Free & Open Source Software
Ardour – Production system for audio professionals.
Atom – A hackable text editor for the 21st Century.
Audacity – Audio editor and multi-track recorder for most basic tasks.
Blender – 3d graphic design and video editor.
Etcher – Burn images to SD cards & USB drives.
F-Droid – Catalog of free and open source applications for the Android operating system.
Filezilla – File transfer program. Great for exchanging files on web servers.
Firefox – Web browser respecting your privacy. Keep the web free! Excellent add-ons.
GIMP – Image editing software for all operating systems.
Google Alternatives – Privacy-friendly alternatives to Google that don’t track you.
Inkscape – Vector graphics design for all platforms.
Kdenlive – Video editing, visual effects, transitions, and rendering.
KeePassXC – Cross-platform password, login, and SSH key manager.
Krita – Graphic design and image editing.
LibreOffice – Word processing, spreadsheets, presentations, vector graphics, databases, and formulas.
MakeHuman – Open source avatar design.
Mixxx – Musical DJ playback supporting live track blending and multiple effects.
Ninite – Automated free application installer for Windows.
OpenProject – Open source project management software.
PeaZip – Archive utility for Windows and Linux.
projectM – Graphical visualizations responsive to audio playback.
Riot – Group communications built upon Matrix.
Thunderbird – Email client offering message filtering and junk controls.
Unarchiver – Archive utility for Mac.
VLC – Video and audio player for any operating system.
Operating Systems
Antergos – Linux distribution based on Arch which is easier to install and use.
Arch Linux – Build your own operating system! Comprehensive documentation.
Ubuntu Mate – User-friendly Linux option. Powerful live rescue boot environment.
Speech Recognition
DeepSpeech – Speech-To-Text engine from Mozilla that uses machine learning trained with Tensorflow.
PocketSphinx – Lightweight CMU Sphinx recognition engine under active development.
CMU Sphinx – Series of established open source voice recognition systems.
Kaldi – Extensible speech recognition toolkit written in C++.
Command Engines
Kayleevc – Recently updated spoken command recognizer based on Blather.
Blather – Earlier speech recognizer that will run set commands with spoken presets.
Lucida – Open web-based framework for interactive text search and image matching.
Robotics
Gazebo – Free robotics simulation software. Available for Arch Linux and Ubuntu.
Robot Operating System – Open framework for creating robotic software using Linux.
Voice Synthesis
Festival – Mature open source speech synthesis system.
Festvox – Tools for building new voices for use with Festival.
eSpeak NG – Text-to-Speech synthesizer that supports 101 languages and accents.
Thoughts?
Would you like to add a link to this list?