Password Managers
KeepassXC: Offline password manager.
Bitwarden: Cloud based password manager.
Decentralized Web
IPFS Desktop: Desktop application for IPFS Distributed Web
Atek Cloud: An open-source peer-to-peer home cloud
Privacy / Security
I2P: Private peer to peer networking layer.
VeraCrypt: Open source cross-platform disk encryption
Browsers
Ungoogled Chromium: Chromium fork with improved privacy
LibreWolf: Firefox fork with improved privacy
Falkon: KDE Project’s web browser
Evolution: A mail client, calendar, address book, and task manager in one.
Thunderbird: Mozilla Foundation’s email, chat, and calendaring client.
Mailspring: Easy to use, modern mail client with integrations to major email providers
KMail: KDE’s Email client that supports many mail protocols
Communication
Tox: End to end decentralized encrypted messenger with voice, video calls, screen sharing, file sharing.
Telegram: The world’s most popular messenger.
Kotatogram: Alternate Telegram client with improved local features.
AnyDesk: Remote desktop / support software
Jitsi: Free video conferencing
Jami: Free and open source peer to peer video conferencing.
Social Media
LBRY: Blockchain media platform
PeerTube: Decentralized video broadcasting
Nitter: Alternative twitter front-end
Invidious: Alternative Youtube front-end
Libreddit: Alternative Reddit front-end
Owncast: Self-hosted live video and web chat server
Graphics
Krita: Free and open source digital illustration program.
Inkscape: Professional vector based graphics editor.
GIMP: One of the oldest most well known image editors.
Pinta: Bitmap editor similar to Paint.NET
Gravit Designer: Vector based design app
Blender: End to end 3D creation suite
Audio
Nuclear: Stream music from any free source on the internet (Youtube/Soundcloud)
Vocal: Modern podcast client
Photography
DarkTable: Virtual lighttable and darkroom for photography.
DigiKam: Personal photo management
Audio Engineering
Ardour: Cross-platform recording & audio engineering.
LMMS: Music production software.
Mixxx: DJ Production Software
Video Editors
Kdenlive: The KDE project’s video editor
Davinci Resolve: Film-professional video editor.
OpenShot: Easy to use, powerful video editor.
Video Utilities
OBS Studio: Video recording and live streaming
Kazam: Record videos of your screen
Peek: Record videos and gifs of your screen
Spectacle: KDE’s Screenshot Tool
Technical Tools
Remmina: A remote desktop client
VirtualBox: Create virtual machines
Development
Postman: Make web requests and test APIs
VSCodium: Visual Studio Code with less Telemetry
Sublime: Text editor and IDE
Atom: A hackable text editor
Emacs: Highly extensible text editor
Vim: Highly configurable text editor
Writing
CherryTree: Hiearchial note taking application that stores multimedia notes in an encrypted database. (not markdown)
Trillium Notes: Build knowledge bases & graphs with this extensible note taking application (not markdown)
Joplin Notes: Create simple notes and todo lists using markdown.
Reading
Foxit PDF: Feature rich PDF reader.
Sioyek: PDF reader for academic papers
Office
LibreOffice: Most popular open-source office suite for Linux.
OnlyOffice: Collaborative online document editor
CryptPad: Browser based encrypted document editor
HomeBank: Personal money management
Utilities
Gnome Extensions: Extensions for GNOME Desktop (can be installed through web browser)
Conky: System monitor and desktop widgets
Education
Celestia: Explore space in 3D
Marble: Offline globe and world atlas
Stellarium: Open source plantearium
Veyon: Control & monitor classroom computers