Open Source Tools Catalog | open-source.store

46 tools found

Rocket.Chat

Rocket.Chat is an open-source Slack alternative providing self-hosted team messaging, custom TypeScript apps, and complete control over internal data.

46.4kLinuxmacOSWindowstoday

MITTeam Chat & Collaboration

Mattermost

Mattermost is an open-source alternative to Slack and Teams that delivers secure team messaging, boards, and incident workflows with self-hosted control.

39.5kLinuxmacOSWindowstoday

AGPL-3.0Team Chat & Collaboration

Chatwoot

Chatwoot is an open-source helpdesk replacing Intercom and Zendesk with self-hosted omnichannel support across email, WhatsApp, and live chat.

38.8kLinuxmacOSWindowstoday

MITHelpdesk & Support

Jitsi Meet

Jitsi Meet is a self-hosted alternative to Zoom with WebRTC in-browser video calls, end-to-end encryption, and complete infrastructure data sovereignty.

30.2kLinuxmacOSWindowstoday

Apache-2.0Video Conferencing

Hey

Hey is a decentralized social web client for Lens Protocol that replaces centralized microblogging on X with portable on-chain identities and open data.

29.4kWeb2mo ago

GPL-3.0Forums & Discussions

Zulip

Zulip is an open-source team chat platform replacing Slack with organized topic-based threading, rich Markdown support, and self-hosted data control.

26.2kLinuxmacOSWindows1d ago

Apache-2.0Team Chat & Collaboration

Edgar Sipki

Go & gRPC engineer · founder of EasyP

Promoted

Mentoring for backend developers. Consulting for startups.

Go, gRPC and Protobuf done right, LLM agents in production, and the hard parts of shipping a first product.

GogRPCProtobufLLM agents

sipki.online

Forem

Forem is an open-source community platform replacing Bettermode with self-hosted discussions, Markdown publishing, and zero member fees.

22.8kLinuxmacOSDockertoday

AGPL-3.0Forums & Discussions

UVdesk

UVdesk is an open-source ticketing system replacing Freshdesk with self-hosted Symfony architecture, multi-mailbox routing, and zero per-agent fees.

19.6kLinuxmacOSWindows27d ago

OSL-3.0Helpdesk & Support

Bluesky

Open-source microblogging client and AT Protocol network featuring custom domain handles, open firehose APIs, and user-selected feeds.

18.4ktoday

MITForums & Discussions

Apache Answer

Apache Answer replaces proprietary forums like vBulletin with a self-hosted, tag-based Q&A platform featuring accepted answers and plugin connectors.

15.7kDockerLinuxtoday

Apache-2.0Forums & Discussions

K-9 Mail

K-9 Mail is an open-source Android email client that replaces Microsoft Outlook with direct IMAP synchronization and zero cloud-proxy data logging.

14.2kandroid1d ago

Apache-2.0Email Clients & Productivity

Thunderbird

Thunderbird is an open-source email client replacing Microsoft Outlook with unified inboxes, native CalDAV calendar sync, and zero subscription costs.

14.2kLinuxmacOSWindows1d ago

Apache-2.0Email Clients & Productivity

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