Tesseral vs Riot
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.
Paris cybersecurity employee risk monitoring at $10M+ ARR 2024 (triple-digit growth) serving Mistral AI, Deel, Intercom, Y Combinator; $45M total ($30M Left Lane Series B Feb 2025 at $170M val) with AI coach Albert competing with KnowBe4 for human risk management.
About
Riot is a Paris, France-based employee cybersecurity awareness and monitoring platform — backed with $45 million in total funding including a $30 million Series B in February 2025 led by Left Lane Capital at a $170 million+ post-money valuation with Y Combinator, Base10, and FundersClub — providing 1,500+ organizations including Mistral AI, Y Combinator, Modern Treasury, Deel, Intercom, L'Occitane, and Le Monde with real-time employee cybersecurity vulnerability detection and AI-powered awareness coaching through Albert, Riot's AI cyber coach. Surpassing $10 million in annual revenue in 2024 with triple-digit year-over-year growth, Riot detects employee-level security risks (weak passwords, unsafe file permissions, phishing susceptibility) and guides employees through interactive remediation coaching without requiring IT security team manual intervention.
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