slack-alternative

Macro is a unified workspace for teams: email, chat, docs, tasks, agents, calls, and CRM — @-linked together with shared AI memory.

A private, p2p alternative to Slack and Discord built on Tor & IPFS

A collaborative workspace where humans and AI agents work together in shared channels

Open-source, self-hostable alternative to Claude Tag — a Slack-style workspace where your team and its AI agents (Claude Code, Codex, GitHub Copilot, and more) work as teammates in channels, threads, DMs, and shared tasks. Your data stays on your machines.

A self-hosted home for your team's conversations, calls, meetings, and AI-assisted follow-up.

Open-source team collaboration where your conversations become your competitive edge. AI-powered, privacy-first, and you control every bit of it.

Node.js socket-io based one to one chat engine

Open-source workspace collaboration platform - chat, video calls, projects, files, calendar, notes, AI tools

Calm, fast, self-hosted team chat you run yourself — channels, threads, reminders, scheduled messages. One Docker compose file, MIT-licensed. Laravel + Vue + Reverb.

Backend services for an AI-powered, privacy-first team collaboration platform. Manages secure data, AI processing, and real-time communication to give you full control over your competitive edge.

Restya Core is Jira + Slack alternative. Launching soon!

A secure, end-to-end encrypted workspace for chat and tasks. Simpler than Basecamp, Monday, or Wrike—no bloat, just essentials to get work done. Plus, earn $200 for every team you refer. It includes a free plan for up to 10 users - https://remote.team/en/

Open-source team collaboration platform built for modern teams. Real-time messaging, channels, DMs, and AI-powered assistance. Built with Next.js 16, and Neon Postgres. An extensible Slack alternative with AI integration, perfect for developer communities and remote teams.

Cloudron.io app package for self-hosting Buzz.xyz Nostr relay, with storage management, backups, and auto-updates.

Fork of Huly/Platform - by few of original authors, Platform -> Foundation.

A Slack-style hub for humans and AI agents — real-time channels, external agent bots, file-aware chat, and channel memory. Open-source & self-hostable & MacOS & IOS.

🔥🔥🔥 All-in-one project management and team chat for product teams that want speed without the bloat. Plan work, track progress, and keep conversations close to the tasks.

A list of self-hosted alternatives to Discord. Including Spokes, Mattermost, Rocket.Chat, and Matrix.

Self-hosted team chat — channels, threads, DMs, search, polls, SSO. One JVM, one Postgres, one systemd unit. Java 25, Spring Boot 4, embedded Lucene.

Open-source, self-hosted chat & meeting platform with text, voice, and screen sharing.