Based software

Bromite is a Chromium fork with support for ad blocking and enhanced privacy.

Privacy-focused browser with over 500 settings for enhanced security and performance, independent of Firefox, and not affiliated with Mozilla.

An actively developed, keyboard-focused browser with a minimal GUI, inspired by other browsers/addons like dwb and Vimperator/Pentadactyl. It’s based on Python, PyQt5 and QtWebKit and free software, licensed under the GPL.

Anki is a program that makes remembering things easy. Because it is a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying or greatly increase the amount you learn.

SpeedCrunch is a free, fast, high precision open source algebraic calculator with an intuitive interface and many features, such as variables, syntax highlighting, functions, persistent input history & more.

WinAuth is a portable, open-source Authenticator for Windows that can be used as a 2FA including Bitcoin / crypto-currency websites, any service that requires the Google Authenticator, and games such as World of Warcraft, Diablo III, Guild Wars 2, Rift, ArcheAge.

Audio player and music organizer supporting advanced playback, wide format compatibility, streaming from Tidal, Qobuz, Subsonic, and album cover fetching.

Libgen Desktop is a Windows application for browsing a local copy of LibGen catalog. The main (non-fiction), fiction and scientific articles (scimag) LibGen collections are supported.

Open source, free graphical interface for to-do lists done using the todo.txt approach.