http://apiary.io/

Collaborative design, instant API mock, generated documentation, integrated code samples, debugging and automated testing.

multi-mechanize http://multimechanize.com https://pypi.python.org/pypi/multi-mechanize

http://www.haoservice.com/ 你去这上面看看

www.apemesh.com
使用cdif实现API的自动化测试，文档自动生成。