Awesome Crossplatform

A list of native software that works at least on Windows, MacOS and Linux.

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Recommended native installation methods

Windows: Chocolatey
MacOS: Homebrew
Linux: Flatpak
ChromeOS: Chromebrew
Android: F-Droid

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2D Animation

OpenToonz: Open-source full-featured 2D animation creation software.
Synfig: 2D animation software.
Tahoma2D: Free and powerful software for 2D and stop motion animator.

3D Modeling & CAD (Computer-Aided Design)

Blender : 3D creation suite.
CAD Assistant: 3D viewer and converter for CAD and mesh files.
FreeCAD: 3D parametric modeller.
LibreCAD: CAD application.

AI/LLM Chat Interfaces

ChatALL: Concurrently chat with ChatGPT, Bing Chat, Bard, Claude, ChatGLM and more.
ChatboxAI: Desktop app for GPT-4 / GPT-3.5 (OpenAI API).
Cherry AI: Desktop client that supports multiple LLM providers.
DeepChat: AI assistant.

Audio Production

Audacity: Multi-track audio editor and recorder.
Cardinal: Virtual modular synthesiser plugin.

Communication & Collaboration

Cabal: Desktop client for the chat platform Cabal.
Caprine: Elegant Facebook Messenger desktop app.
Chatterino: Chat client for https://twitch.tv.
Discord : Voice and text chat software.
Fedistar: Multi-column Mastodon, Pleroma, and Friendica client for desktop.
Slack : Team communication and collaboration software.
Telegram : Messaging app with a focus on speed and security.
Webex : Video communication and virtual meeting platform.
Zoom : Video communication and virtual meeting platform.

Email

Betterbird : Fine-tuned, enhanced version of Mozilla Thunderbird.
ElectronMail: Unofficial ProtonMail Desktop App.
Mailspring: Fork of Nylas Mail.
Thunderbird: Customizable email client.

File Management & System Utilities

AngryIP: Network scanner.
Balena Etcher: Tool to flash OS images to SD cards & USB drives.
BiglyBT: Bittorrent client based on the Azureus open source project.
Deluge: BitTorrent client.
Dropbox : Client for the Dropbox cloud storage service.
Electorrent: Desktop remote torrenting application.
FBreader: Book reader.
Filezilla: Open-source FTP, FTPS and SFTP client.
Free Download Manager: Download accelerator and organiser.
FreeFileSync: Folder comparison and synchronization software.
Jdownloader: Download manager.
LocalSend: Secure, cross-platform file sharing over a local network without internet..
Transmission: Open-source BitTorrent client.
VirtualBox: Virtualiser.

Game Development

Blockbench: 3D model editor for boxy models and pixel art textures.
Defold: Game engine for development of desktop, mobile and web games.

Gaming & Emulation

Doomsday Engine: Enhanced source port of Doom, Heretic, and Hexen.
Heroic: Game launcher.
Steam: Video game digital distribution service.

Graphics & Design Tools

BirdFont: Font editor .
Darktable: Photography workflow application and raw developer .
Fontforge: Font editor and converter for outline and bitmap fonts .
Gimp: Free and open-source image editor .
Inkscape: Vector graphics editor.
Krita: Free and open-source image editor.
Lunacy: Graphic design software.
MyPaint: Painting and sketching from scratch.
Scribus: Free and open-source page layout program.
Upscayl: AI image upscaler .

Media Players

VLC: Multimedia player.

Office Suites

FreeOffice : A free, basic office suite from SoftMaker.
LibreOffice : Free cross-platform office suite.
OnlyOffice : Document editor.
OpenOffice : Free and open-source productivity suite.
Softmaker : Comprehensive productivity package.
WPS Office : Versatile and lightweight office suite.

Personal Finance

Actual: Privacy-focused app for managing your finances.

Productivity

Affine: Note editor and whiteboard.

Software Development & IT Tools

Aladin: Interactive sky atlas.

Video Editing & Production

Blender : Blender Video Sequence Editor (VSE).
Davinci Resolve : Video editing, color correction, visual effects and audio post-production.
Kdenlive : Free and Open Source Video Editor.
OBS Studio: Open-source software for live streaming and screen recording.
Shotcut : Video editor.

Web Browsers

Biscuit: Browser to organise apps .
Brave: Web browser focusing on privacy .
Chrome: Web browser from Google .
Chromium: Free and open-source web browser .
Edge: Web browser from Microsoft .
Firefox: Web browser from Mozilla .
LibreWolf: A custom version of Firefox, focused on privacy, security and freedom .
Opera: Web browser .
Thorium: Fast chromium browser .
Vivaldi: Web browser with built-in email client focusing on customization and control .

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Are we missing out on any cross-platform programs?

Please, upload a discussion.