# Customers

From startups to public companies, Fern powers your API developer experience. Featured customers include NVIDIA, Adobe, ElevenLabs, Twilio, Cohere, and Square.

## Case studies

- [Auth0 ships identity features faster by generating SDKs with Fern](https://buildwithfern.com/customers/auth0.md): How Auth0 replaced hand-written SDKs with ones generated from a single OpenAPI spec.
- [Payabli builds best-in-class docs and SDKs for complex payment APIs with Fern](https://buildwithfern.com/customers/payabli.md): How Payabli migrated off Mintlify in three weeks and keeps 385 API examples and SDKs in eight languages in sync from a single source as their payment APIs change daily.
- [Deepgram unifies REST and WebSocket API documentation via Fern Docs](https://buildwithfern.com/customers/deepgram.md): How Deepgram consolidated REST (OpenAPI) and WebSocket (AsyncAPI 3.0) documentation into a single developer experience and opened contribution to PMs across the company.
- [Frame.io drives API adoption through streamlined docs and SDKs](https://buildwithfern.com/customers/frame.md): How Adobe's Frame.io team shipped SDKs alongside synced documentation and turned auth questions from 90% of their support load into self-serve answers.
- [Unleash scales AI-ready documentation with Fern Docs](https://buildwithfern.com/customers/unleash.md): How Unleash migrated 300+ pages off Docusaurus in two weeks and made every doc AI-ready as half their traffic shifted to LLM tools.
- [ElevenLabs scales voice AI infrastructure with Fern Docs & SDKs](https://buildwithfern.com/customers/elevenlabs.md): How ElevenLabs unified developer documentation and SDK generation on Fern as their API surface scaled to over a billion end users.