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Authentication

Auth providers, SSO, identity management

Reviewed byRoman Kยท 2026-05-06

Soft.xyz tracks 10 authentication tools, 10 with a free plan, 5 open source. Paid entries start at $0/mo (Lucia) and go up to $35/mo (Auth0). Most GitHub traction: Better Auth with 28,900 stars. Rankings below use real metrics, not vendor claims.

10 authentication tools currently tracked: 6 open source, 4 with a managed free tier, 0 paid-only.

By GitHub activity the most popular is Better Auth (28.9k stars).

Cheapest paid plan in the list starts at $25/mo (Clerk).

Discontinued in Authentication

2 tracked products in this category are no longer maintained. Check before you build on one.

FAQ

How many authentication tools are tracked here?

10, of which 10 offer a free plan and 5 are open source.

What is the cheapest authentication tool?

Lucia starts at $0/mo, while Auth0 is the priciest tracked entry at $35/mo.

Which authentication tool has the most traction?

Better Auth leads the tracked set with 28,900 GitHub stars.