TestingBot allows you to test your website and apps online. Hundreds of browser and device combinations are used to test your website and apps using cloud-based testing platform, you can perform automated and manual testing on your website and apps.
Integrating TestingBot with slack you can, send notifications in slack whenever a test succeeds/fails including the metadata (screenshot, url, success state, test platform), you can retrieve the most recent tests conducted with a set of slash commands.
It is very easy to use, very intuitive and well organised. The slack integration helps testing teams ease their work significantly.