Tesseral vs WorkOS
Side-by-side comparison of AI visibility scores, market position, and capabilities
US open-source B2B authentication platform for SAML and SCIM enterprise SSO; YC $3.3M seed May 2025 from Paul Graham backing competing with WorkOS for SaaS company enterprise identity infrastructure.
About
Tesseral is a US-based open-source B2B authentication infrastructure company — backed by Y Combinator with $3.3 million in seed funding raised in May 2025 from YC, Jessica Livingston, and Paul Graham — building developer-friendly SAML, SCIM, and enterprise SSO infrastructure that enables SaaS companies to implement enterprise authentication standards without the months of engineering work that supporting each enterprise customer's identity provider (Okta, Azure AD, Google Workspace) typically requires. Founded by Ned O'Leary and Ulysse Carion, Tesseral democratizes enterprise authentication capabilities that were previously only accessible to large organizations with dedicated identity engineering teams.
Enterprise features as a service for B2B SaaS; SSO, SCIM directory sync, and audit logs via API, acquired Warrant for fine-grained authorization in 2025.
About
WorkOS is a developer platform providing enterprise features as a service, allowing SaaS companies to add single sign-on (SSO), directory sync (SCIM), audit logs, and user management to their applications through simple API integrations rather than building these capabilities from scratch. Founded in 2020 and headquartered in San Francisco, WorkOS was founded by Michael Grinich with the insight that every SaaS company eventually needs the same enterprise features — SAML SSO, SCIM provisioning, fine-grained RBAC — and building these correctly is complex, time-consuming, and often done poorly.
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