YCW23· AI· DevtoolsFern
Instantly offer SDKs and API Docs
Founders
Not read from YC yet; the weekly run fills these in.
Same space
Competitors
Closest in what they build, same category.
Adjacent
Overlapping tags, a different niche.
RequestlyW22Open-Source Postman alternativeShared: developer tools, open source, apiAcquired
NangoW23A single API for all your integrationsShared: developer tools, open source, apiActive
RecipeUIS23The open source Postman alternative.Shared: developer tools, open source, apiActive
TesseralW24The open source platform for managing identity in business softwareShared: developer tools, open source, apiInactive
PayloadS22Developer-First Headless CMS and Application FrameworkShared: developer tools, open source, apiAcquired
Also from W23 in AI
Batchmates in Winter 2023.
DAGWorks Inc.W23Open source tools & services for reliable AI Agents & AI ApplicationsAcquired
EscapeW23Offensive security for the teams that are 100x outnumberedActive
HeliconeW23LLM Observability for DevelopersAcquired
LangfuseW23Open source LLM engineering platformAcquired
LiteLLMW23Call every LLM API like it's OpenAI [100+ LLMs]Active
OpenIntW23Open Source Embedded Product IntegrationsAcquired
About Fern
APIs underpin the internet but are still painful to work with. They are often untyped, unstandardized, and out-of-sync across multiple sources of truth. Fern helps companies deliver SDKs and API documentation that they’re are proud to share with their customers. Since launching in 2023, we’ve been trusted by over 200 customers, including industry leaders like Square, Webflow, ElevenLabs, Auth0, and Intercom, to power their developer and agent experiences. We’re fewer than 40 people, based in Brooklyn, NY, and are building open source.
New York City, NY, USA
Fern: questions
Which YC batch was Fern in?
Fern was in Y Combinator's Winter 2023 batch (W23).
Is Fern still active?
Y Combinator lists Fern as acquired.
Where is Fern based?
Fern lists New York City, NY, USA as its location on YC's directory.
Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.