Open Source Software for Linux
Jami
Jami is a free, open-source. universal distributed communication platform which preserves the user's privacy and freedoms. Jami supports a variety of video input options, including mutliple cameras and image and video files, and the selection of audio inputs and outputs with high quality audio and video codecs.
Pidgin
Pidgin is a chat application which lets you log into accounts on multiple chat networks simultaneously. Pidgin is developed and released fully free and open-source and provides a plugin architecture that allow anyone to build extensions and connections to new networks and third-party services.
CodeLite
CodeLite is a free and open source, cross-platform code editor. With CodeLite you can write C, C++, PHP, and JavaScript applications. CodeLite is used mainly bybackend developers using Node.js.
Eclipse
Eclipse IDE is a leading open platform for professional developers. With the Eclipse IDE you can write applications in your favorite programming language with confidence.
PyCharm
PyCharm is an integrated development environment (IDE) designed and developed by JetBrains specifically for the programming language Python. With PyCharm you can boost code quality and write maintainable code while maintain standards with PEP8 checks, testing assistance and smart refactoring. PyCharm also provides thorough intellisense with smart code completion, code inspection and real-time error highlighting. PyCharm is released as a commercial software but can be obtained for free as PyCharm Community Edition with a minimal limited feature set that close resembles the commercial version.
Mumble
Mumble is a free and open-source voice over IP application primarily designed for gamers. The application features a customizable in game overlay, application skins, conversation recording, and advanced voice activity detection. Anyone can download and use Mumble for free, but if you want your own server, you can rent a managed solution from the company behind Mumble, or host your own.
Blender
Blender is a free and open-source 3D model software released under the GNU General Public License. The software can be used for 3D modeling, 3D animation, UV unwrapping, texturing, rigging, skinning, rendering, particle generation, water simulation and much more.
Turtl
Turtl is a note taking application that uses high-end cryptography to protect your data. Whether you're worried about information leaks, competitive advantage, or blanket government surveillance, Turtl works hard to make sure only you, and those you choose, can see your data.
OpenSCAD
A free 3D CAD software developed for macOS, Linux and Windows. With OpenSCAD you can create solid 3D CAD objects through a script-only based modeller that uses its own description language. All objects in OpenSCAD can be viewed and inspected but not interactively selected or modified with gestures or mouse. Everything in OpenSCAD is based on scripts, a feature that some love. The software is openly developed and released under the GNU General Public License.