Security Open Source Tools

Alternative toGlean

Self-hosted knowledge base with RAG search, AI agent, and wiki

• 34,874 GitHub stars
• MITLicence MIT
• #LLM

Alternative toDatadog

Open source APM with logs, traces, metrics, and dashboards

• 32,409 GitHub stars
• MITLicence MIT
• #Monitoring

Alternative toQualys

Open source security tools for finding vulnerabilities at scale

• 32,167 GitHub stars
• MITLicence MIT
• #Security

Alternative toZenity

Self-hosted AI agent auditing across 60 trust and safety inspections.

• 30,695 GitHub stars
• Apache-2.0Licence Apache-2.0
• #AI Agents

Alternative toClerk

Drop-in TypeScript auth with MFA, SSO, and multi-tenancy support

• 30,392 GitHub stars
• MITLicence MIT

Alternative toZoom

Free video conferencing you can self-host with no account needed

• 30,112 GitHub stars
• Apache-2.0Licence Apache-2.0
• #Video

Alternative to1Password

Cross-platform open source password manager with browser plugin

• 29,338 GitHub stars
• #Security

Alternative toGitHub

Self-hosted Git server with CI/CD, security scans, and planning

• 24,535 GitHub stars
• MITLicence MIT

Alternative toAstrill VPN

Fast and censorship-resistant proxy solution

• 22,692 GitHub stars
• MITLicence MIT

Alternative toAmazon RDS for PostgreSQL

World's most advanced open source relational database

• 22,481 GitHub stars
• PostgreSQLLicence PostgreSQL
• #Database