I've used maestro in the past and liked it, very easy to get started and add decent coverage quickly.
Just wanted to share a project that I'm keeping a close eye on. I haven't actually used it yet but hoping to do so soon:
https://github.com/takahirom/arbigent
Just wanted to share a project that I'm keeping a close eye on. I haven't actually used it yet but hoping to do so soon: https://github.com/takahirom/arbigent