Alternatives to Authress

Authress: Login and access control API. 8 products similar to Authress, compared on pricing, free tier, API, MCP server, SDK and open source. 8 of 8 have a free tier, 8 of 8 have an API, 4 of 8 offer an MCP server, 4 of 8 are open source.

ZITADEL
Identity infrastructure, simplified
Auth & identity free tierAPISDKopen source
WorkOS
Enterprise authentication and identity platform for SaaS companies
Auth & identity free tierAPIMCPSDK
Logto
Modern auth infrastructure for developers
Auth & identity free tierAPISDKopen source
Ory
Identity and access management (IAM) for applications, enterprises, and AI agents. Cloud-native, API-first, and self-hostable.
Auth & identity free tierAPIMCPSDKopen source
MojoAuth
Passwordless authentication API for consumer apps, load tested at 25,000 logins per second
Auth & identity free tierAPISDK
PropelAuth
Authentication for B2B products
Auth & identity free tierAPIMCPSDK
Asgardeo
Auth for Modern Apps
Auth & identity free tierAPISDKopen source
Clerk
Authentication and user management for applications
Auth & identity free tierAPIMCPSDK

Side by side

Product	Pricing	Free tier	API	MCP server	SDK	Open source
Authress	Usage-based	yes	yes	no	yes	no
ZITADEL	Freemium · from US$ 0	yes	yes	no	yes	yes
WorkOS	Freemium	yes	yes	yes	yes	no
Logto	Freemium · from $24/mo	yes	yes	no	yes	yes
Ory	Freemium	yes	yes	yes	yes	yes
MojoAuth	Freemium · from $150/month (Business Pro)	yes	yes	no	yes	no
PropelAuth	Freemium	yes	yes	yes	yes	no
Asgardeo	Freemium	yes	yes	no	yes	yes
Clerk	Freemium	yes	yes	yes	yes	no

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. Similarity comes from the products' descriptions.

API

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