Ditch theSaaS Tax
Every alternative gets three independent scores — repo health, technical quality, dependency risk — not a vendor's pitch or a star count.
Three independent scores
Every app and package scored the same way — deterministic, disclosed, and repeatable.
Repo Health
Deterministic, pulled straight from GitHub — activity, maintenance, community, maturity, momentum. No opinions, just data.
Technical Score
A second, independent read — architecture, code quality, innovation, how hard it is to learn. Scored separately, so one bad metric can't hide behind the other.
Dependency Health
What the app depends on gets scored too — staleness, footprint, known vulnerabilities via OSV.dev. An app inherits every dependency's risk.
Featured Apps
Hand-picked open source alternatives with high health scores
Authgear
AuthenticationOpen-source, self-hostable authentication platform with passkeys, biometric login, SSO, MFA, and GraphQL admin API — a full Auth0/Clerk/Firebase alternative for SaaS and mobile apps.
Medplum
Developer ToolsAn open-source, FHIR-native healthcare platform that gives developers a compliant backend, authentication, a React component library, and serverless bots to build clinical applications in weeks instead of years.
Netmaker
Automate secure WireGuard mesh networks from homelab to enterprise scale without...
Onlook
An open-source, AI-first visual editor that lets designers and developers build,...
NocoBase
Open-source AI + no-code platform that lets coding agents and people collaborate...
ntfy
Send push notifications to your phone or desktop from any script or service usin...
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Find the right tool for your specific needs
The Collection
The dataset behind every score on this site — real numbers, disclosed methodology, updated continuously.
View InsightsLatest Research · July 1, 2026
What Makes Open Source Acquirable: Lessons from 149 YC Companies
Standalone apps get acquired roughly seven times more often than libraries. Stars barely matter. And the first three weeks after the deal predict the outcome better than anything in the press release.
