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icon of Converse.js

Converse.js

Communication & CollaborationWeb & App Development

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

stars 3.2Klicense MPL-2.0lang JavaScript
ChatWebSocket ServersSelf Hosted+10
icon of Element

Element

Communication & CollaborationSecurity & MonitoringIT Management+1

Secure team chat built on the Matrix open protocol

stars 13Klicense AGPL-3.0lang TypeScript
ChatFile SharingSecurity+8
icon of Zulip

Zulip

Communication & CollaborationBusiness & Productivity

Organized team chat with threaded conversations, self-hostable

stars 25.1Klicense Apache-2.0lang Python
ChatOpen CoreSelf Hosted+2
icon of Scoold

Scoold

Communication & CollaborationBusiness & ProductivityIT Management+2

Self-hosted Q&A platform for internal team knowledge

stars 916license Apache-2.0lang Java
Knowledge ManagementKnowledge BaseCustomer Support+11
icon of Tox

Tox

Communication & CollaborationSecurity & Monitoring

Free encrypted P2P messaging and voice calls, no servers

stars 2.6Klicense GPL-3.0lang C
ChatSecurityFile Sharing+2
icon of Jami

Jami

Communication & CollaborationSecurity & Monitoring

Free P2P encrypted messaging, calls, and file sharing

stars 165license GPL-3.0lang C++
ChatFile SharingSecurity+7
icon of Mattermost

Mattermost

Communication & CollaborationSecurity & MonitoringIT Management

Team messaging for security-sensitive teams with air-gap support

stars 36.4Klicense NOASSERTIONlang TypeScript
Self HostedChatWorkflow Automation+5
icon of Anytype

Anytype

Business & ProductivitySecurity & MonitoringCommunication & Collaboration+3

Local-first self-hosted alternative to Notion and Linear

stars 7.4Klicense NOASSERTIONlang TypeScript
Note-taking AppsFile Sync & StorageSelf Hosted+13
icon of Huly

Huly

Product & Project ManagementCommunication & CollaborationBusiness & Productivity

One open source workspace to replace Jira, Slack, and Notion

stars 25.5Klicense EPL-2.0lang TypeScript
Project ManagementKnowledge ManagementFile Sharing+5
icon of Wire

Wire

IT ManagementCommunication & CollaborationSecurity & Monitoring

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

stars 2.8Klicense AGPL-3.0lang Haskell
ChatFile SharingVideo+6
icon of Ghostscript

Ghostscript

Web & App DevelopmentIT Management

Open source PDF and PostScript interpreter and converter

stars 224license NOASSERTIONlang C
Developer ToolsAPI Development ToolsCoding+4
icon of OpenProject

OpenProject

Product & Project ManagementCommunication & CollaborationBusiness & Productivity

Plan projects with Gantt, Scrum, and Kanban, all self-hostable

stars 14.9Klicense GPL-3.0lang Ruby
Project ManagementSelf HostedOpen Core+3
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