Best Auth & identity
9 products in Auth & identity that are open source, out of 28 in the category. Listed in ranking order and compared on pricing, free tier, API, MCP server, SDK and open source. 9 of 9 have a free tier, 9 of 9 have an API, 3 of 9 offer an MCP server, 9 of 9 are open source.
- ZITADEL
Identity infrastructure, simplified
- SuperTokens
Open source user authentication
- Ory
Identity and access management (IAM) for applications, enterprises, and AI agents. Cloud-native, API-first, and self-hostable.
- Logto
Modern auth infrastructure for developers
- Hexclave
The open-source platform for everything user
- Phase Two
Managed Keycloak hosting and enterprise Keycloak support
- Authgear
Open-source auth and user management for consumer and frontline identity
- Asgardeo
Auth for Modern Apps
- Aserto
Fine-grained authorization service for applications and APIs
Side by side
| # | Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|---|
| 1 | ZITADEL | Freemium · from US$ 0 | yes | yes | no | yes | yes |
| 2 | SuperTokens | Freemium | yes | yes | no | yes | yes |
| 3 | Ory | Freemium | yes | yes | yes | yes | yes |
| 4 | Logto | Freemium · from $24/mo | yes | yes | no | yes | yes |
| 5 | Hexclave | Freemium | yes | yes | yes | yes | yes |
| 6 | Phase Two | Usage-based | yes | yes | no | yes | yes |
| 7 | Authgear | Freemium · from $0/month | yes | yes | yes | yes | yes |
| 8 | Asgardeo | Freemium | yes | yes | no | yes | yes |
| 9 | Aserto | Freemium | yes | yes | no | yes | yes |
Ranked by verification, completeness, extraction confidence and method (AI model or heuristic fallback), and API/MCP support; ties go to the newest listing. Paid plans aren't an input to the ranking. Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted.
All 28 products in Auth & identity →
API
curl 'https://toolgrep.com/api/products?category=auth&open_source=1'