Shutdown
Oct 2025Founder Ned O'Leary said Tesseral decided to wind down the business and return investors' capital.
SourceThe open source platform for managing identity in business software
Company research
Public company, workplace, funding, and market signals
Overview
Tesseral is an open-source, API-first B2B identity and access management platform for SaaS apps, offering login UI, SSO, SCIM, RBAC, scoped API keys, audit logs, impersonation, and MFA. It launched in 2025, but the founder later said in Oct. 2025 that the company would wind down and return investors' capital.
Primary product
Open-source B2B identity and access management infrastructure
Founded
2023
Headquarters
San Francisco, California, United States
Team size
1-10
Work style
Onsite
Industry
Software Development
Sub-industry
Identity and access management / authentication infrastructure
Offices
Russian Hill neighborhood, San Francisco, California, United States
2435 Polk Street, Suite 21, San Francisco, CA 94109
Business model
open-source self-hosted software
managed SaaS / cloud
enterprise custom deployment
free tier / freemium
subscription pricing
Funding
Stage
Seed
Total raised
$3.9M
Latest round
Seed · May 2025
Latest amount
$3.3M
People & investors
Leadership
Cofounder & CEO
Cofounder & CTO
Principal Software Engineer
Head of Growth
Work & culture
Founder-led, engineering-heavy, open-source oriented, and very focused on developer experience and security. Public messaging emphasizes direct access to founders, fast implementation, and hands-on support.
Work style
Onsite
Product & market
Pricing
Open-source self-hosted community edition is free; managed Studio cloud tier is $0/month up to 200 users and 50 organizations; Enterprise is custom pricing with managed deployment, SLA, and white-glove onboarding.
Differentiators
- —Built specifically for B2B SaaS instead of general-purpose consumer auth
- —Open-source with self-hosted, managed, and dedicated deployment options
- —Enterprise features out of the box: SAML, SCIM, RBAC, audit logs, API keys, impersonation
- —Developer-friendly SDKs for multiple frameworks
- —Direct founder-led support and implementation guidance
- —Free self-hosted option without a license fee
Technology
TypeScript
JavaScript
Go
Next.js
React
Flask
Express.js
SAML
OIDC
SCIM
RBAC
WebAuthn / passkeys
TOTP
Webhooks
OAuth 2.0
API keys
Customers
B2B SaaS companies from seed to enterprise
ion design
Competitors
Auth0
WorkOS
Clerk
Keycloak
Ory
Zitadel
Scale & contact
Estimated monthly visits
2.8K
Signals & risks
Latest news
LinkedIn · Oct 2025
Founder Ned O'Leary said Tesseral would wind down and return investors' capital, citing a difficult path to venture-scale and limited differentiation in a crowded auth market.
The SaaS News · May 2025
Independent coverage of Tesseral's seed round and investors.
SiliconANGLE · May 2025
Coverage of Tesseral's launch and seed funding; reiterates the company's B2B auth infrastructure focus and investor list.
FinSMEs · May 2025
Seed-round coverage naming the San Francisco-based company, its funding amount, and the same investor group as the launch announcement.
Business Wire · May 2025
Official launch announcement for Tesseral's emergence from stealth with $3.3M seed financing from Y Combinator and several prominent angel investors.
Jobs and careers at Tesseral
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