Voiden is a developer-first API client with local storage, Git-integrated, all based on markdown + offline support.

Datadog is a cloud-based monitoring and analytics platform that provides observability and security for cloud-scale applications

Hand-crafted lightweight Rest Client for testing APIs. Supports collections, environments, git collaboration and local storage.

Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIs—faster.

Status, performance and uptime monitoring for cron jobs, websites, APIs and more.

Code, test, and deploy synthetic monitoring at scale.