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Fern

Read 11 Fern reviews and testimonials from customers, explore 5 case studies and customer success stories, and watch customer videos to see why companies chose Fern as their API Documentation Software

Fern is an open-source platform for generating software development kits (SDKs) and application programming interface (API) documentation. Developer-focused companies like Square, Webflow, Intercom, and more use Fern to streamline their development process, typically starting by uploading an API specification (OpenAPI, AsyncAPI, OpenRPC, and more.

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Customer Rating Review Score based on 375 reference ratings
4.8/5.0 (375)

11Testimonials

  • "Fern has been instrumental in delivering an incredible onboarding experience to our customers. We often get compliments in sales calls and during new pilot onboardings about the quality of our …

  • "The Fern Definition is absolutely fantastic. Compared to OpenAPI, it's more ergonomic and comes with powerful capabilities - you can organize endpoints by resource, import types across files, and represent …

  • “We used to struggle with keeping our SDKs and Docs in sync. With Fern, we consolidated both into one streamlined pipeline, ensuring a consistent, high-quality developer experience.”

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5 Case Studies

  • How Candid sped up API development by 50% by going schema first

  • From handwritten to generated Cohere's SDK journey

  • The first autogenerated SDK with gRPC and REST

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Additional Fern Information & Resources

Read Fern Reviews, Testimonials & Customer References from 11 real Fern customers.

Browse Fern Case Studies, Customer Success Stories, & Customer References from 5 businesses that use Fern.