postStack 4+

postStack is a must have developer tool for building and testing API services over HTTP(S). Unlike other tools, postStack is cloud based. This allows you to access you data from any where you want to. Not just from your developer machine.

Features:

Organize your Api's into Projects, Groups and Sub Groups.
Control weither you want to track the history of a Api call, or you can just exclude certain pieces of it.
View past execution by you or other developers.
Ability to publish a version to the master repository.
Check out from the master repository.
View version of a Api.
Rollback to a prior version of a Api.
Share the execution of a Api for collaboration with other developers.
Support for GET, POST, PUT, DELETE, PATCH and HEAD.
Type ahead support for headers.

And much more....