economic with data usage.
The app is aimed at users who do not know anything about OSM tagging schemes but still want to contribute to the OpenStreetMap by surveying their neighbourhood (or other places as well). Because of the target group, only those quests are shown which are answerable very clearly by asking one simple question and only those quests are created which contain very few false positives.
RapiD is a modified version of the popular OSM editing tool, iD editor, developed by Facebook as a way to add and edit map features generated by AI predictions. RapiD was initially designed as a tool to add roads, and has subsequently been used to add buildings as well. RapiD includes validation checks (in addition to checks within iD) to detect potential errors. RapiD suggests features, allowing the mapper to decide which features to add to the map. Suggested features are displayed with a magenta color to differentiate them from other map features. A mapper can select a suggested feature, then click “Use This Feature” to add it to the map. From there, it is like any other newly-digitized feature: the geometry and tags can be modified and then uploaded to OSM. Only features that are accepted by a mapper are uploaded to OSM.
LinkedIn is a business-oriented social networking service, mainly used for professional networking. As of March 2016, LinkedIn has more than 433 million users, out of which more than 106 million are active, spanning more than 200 countries and territories worldwide.
The LinkedIn app makes it easier to connect to the people and things that matter in your professional world. Build and nurture your professional network, stay up to date with the latest business and industry news, and find your next dream job.
It all starts with your LinkedIn profile. It’s more than just your professional resume — it shows the world who you are and what you’ve accomplished in your career. But that’s just the beginning:
- Search for people, jobs, companies and groups
- Get updates from the people, publishers and companies that matter to your professional success
- Tell your story with your professional profile and build your professional brand
- Update your professional profile right from the app to polish your resume wherever you are
- Grow your professional network and keep in touch
- Reach out to people and view their professional profiles
- Share articles to establish yourself as a thought leader
- Follow companies to get job postings, business updates, and suggestions to connect with people you may know
SourceForge is an Open Source software community resource dedicated to helping open source projects be as successful as possible. We thrive on community collaboration to help us create a premiere resource for open source software development and distribution.
With the tools we provide, developers on SourceForge create powerful software in over 502,000 projects; we host millions of registered users. Our popular directory connects more than 32 million monthly users with all of these open source projects and serves more than 2.6 million downloads a day. Our business software directory lists over 50,000 software titles.
IT professionals come to SourceForge to develop, download, review, and publish open source and business software. SourceForge is the largest, most trusted destination for Open Source Software discovery, software reviews, and software development on the web.
SourceForgeacts as a centralized location for software developers to control and manage open source software development. Features include support for CVS, SVN, Bazaar, Git or Mercurial repositories, project wikis, metrics and analysis, access to a MySQL database, and unique sub-domain URLs.
Sci-Hub is a non-profit and ad-free shadow library website that provides free and open access to over 85.4 million scientific articles and research papers, bypassing publishers' paywalls and restrictions through various means.
Autodesk Homestyler is a tool that enables you to quickly produce a 2D or 3D model of a building and its furniture. It focuses on 2D and 3D architectural design. It has drag and drop "blocks" of furniture, windows, doors, wall types, floor types, appliances, electronic equipment, and, well much more.
Sweet Home 3D is a free interior design Java application that helps you draw the plan of your house, arrange furniture on it and visit the results in 3D.
Khan Academy is not-for-profit with the goal of changing education for the better by providing a free world-class education to anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get a leg up in earthly biology. The Khan Academy's materials and resources are available to you completely free of charge.
OpenStreetMap is a project aimed squarely at creating and providing free geographic data such as street maps to anyone who wants them. It is a free editable map of the whole world. It is made by people like you. It allows you to view, edit and use geographical data in a collaborative way from anywhere on Earth.
Over 600 apps work with IFTTT including Twitter, Telegram, Google Drive, Twitch, Weather Underground, Instagram, Gmail, and devices like Google Home, Amazon Alexa, Nest, Philips Hue, and your iPhone. The IFTTT app also integrates with the Health app, so you can easily track and maintain your habits.
Turn on Applets and: • Control everything around you with your voice and Amazon Alexa or Google Assistant • Stay informed about what’s happening from publications like The New York Times and ProPublica • Always stay prepared for the weather with custom daily forecast notifications • Message roommates when you’re near the local grocery • Get an alert as soon as there’s a new Craigslist listing that matches you search • Stay safe with automated and intelligent home security alerts • Streamline your social media • Back up and share your iOS photos automatically • Back up important files, photos, and contacts to cloud-storage solutions, such as Dropbox or Google Drive • Set your home thermostat to an optimal temperature when you arrive home • Post all your Instagrams as Twitter photos or Pinterest pins • Trigger events based on your current location
There are thousands of other use cases! New services are added every week. Some popular ones include: Twitch, Telegram, Spotify, YouTube, Google Calendar, Tumblr, Medium, Pocket, Square, eBay, Giphy, Automatic, LIFX, Fitbit, Withings, littleBits, Google WiFi, Evernote, Reddit, Digg, Skype, Slack, LINE, MailChimp, Salesforce, Todoist, and hundreds more.
Browse our curated collections to find Applets for: • The home, office, and car • Staying informed on news and politics • Your iPhone and iPad • Exploring outer space • Improving how you use social media
Do more with the services you love. Discover the power of Applets at ifttt.com/discover
GitHub is a web-based hosting service for projects that use the Git revision control system. It is written in Ruby on Rails by Logical Awesome developers Chris Wanstrath, PJ Hyett, and Tom Preston-Werner. GitHub offers both commercial plans and free accounts for open source projects.
The site provides social networking functionality like feeds, followers and the network graph to display how developers work on their versions of a repository.
GitHub also operates a pastebin-style site at gist.github.com, wikis for the individual repositories and web pages that can be edited through a git repository.
GitHub has a built-in, highly functional Issue Tracker.
diagrams.net (previously draw.io) is a free online diagram drawing application for workflow, BPM, org charts, UML, ER, network diagrams. No login or registration are required and features include the ability to save locally (including SVG), a range of stencils, .vsdx, Lucidchart and Gliffy import and real time diagram sharing.
PortableApps.com is a website offering many free, commonly used Windows applications that have been specially packaged for portability. These portable applications can be used from removable media such as USB flash drives. User data is stored in a subfolder, allowing the user to upgrade or move the software without affecting the data. To remove the software, a user can simply delete the main folder.
The PortableApps.com Launcher (also known as PAL) is used to make applications portable by handling path redirection, environment variable changes, file and directory movement, configuration file path updates and similar changes, as configured. The PortableApps.com Launcher allows software to be made portable without the need to write custom code or make changes to the base application. While some of the software packages released on PortableApps.com currently still contain their own custom launchers, the PortableApps.com Launcher is used in all new apps released.
Whether you’re part of a school club, a gaming group, a worldwide art community, or just a handful of friends that want to spend time together, Discord makes it easy to talk every day and hang out more often. Create an invite-only place.
• Discord servers are organized into topic-based channels where you can collaborate, share, and just talk about your day without clogging up a group chat.
• Voice channels make hanging out easy. Grab a seat in a voice channel when you’re free. Friends can see you’re around and pop in to talk, without having to call.
• Reliable tech for staying close. Low latency voice and video feels like you’re in the same room. STAY CLOSE WITH TEXT, VOICE, AND VIDEO
• Wave hello over video, watch friends stream their games, or gather up and have a drawing session with screen share.
• Turn any image into your own custom emojis and share them with friends.
• Share anything from a funny video to your latest group photos, and pin your favorites to remember later.
FOR A FEW OR A FANDOM
• Custom moderation tools and permission levels can group up your friends, organize your local book club, or bring together music fans from around the world.
• Create moderators, give special members access to private channels, and much more.
Audacity is free, open source software for recording and editing sounds. You can use Audacity to record live audio, convert tapes and records, edit sound files, change the speed or pitch of a recording and much more.
JDownloader is a free, open source download manager. It simplifies and improves the process of downloading files from Websites, Cloud-Storage Providers, Social Media Networks and File Hosting Sites.
JDownloader offers downloading in multiple parallel streams, throttling, resuming, CAPTCHA recognition, and automatic file extraction. It supports Click'n'Load and container files like DLC, RSDF and CCF. A large developer community ensures that current individual page-specific download scripts are kept up to date and valuable time is saved on the basis of the expandable basic framework.
It can also be used as a service on a server or Network Attached Storage (NAS) and controlled via My.JDownloader.Org from a web browser or smartphone.
Organize anything, together. Trello is a collaboration tool that organizes your projects into boards. In one glance, know what's being worked on, who's working on what, and where something is in a process.
BleachBit deletes unnecessary files to free valuable disk space, maintain privacy, and remove junk.
Rid your system of old clutter including cache, cookies, Internet history, localizations, logs, temporary files, and broken shortcuts.
Designed for Linux and Windows systems, it wipes clean Adobe Acrobat Reader, APT, Bash, Beagle, Chromium, Epiphany, Mozilla Firefox, Flash, GIMP, Google Chrome, Google Earth, Internet Explorer, Java, KDE, OpenOffice.org, Opera, RealPlayer, Safari, Second Life viewer, Skype, VIM, XChat, Yum, and more.
BleachBit has never bundled any junk like browser toolbars.
Blender is the free open source 3D content creation suite, available for all major operating systems under the GNU General Public License.
It can be used for modeling, UV unwrapping, texturing, rigging, water simulations, skinning, animating, rendering, particle and other simulations, non-linear editing, compositing, and creating interactive 3D applications, rigid body, fluid, cloth and softbody dynamics, modifier based modeling tools, powerful character animation tools, a node based material and compositing system and Python for embedded scripting.
Blender is Free Software. Free to use for any purpose. Forever.
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!
Using Signal, you can communicate instantly with your relatives without making a compromise on privacy or security. Make video calls, send messages, pictures, videos, documents, voice recordings, GIFs, contacts & location, create groups so that you can chat in real time with all your friends at once and react to their messages with emojis -all with complete privacy-. Signal servers never have access to any of your communications and never store any of your data.
- Say Anything - Share text, voice messages, photos, videos, GIFs and files for free. Signal uses your phone's data connection so you can avoid SMS (No longer supports SMS or MMS) and MMS fees.
- Speak Freely - Make crystal-clear voice and video calls to people who live across town, or across the ocean, with no long-distance charges.
- Make Privacy Stick - Add a new layer of expression to your conversations with encrypted stickers. You can also create and share your own sticker packs.
- Get Together with Groups - Group chats make it easy to stay connected to your family, friends, and coworkers.
- No ads. No trackers. No kidding. - There are no ads, no affiliate marketers, and no creepy tracking in Signal. So focus on sharing the moments that matter with the people who matter to you.
- Remain Connected - Push notifications let you know when new messages have arrived, and they'll be waiting for you even if your battery dies or you temporarily lose service.
- View Source - All of our code is free, open, and available on GitHub (https://github.com/signalapp).
- Join Movements - Technology developed by Open Whisper Systems is trusted and used by millions of people around the world every day.
Zoom is a video communication company that provides remote conferencing services that combines video conferencing, online meetings, chat, and mobile collaboration.
Zoom offers a way to start or join a 100-person meeting face-to-face video, screen sharing and instant messaging
Key Features: --Best video meeting quality --Best screen sharing quality --Screen share directly from your device --Screen share photos, web, and Dropbox or Box files --Screen share apps via iOS AirPlay --Co-annotate during screen sharing --Real-time whiteboard collaboration --Send group text, images, and audio files from mobile and desktop --Contact availability status --Easily invite phone, email, or company contacts --Join as interactive participant or view-only webinar attendee --Works over WiFi, 4G/LTE, and 3G networks --Safe driving mode while on the road --Connect with anyone on iPad, iPhone, other mobile devices, Windows, Mac, Zoom Rooms, H.323/SIP room systems, and telephones
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.
OBS Studio (also known as Open Broadcaster Software, or OBS) is a screen-casting and live-streaming software available across multiple platforms including macOS, Windows and Linux. Boasting features typically only found in commercial screen recording apps, OBS also provides one of the simplest workflows with an intuitive and easy-to-learn interface that makes recording and streaming a breeze. It's also totally free and open-source.
With its long standing history of continued updates and considering its ease of use and free cost, it's no wonder OBS is one of the most popular and highest recommended apps for screen-casting and live streaming.
Cross-platform (available for Mac, Windows and Linux). Encoding using H264 (x264) and AAC. Support for Intel Quick Sync Video (QSV), AMF and NVENC. Unlimited number of scenes and sources. Live RTMP streaming to Twitch, YouTube, Mixer, DailyMotion, Smashcast and more. File output to MP4, MKV or FLV. GPU-based game capture for high performance game streaming. DirectShow capture device support (webcams, capture cards, etc). Windows 8 high speed monitor capture support. Bilinear or lanczos3 resampling. Light and dark themes to support various working conditions and preferences.
Foxit Reader is a free and light-weight multi-platform PDF document viewer. Its core function is compatible with PDF Standard 1.7.
Whether you're a consumer, business, government agency, or educational organization, you need to read, create, sign, and annotate (comment on) PDF documents and fill out PDF forms. Foxit Reader is a small, lightning fast, and feature rich PDF viewer which allows you to open, view, sign, and print any PDF file. Foxit Reader is the only high volume PDF reader providing a complete PDF creation solution, providing the power of PDF creation to every desktop. Foxit Reader comes equipped with comprehensive protection against security vulnerabilities, keeping your system and company safe.
VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVDs, Audio CDs, VCDs, and various streaming protocols.
Simple, fast and powerful media player. Plays everything: Files, Discs, Webcams, Devices and Streams.
Plays most codecs with no codec packs needed: MPEG-2, DivX, H.264, MKV, WebM, WMV, MP3...
WordPress is software designed for everyone, emphasizing accessibility, performance, security, and ease of use. We believe great software should work with minimum set up, so you can focus on sharing your story, product, or services freely. The basic WordPress software is simple and predictable so you can easily get started. It also offers powerful features for growth and success.
We believe in democratizing publishing and the freedoms that come with open source. Supporting this idea is a large community of people collaborating on and contributing to this project. The WordPress community is welcoming and inclusive. Our contributors’ passion drives the success of WordPress which, in turn, helps you reach your goals.
Ninite is the easiest way to install software. Pick the apps you want, and the Ninite installer will download and install all of your selected apps at once, automatically. It is 100% hands-free; Ninite automatically rejects browser toolbars and other prepackaged junk.
International: Ninite installs apps in your PCs language.
32 or 64-bit: Ninite installs the best version of an app for your PC.
WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat .
You can also examine Network Drives very fast.
Language for application AND help files can be set to Czech, Dutch, Estonian, Finnish, German, English, Spanish, French, Hungarian, Italian, Polish and Russian.
FreeMind is a premier free mind-mapping software written in Java. The recent development has hopefully turned it into high productivity tool. We are proud that the operation and navigation of FreeMind is faster than that of MindManager because of one-click "fold / unfold" and "follow link" operations.
Google Docs is an online word processor, part of Google Drive, that lets you create and format text documents and collaborate with other people in real time. Here's what you can do with Google Docs:
• Upload a Word document and convert it to a Google document. • Add flair and formatting to your documents by adjusting margins, spacing, fonts, and colors — all that fun stuff. • Invite other people to collaborate on a document with you, giving them edit, comment or view access. • Collaborate online in real time and chat with other collaborators — right from inside the document. • View your document's revision history and roll back to any previous version. • Download a Google document to your desktop as a Word, OpenOffice, RTF, PDF, HTML or zip file. • Translate a document to a different language. • Email your documents to other people as attachments.
With Google Calendar, its easy to keep track of all your lifes important events in one place. You can add events and send invitations effortlessly, share your schedule with friends and family, and search for events you might enjoy.
A free web browser developed by Google from the open source Chromium project with a focus on speed and minimalism. Chrome offers fast start-up and web page loading, supports a minimalist user interface, automatically updates in the background, and offers syncing of browser bookmarks, extensions, passwords, and history between multiple computers by your Google account.
Additionally, Chrome has PDF support built into the browser for better speed and security.
Chrome Web Apps and Extensions are available on Chrome Web Store .
Available in more than 50 languages.
Find best open source products across all platforms.
Inkscape is an Open Source vector graphics editor, with capabilities similar to Illustrator, CorelDraw, or Xara X, using the W3C standard Scalable Vector Graphics (SVG) file format.
It supports many advanced SVG features (markers, clones, alpha blending, etc.) and great care is taken in designing a streamlined interface. It is very easy to edit nodes, perform complex path operations, trace bitmaps and much more. We also aim to maintain a thriving user and developer community by using open, community-oriented development.
7-Zip is a file archiver with a high compression ratio.
The main features of 7-Zip
High compression ratio in 7z format with LZMA and LZMA2 compression Supported formats: Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR and Z. For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip Strong AES-256 encryption in 7z and ZIP formats Self-extracting capability for 7z format Integration with Windows Shell Powerful File Manager Powerful command line version Plugin for FAR Manager Localizations for 87 languages
7-Zip works in Windows 10 / 8 / 7 / Vista / XP / 2012 / 2008 / 2003 / 2000 / NT. There is a port of the command line version to Linux/Unix and macOS.
GIMP is a freely distributed program for such tasks as photo retouching, image composition and image authoring. It can be used as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, an image format converter, and more.
Software development tool designed for computer users to give them the ability to create any software they need without previous knowledge of computer programming where the user will start to learn how to program and will understand the programming concepts using this tool step by step and without the need to write code by hand at all where the programming done through general purpose visual programming languages.
Unlike other visual programming languages, PWCT is not limited and target also professional and mainstream programmers by giving them more productivity than traditional text-based programming languages.