api libraries - Robuta Search

https://opencagedata.com/sdks

Code libraries / SDKs in over 30 different programming languages to help you quickly get started with using the OpenCage Geocoding API

https://api.kde.org/

https://ethereum.org/developers/docs/apis/backend/

An introduction to the Ethereum client APIs that let you interact with the blockchain from your application.

https://redis.io/docs/latest/develop/clients/

Connect your application to a Redis database and try an example

https://ethereum.org/developers/docs/apis/javascript/

An introduction to the JavaScript client libraries that let you interact with the blockchain from your application.

https://libraries.io/api

Discover open source packages, modules and frameworks you can use in your code.