Chat Open Source Tools

Alternative toSendbird Chat

Self-hosted instant messaging platform for web and mobile apps

• 13,529 GitHub stars
• GPL-3.0Licence GPL-3.0
• #Chat

Alternative toWWhatsApp

A secure messaging app focused on privacy and user experience.

• 10,742 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Chat

Alternative toTeamSpeak

Free open source low-latency voice chat for gaming teams

• 8,351 GitHub stars
• BSD-2-ClauseLicence BSD-2-Clause
• #Chat

Alternative toGather

Open source 2D virtual office with proximity video calls

• 5,870 GitHub stars
• CustomLicence AGPL-3.0-only WITH Commons-Clause
• #Chat

Alternative toZoom

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

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

Alternative toSlack

Open protocol for secure, decentralized messaging and VoIP

• 4,716 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Chat

InCustomer Support

Open-source tools that work instantly, no signup required

• 4,511 GitHub stars
• GPL-3.0Licence GPL-3.0

Alternative toElement

Elegant open source Matrix client for self-hosted chat

• 3,940 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Chat

Alternative toDiscord

Self-hosted open source Discord alternative with servers

• 3,406 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Chat

Alternative toSlack

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

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