Open Source Projects tagged "Chat"
A curated collection of the best open source projects tagged "Chat". Each listing includes a website screenshot along with a detailed review of its features.
Manage, build, and run AI agent teams around the clock
Stars
82,245Last commit
22 hours agoLicense
Unknown
A collaborative platform to create, schedule, and operate AI agents that handle long-running tasks, team workflows, and automated jobs without constant oversight.
Open Source Alternative to:
Self-hosted team messaging with voice, video, and AI
Stars
46,088Last commit
1 day agoLicense
MIT
Open source communication platform combining messaging, voice, video, and AI for organizations that need full data control, air-gapped deployments, and zero-trust security.
Open Source Alternative to:
AI second brain for research, automation, and personal agents
Stars
37,118Last commit
1 month agoLicense
AGPL-3.0
Self-hostable AI assistant that connects to your docs and the web, lets you build agents, schedule automations, and run research with verifiable citations.
Open Source Alternative to:
Organized team chat for distributed teams
Stars
25,842Last commit
23 hours agoLicense
Apache-2.0
Zulip is an open-source team chat app that uses threaded conversations to keep communication organized and efficient for teams of all sizes.
Open Source Alternative to:
Build your own federated discussion community
Stars
14,578Last commit
19 days agoLicense
AGPL-3.0
Open-source forum and link aggregator that connects communities across the fediverse. Self-hosted, ad-free, with powerful moderation tools and federation.
Open Source Alternative to:
Self-hosted team workspace with chat, docs, and databases
Stars
5,050Last commit
5 months agoLicense
Apache-2.0
Local-first collaboration platform combining real-time chat, rich text pages, databases, and file management in a single self-hostable workspace.
Open Source Alternative to:
Open-source customer communication platform
Stars
3,564Last commit
2 months agoLicense
Unknown
Versatile messaging solution for businesses to engage customers through multiple channels, with AI-powered automation and analytics.
Open Source Alternative to:
Serverless team chat over Tor, no phone number needed
Stars
2,645Last commit
2 days agoLicense
GPL-3.0
Quiet is a peer-to-peer messaging app that syncs messages directly between devices over Tor, with no central server, no phone number required, and no metadata leaks.
Open Source Alternative to:
Create custom spaces to chat, game, and connect globally
Stars
1,694Last commit
2 days agoLicense
MIT
Build your own community space for gaming, chatting, and hanging out with friends worldwide. Customize your environment for the perfect social experience.
Open Source Alternative to:
AI chat companion with versatile model support
Stars
1,530Last commit
9 months agoLicense
Apache-2.0
Open-source chat application that lets you interact with multiple AI models in one interface, offering flexible conversations and diverse capabilities.
Open Source Alternative to:
Transform team email into efficient collaborative workflows
Stars
1,758Last commit
7 months agoLicense
AGPL-3.0
Streamline team communication with shared inboxes, unlimited email addresses, and customizable workflows. Perfect for modern businesses seeking organized email management.
Open Source Alternative to:
Messaging SDK with AI agents for web, iOS, and Android
Stars
544Last commit
3 days agoLicense
Apache-2.0
Build branded chat apps with AI agents, group messaging, document exchange, and digital wallets using React and React Native components.
Open Source Alternative to:
Community-driven platform built for transparency
Stars
395Last commit
11 days agoLicense
AGPL-3.0
Open-source communication platform with multi-window chat, economy systems, and privacy-first approach. Built by communities for superior performance.
Open Source Alternative to:
Secure open source messaging for professional teams
Stars
164Last commit
23 hours agoLicense
AGPL-3.0
Free Matrix-based messenger with end-to-end encryption, multi-platform bridges, and on-premise deployment. Connect across 30+ networks securely.
Open Source Alternative to:
Secure, scalable chat server for modern applications
Stars
158Last commit
9 days agoLicense
GPL-3.0
Open source chat server with end-to-end encryption, clustering support, and comprehensive messaging features for building real-time communication apps
Open Source Alternative to:
No-code platform to build AI agents and automate support
Stars
14Last commit
2 days agoLicense
MIT
Build AI chatbots, automate customer support workflows, and connect live agents across web, WhatsApp, email, and voice with a no-code visual designer.
Open Source Alternative to:
Stellar Hosted – Managed Open Source software hosting in the EU: secure, compliant, fast.
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