API Platform vs NestJS: What are the differences?
Developers describe API Platform as "REST and GraphQL framework to build modern API-first projects". It is a set of tools to build and consume web APIs. You can build a fully-featured hypermedia or GraphQL API in minutes. Leverage its awesome features to develop complex and high performance API-first projects. Extend or override everything you want. On the other hand, NestJS is detailed as "A progressive Node.js framework for building efficient and scalable server-side applications by @kammysliwiec". Nest is a framework for building efficient, scalable Node.js server-side applications. It uses progressive JavaScript, is built with TypeScript (preserves compatibility with pure JavaScript) and combines elements of OOP (Object Oriented Programming), FP (Functional Programming), and FRP (Functional Reactive Programming)
Under the hood, Nest makes use of Express, but also, provides compatibility with a wide range of other libraries, like e.g. Fastify, allowing for easy use of the myriad third-party plugins which are available..
API Platform and NestJS can be primarily classified as "Frameworks (Full Stack)" tools.
NestJS is an open source tool with 18.3K GitHub stars and 1.31K GitHub forks. Here's a link to NestJS's open source repository on GitHub.
According to the StackShare community, NestJS has a broader approval, being mentioned in 19 company stacks & 69 developers stacks; compared to API Platform, which is listed in 6 company stacks and 6 developer stacks.