Postwoman is a tool for http test. It's completely free for everyone. You can test you api without internet. At the same time, the data can also be synchronized to the cloud to realize cross terminal sharing. Postwoman supports post, get, XML, Josn and other tests, and supports environment switching (global variables). Postwoman has a perfect interface management system (postman.cn can be deployed on the intranet), and postwoman supports interface, document and other management. 

Data is stored locally, fast and can running without network. It can store historical debugging data.