File Sharing Open Source Tools

Alternative toZoom

Free browser-based video calls with no sign-up required

• 4,800 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Chat

Alternative toMicrosoft 365

Free office suite with Writer, Calc, and Impress on any platform

• 4,540 GitHub stars
• GPL-3.0Licence GPL-3.0

Alternative toSlack

Self-hosted web-based XMPP chat client for any server

• 3,301 GitHub stars
• MPL-2.0Licence MPL-2.0
• #Chat

Alternative toiText 7

Open source Java library for creating and parsing PDFs

• 3,133 GitHub stars
• Apache-2.0Licence Apache-2.0

Alternative toMicrosoft Teams

End-to-end encrypted messaging, voice, and file sharing

• 2,781 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Chat

Alternative toThreema Work

Free encrypted P2P messaging and voice calls, no servers

• 2,696 GitHub stars
• GPL-3.0Licence GPL-3.0
• #Chat

Alternative toSlack

Peer-to-peer serverless chat app with no central server

• 2,659 GitHub stars
• GPL-3.0Licence GPL-3.0
• #Chat

Alternative toDiscord

Free open source Discord reimplementation with full API parity

• 2,210 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Chat

Alternative toWWhatsApp

Free P2P encrypted messaging, calls, and file sharing

• 168 GitHub stars
• GPL-3.0Licence GPL-3.0
• #Chat

Alternative toMicrosoft Edge

KDE-native file manager and browser with multi-protocol support

• 110 GitHub stars