Postman is a REST client for testing web services. Available as a standalone application for Windows, MacOS, and Linux and as chrome extension, it is a must-have tool for developers working with Web API.
Opera Neon is the new “concept” browser released by Opera Software. It is not meant as a replacement to the same company “Opera browser”, but as a project to rethink the way browsers should be. The idea of this release is to put this new ideas to test, and hopefully those that prove to be more useful will be included in the Opera's standard browser.