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Ease of use3Features3Value for money3Performance3Support3Privacy & security3

	Stack Overflow	GitHub Best match for you
Your score	6.5	7.9
AppDuo score	6.5	7.9
Ease of use	6.4	8.0
Features	7.3	9.2
Value for money	8.2	8.6
Performance	6.2	7.8
Support	5.5	7.4
Privacy & security	5.5	6.4
Starts at	Free	Free
Free plan
Free trial	—	30-day free trial
Web
iOS
Android
Windows
macOS
Linux
Works offline
Public API
Self-hostable
Open source
AI features
Real-time collaboration
End-to-end encryption
Templates
Integrations
Mobile app
Launched	2008	2008
Developer	Stack Exchange, Inc.	GitHub, Inc. (Microsoft)
Best for	Developers looking for fixes to specific errors, with answer history and attribution AI-tool users who want to verify outputs against cited sources; in the 2026 survey 15.9% of respondents said they visit more for verification Small engineering teams wanting to try an internal knowledge base on the free Stack Internal Starter plan	Open-source projects and small teams wanting Git hosting, pull requests, issues and CI/CD in one place Companies needing SSO, audit logs and a choice between Cloud and self-hosted (Enterprise Server) People who want close integration with VS Code and Copilot

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