Tesseral vs Notabene
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.
Crypto Travel Rule compliance platform connecting 165+ VASPs globally for KYC data sharing across 80+ jurisdictions; $27.1M with DRW Trading Series B processing $500B+ transactions preventing $1B+ high-risk.
About
Notabene is a Brooklyn-based cryptocurrency compliance platform that helps crypto exchanges, financial institutions, and virtual asset service providers (VASPs) meet Travel Rule requirements across 80+ jurisdictions — providing the infrastructure for compliant transfer of customer identification information between crypto businesses when transactions exceed regulatory thresholds (typically $1,000+ in the US, $1,000 EUR in Europe). Founded in 2019 and backed by Y Combinator with $27.1 million raised including a $14.5 million Series B led by DRW Trading Group in November 2024, Notabene serves 165+ companies globally, processing $500 billion+ in transactions annually while preventing $1 billion+ in high-risk transactions in 2024.
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