I find Pow great on my Mac. It makes the Rails dev environment setup easy. Can I install it on my Ubuntu? I can't find any info about it. If not, is there anything like it for Linux?
Pow (specifically) cannot be installed on anything except a Mac at this time. It uses plists for launching and managing the firewall, and uses some OS X /etc/resolver trickery to resolve the domain names. See this post for a bit more detail.