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   * [Mocko.dev](https://mocko.dev/) — Proxy your API, choose which endpoints to mock in the cloud and inspect traffic, for free. Speed up your development and integrations tests.
   * [reqres.in](https://reqres.in) - A Free hosted REST-API ready to respond to your AJAX requests.
   * [microenv.com](https://microenv.com) —  Create fake REST API for developers with possibility to generate code and app in docker container.
+  * [neptune.ai](https://neptune.ai/) - Log, store, display, organize, compare and query all your MLOps metadata. Free for individuals: 1 member, 100 GB of metadata storage, 200h of monitoring/month
   * [News API](https://newsapi.org) — Search news on the web with code, get JSON results. Developers get 3,000 queries free each month.
   * [OCR.Space](https://ocr.space/) — An OCR API which parses image and pdf files returning the text results in JSON format. 25,000 requests per month free.
   * [OpenAPI3 Designer](https://openapidesigner.com/) — Visually create Open API 3 definitions for free.