Find Open Source Alternatives
Ditch paid software. Discover open source tools that actually work.
20+
Alternatives
8
Categories
514k+
GitHub Stars Tracked
Featured Projects
Excalidraw
90k
Virtual whiteboard for sketching hand-drawn diagrams and wireframes
MITSelf-hostable
TypeScriptReact
Cal.com
33k
Open source scheduling infrastructure — the Calendly alternative for individuals and teams
AGPL-3.0Self-hostable
TypeScriptReactNext.js
Mattermost
31k
Secure, self-hosted team messaging platform as an alternative to Slack
MITSelf-hostable
GoTypeScriptReact
NocoDB
50k
Open source Airtable alternative — turns any database into a smart spreadsheet
AGPL-3.0Self-hostable
TypeScriptVueNode.js
Nextcloud
28k
Self-hosted productivity platform with file storage, sharing, collaboration, and more
AGPL-3.0Self-hostable
PHPJavaScriptVue
Plausible Analytics
21k
Lightweight and privacy-friendly web analytics — no cookies, fully GDPR compliant
AGPL-3.0Self-hostable
ElixirTypeScriptReact
Twenty CRM
24k
Modern open source CRM — a beautiful alternative to Salesforce and HubSpot
AGPL-3.0Self-hostable
TypeScriptReactNode.js
AppFlowy
62k
Open source alternative to Notion — AI-powered workspace for wikis, docs, and projects
AGPL-3.0Self-hostable
RustDartFlutter
Jitsi Meet
24k
Open source video conferencing solution that is secure and easy to deploy
Apache-2.0Self-hostable
JavaScriptTypeScriptReact
Chatwoot
22k
Open source customer engagement platform — alternative to Intercom for live chat and support
MITSelf-hostable
RubyVueJavaScript
Listmonk
15.5k
High-performance, self-hosted newsletter and mailing list manager
AGPL-3.0Self-hostable
GoVueJavaScript
Penpot
35k
Open source design and prototyping platform for cross-domain teams
MPL-2.0Self-hostable
ClojureClojureScript
Docmost
8.5k
Open source collaborative wiki and documentation software — Notion and Confluence alternative
AGPL-3.0Self-hostable
TypeScriptReactNode.js
Top Projects
Excalidraw
90k
Virtual whiteboard for sketching hand-drawn diagrams and wireframes
MITSelf-hostable
TypeScriptReact
AppFlowy
62k
Open source alternative to Notion — AI-powered workspace for wikis, docs, and projects
AGPL-3.0Self-hostable
RustDartFlutter
NocoDB
50k
Open source Airtable alternative — turns any database into a smart spreadsheet
AGPL-3.0Self-hostable
TypeScriptVueNode.js
Penpot
35k
Open source design and prototyping platform for cross-domain teams
MPL-2.0Self-hostable
ClojureClojureScript
Cal.com
33k
Open source scheduling infrastructure — the Calendly alternative for individuals and teams
AGPL-3.0Self-hostable
TypeScriptReactNext.js
Mattermost
31k
Secure, self-hosted team messaging platform as an alternative to Slack
MITSelf-hostable
GoTypeScriptReact
Browse by Category
📊
Analytics
2 open source · 1 proprietary
👥
CRM
2 open source · 1 proprietary
☁️
Cloud Storage
1 open source · 1 proprietary
💬
Communication
2 open source · 2 proprietary
🎨
Design
2 open source · 2 proprietary
📧
Email Marketing
2 open source · 1 proprietary
📝
Note-Taking
2 open source · 1 proprietary
📋
Project Management
4 open source · 4 proprietary
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