Nango

Nango.dev is a developer infrastructure platform that simplifies building product integrations with external APIs. It provides the infrastructure to build reliable, scalable integrations fast, including API authentication, a syncing framework, webhook handling, and observability GitHub, supporting over 400 APIs with 600+ pre-built integrations Y Combinator.

The platform takes a code-first approach where developers write integrations in TypeScript, keep them in their codebase, and test locally with Nango’s CLI, while Nango handles the heavy lifting of OAuth flows, credential management, rate limiting, retries, and data synchronization in production. It’s particularly useful for SaaS companies that need to integrate with common business tools like CRMs, calendars, and project management software, and it’s available as both a cloud service and self-hosted open-source solution.