Lightweight and snappy.
Manages ebooks. I like ebooks, shoot me!
General purpose office suite for word processing, spreadsheets, etc.
A document viewer that saves screen space.
Hand note-taking software. Useful for annotating PDF files.
Tiny, simple, maintained, plaintext, bottom posting; it has all you need! It works with different email providers and focuses on email. That means that it is lacking a true calendar function and importing and syncing contacts is not always straightforward. You will get over this once you have things looking and working the way you like.
Remember to use plaint text
P2P file synchronization between devices on a local network, or between remote devices over the Internet. I use it just for notes and photos but it can do lots more. This has replaced Dropbox and Google Drive for me.
Keyboard-focused browser with a minimal GUI.
GUI Browser; needs no introduction.
A text web browser that I like.
Free and Open Source (FOSS) alternative to the official Soulseek client.
Images and Graphics
Powerful yet simple to use screenshot software.
Sometimes I need to make a pretty graphic to wow my students.
Audio and Video
This is just the most straightforward way to record audio. It works and it works well.
If I am going to watch a video on my computer, whether local or via YouTube, I use mpv. It does audio as well and there are plugins and extensions that allow for different functions.
cmus A small, fast and powerful console music player. I use this over other options (like mpd) because it is so damn easy!
Command Line Tools
Turns ASCII art into diagrams.
A universal document converter. I use this to make 95% of my documents for work.
Commend-line grammar checker
A script that extracts annotations from a PDF file.
PDFtk A very simple tool that can do lots of things with PDF files. This is a necessity for my job and it has saved me and made me the hero of my department on many occasions.
scrcpy An application that provides display and control of Android devices connected on USB (or over TCP/IP).
Universal Android Debloater by w1nstOn
Bash script using ADB to debloat rooted and non-rooted android devices. Improve your privacy, the security and battery life of your device.
The (in)famous open-source download manager for video and audio content from video hosting websites.
A script that helps you find Youtube videos (without API) and opens/downloads them using mpv/youtube-dl