OpenCAN is a software platform for interacting with various Controller Area Network (CAN or CANbus) devices. It provides an abstract C++ interface that can be used to control CAN devices. Support for specific devices can be written as plugins, and then loaded through a simple API call. Each component is cross-platform, enabling the efficient development of CAN software on Windows, Linux, and Mac OS X.
Hybrid HTTP API Tester is a general purpose API tester GUI. You can specify a URL and send GET or POST requests to it as a client with an interface allowing you to set up a database of API commands and their parameters. It is useful for probing 3rd party APIs or building your own.