Linux
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.
Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.
It supports POP (storing mail locally on your hard drive so that it can be accessed without an internet connection), and IMAP. It features excellent mail filter capabilities and management.
Thunderbird has strong support for using multiple accounts and identities, including automated signature features.
Chat functionality is built in, so you can enjoy real-time conversation with your contacts, right from your favorite messaging application, with multiple supported networks. Thunderbird makes it easy to search through both past conversations and received emails.
Thunderbird can also function as an RSS/Atom feed reader, and has a large selection of add-ons that extend it with calendar support, PGP support, integration with online services and much more.
Available also as portable app: http://portableapps.com/apps/internet/thunderbird_portable
Thunderbird for Android is known as K-9 Mail
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.
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.
Eclipse is an extensible development platform with runtimes and application frameworks for building, deploying and managing software across the entire software lifecycle. Many people know Eclipse as a Java IDE, but it is much more than that- Eclipse actually consists of over 60 different open-source projects, organized into 6 different categories:
*. Enterprise Development *. Embedded and Device Development *. Rich Client Platform *. Rich Internet Applications *. Application Frameworks *. Application Lifecycle Management (ALM) *. Service Oriented Architecture (SOA)
Krita is a complete creative sketching and painting application with advanced, commercial quality features. It's open-source and available across all major desktop platforms. Krita is free on the official website and paid on Steam and Microsoft Store: the money will support Krita development.
User Interface - An intuitive user interface that stays out of your way. The dockers and panels can be moved and customized for your specific workflow. Once you have your setup, you can save it as your own workspace. You can also create your own shortcuts for commonly used tools.
Pop-up Palette - Quickly pick your color and brush by right-clicking on the canvas.
Brush Stabilizers - Have a shaky hand? Add a stabilizer to your brush to smoothen it out.
Brush Engines - Customize your brushes with 9 unique brush engines.
Wrap-around mode - It is easy to create seamless textures and patterns now. Press the ‘W’ key while painting to toggle wrap-around mode.
Resource Manager - Import brush and texture packs from other artists to expand your tool set.
Layer Management - Krita comes with vector, filter, group, and file layers. Combine, order, and flatten layers to keep organized. Add drop shadows and other simple effects using visual styles.
Full Color Management - Krita supports full color management through LCMS for ICC and OpenColor IO for EXR, allowing you to incorporate Krita into your existing color management pipeline.
Geany is a powerful, stable and lightweight programmer's text editor that provides tons of useful features without bogging down your workflow. It runs on Linux, Windows and macOS is translated into over 40 languages, and has built-in support for more than 50 programming languages.
Fast & Small
One the primary reasons for Geany's existence is that there is a need for a decent, GUI, lightweight, cross-platform, flexible and powerful IDE/editor. Many editors meet one or more of these requirements but fall short on others.
Geany attempts to hit the sweet spot.
Great Community
Geany is Good Ol' Fashioned Free Software. Using the GPL v2 license, Geany assures that not only can you customize and hack it, but that everyone benefits from changes the community makes. Geany has a vibrant community of professionals and hobbyists alike that contribute improvements and fixes across numerous platforms including The Mailing Lists, Github, Matrix #geany:matrix.org, Mastodon and Twitter.
Easily Customizable
Many parts of Geany are heavily customizable like color themes (Geany Themes) or adding new filetypes. Furthermore, Geany provides many settings to let you adjust it to your needs and preferences.
Many Filetypes
Many supported filetypes including popular programming languages like C, Java, PHP, HTML, JavaScript, Python or Perl. But Geany also includes support for other useful filetypes like ini-style config files, Diff output, SQL files and many more.
Many Plugins
With Geany's plugin system, users can get more features into Geany and developers can easily add new features and/or improve existing ones.
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.
LMMS is a free cross-platform alternative to commercial programs like FL Studio , which allow you to produce music with your computer. This includes the creation of melodies and beats, the synthesis and mixing of sounds, and arranging of samples. You can have fun with your MIDI-keyboard and much more; all in a user-friendly and modern interface.
Zim brings the concept of a wiki to your desktop. Store information, link pages and edit with WYSISYG markup or directly typing some lightweight markup syntax and see it previewed as-you-type. Creating a new page is easy by either clicking on the "Create new note" button, by linking to a non-existing page or by writing a CamelCase name in any note. Pages are stored in a folder structure, like in an outliner, in plain text format with lightweight markup, and can have attachments (stored along the notes).
This tool can be used to keep track of TODO lists or ideas, to take notes during a meeting, to draft any other kind of text (blog entries, important mails, etc.) or to write long texts like lab research notebooks thank's to the headers structure and the table of content navigation.
Zim handles several types of formatting markup, like headings, bullet lists, checkbox, tables and of course bold, italic and highlighted. This markup is saved as a hybrid wiki/markdown text so you can easily edit it with other editors. Because of the autosave feature you can switch between pages and follow links or even close the software anytime while editing without worries. The interface also provides multi-document tabs, and it remembers the cursor position in all notes for quick resuming in your note taking endeavors.
Picard is the next generation MusicBrainz tagging application. This new tagging concept is album oriented, as opposed to track/file oriented like the ClassicTagger was. Picard is written in Python, which is a cross-platform language, and makes use of cross-platform libraries - this allows the same code to run both on Windows, Linux and Mac OS X.
A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.
- Rich text
- Syntax highlighting
- Images handling
- Embedded files handling
- Multi-level lists handling
- Simple tables handling
- Codeboxes handling
- Execution of the code for code nodes and codeboxes
- Alignment of text, images, tables and codeboxes
- Hyperlinks associated to text and images
- Spell check
- Intra application copy/paste
- Cross application copy/paste
- Copying a list of files from the file manager and pasting in cherrytree will create a list of links to files, images are recognized and inserted in the text
- Print & save as pdf file of a selection / node / node and subnodes / the whole tree
- Export to html of a selection / node / node and subnodes / the whole tree
- Export to plain text of a selection / node / node and subnodes / the whole tree
- TOC generation for a node / node and subnodes / the whole tree, based on headers h1, h2 and h3
- Find a node, find in selected node, find in selected node and subnodes, find in all nodes
- Replace in nodes names, replace in selected node, replace in selected node and subnodes, replace in all nodes
- Iteration of the latest find, iteration of the latest replace, iteration of the latest applied text formatting
- Import from html file, import from folder of html files
- Import from plain text file, import from folder of plain text files
- Import from basket, cherrytree, epim html, gnote, keepnote, keynote, knowit, mempad, notecase, rednotebook, tomboy, treepad lite, tuxcards, zim
- Export to cherrytree file of a selection / node / node and subnodes / the whole tree
- Password protection
- Tree nodes drag and drop
- Automatic link to web page if writing the URL
- Automatic link to node if writing node name either with no spaces and camelcase or surrounded by [[node name]]
GCstar is a free open source application for managing your collections. Detailed information on each item can be automatically retrieved from the internet and you can store additional data, such as the location or who you've lent it to. You may also search and filter your collection by many criteria.
The tool was developed by Tian until March 2016, when he announced not to work on it anymore, also the site GNA.org used to publish GCstar releases was closed in May 2017. The project has been continued by Kerenoc who set up a GitLab repository to track the latest contributions and make the source code available again.
GCstar manages these collections:
- Movies
- Video games
- Books
- Music
- Numismatic
- Wines
- Board games
- Comic books
- TV shows episodes
- Stamps
- Periodicals
- Mini vehicles
- Smart cards
- TV shows (series)
- Computer software
- User defined collections
Freeplane is a powerful and free software for building mind maps. It is a redesigned version of the well known FreeMind , and is created by one of FreeMind's key developers. The software is written in Java, and supports any platform capable of running current versions of Java.
Meld is a visual diff and merge tool. You can compare two or three files and edit them in place (diffs update dynamically). You can compare two or three folders and launch file comparisons. You can browse and view a working copy from popular version control systems such such as CVS, Subversion, Bazaar-ng and Mercurial. Written with Python and GTK.
Requirements: Python 2.6 GTK+/pygtk 2.14 GLib/pygobject 2.16 GtkSourceView/pygtksourceview 2.10 (optional)
Note: There are ports to Mac but the app doesn't "officially" run on Mac.
Scribus is a desktop publishing (DTP) application. Scribus is designed for flexible layout and typesetting, and the ability to prepare files for professional quality image setting equipment. It can also create animated and interactive PDF presentations and forms. Example uses include writing small newspapers, brochures, newsletters, posters and books.
htop is an interactive process viewer for Linux. It is a text-mode application (for console or X terminals) and requires ncurses. htop is an interactive top replacement that runs in the terminal. The available columns are: PID, STATE, PPID, PGRP, SESSION, TTY_NR, TPGID, MINFLT, CMINFLT, MAJFLT, CMAJFLT, UTIME, STIME, CUTIME, CSTIME, PRIORITY, NICE, STARTTIME, PROCESSOR, M_SIZE, M_RESIDENT, M_SHARE, M_TRS, M_DRS, M_LRS, M_DT, ST_UID, PERCENT_CPU, PERCENT_MEM, USER, TIME, NLWP, TGID, CTID, VPID, VXID, RCHAR, WCHAR, SYSCR, SYSCW, RBYTES, WBYTES, CNCLWB, IO_READ_RATE, IO_WRITE_RATE, IO_RATE, CGROUP, OOM, IO_PRIORITY
Comparison between htop and top
- In 'htop' you can scroll the list vertically and horizontally to see all processes and complete command lines.
- In 'top' you are subject to a delay for each unassigned key you press (especially annoying when multi-key escape sequences are triggered by accident).
- 'htop' starts faster ('top' seems to collect data for a while before displaying anything).
- In 'htop' you don't need to type the process number to kill a process, in 'top' you do.
- In 'htop' you don't need to type the process number or the priority value to renice a process, in 'top' you do.
- 'htop' supports mouse operation, 'top' doesn't
- 'top' is older, hence, more used and tested.
Baobab Disk Usage Analyzer is a graphical application to analyse disk usage in any Gnome environment. Disk Usage Analyzer can easily scan device volumes or a specific user-requested directory branch (local or remote). Once the scan is complete Disk Usage Analyzer provides a graphical representation of each selected folder.
It can report disk usage for root (/). It can report disk usage for current working directory (.).
