Cross-Platform Software

Web Browsers

Firefox Windows Linux macOS Android

Chromium Windows Linux macOS Android

Tor Browser Windows Linux macOS Android

Pale Moon Windows Linux

E-Mail Clients

Thunderbird Windows Linux macOS

Sylpheed Lightweight email client Linux Windows macOS

Office

LibreOffice Open Source office suite Linux Windows macOS

Database

SQLiteStudio SQLite database manager Linux Windows macOS

Organizers

Rainlendar Calendar application Windows Linux macOS

TaskUnifier Task management application based on the GTD methodology Windows Linux macOS

File Managers

Total Commander File manager Windows Android

Double Commander Open source file manager Linux Windows macOS

Text Editors/Tools

Geany Text editor with basic IDE features Linux Windows macOS

Vim Highly configurable text editor Linux Windows macOS

Meld diff and merge tool Linux Windows macOS

Graphics

GIMP GNU Image Manipulation Program Linux Windows macOS

Inkscape Vector graphics editor Linux Windows macOS

Multimedia

VLC Multimedia player Linux Windows macOS Android

Audacity Easy-to-use, multi-track audio editor and recorder Linux Windows macOS

Shotcut Free, open-source video editor Linux Windows macOS

Passwords

KeePassXC Password manager Linux Windows macOS

Network Tools

Wireshark Network protocol analyzer Linux Windows macOS

Education

GoldenDict dictionary supporting multiple formats (StarDict/Babylon/Lingvo/Dictd) and online dictionaries Linux Windows

Anki Anki is a program which makes remembering things easy Linux Windows Android macOS

Development

NetBeans IDE Open-source IDE supports Java, C/C++, php, JavaScript, HTML5 Linux Windows macOS

ROOT C++ data analysis framework Linux Windows macOS

python programming language Linux Windows macOS

Git version control system Linux Windows macOS

vnu HTML Validator helps to catch problems in HTML/CSS Linux Windows macOS