Goliath - Goliath is an open source version of the non-blocking (asynchronous) Ruby web server framework powering PostRank.
Ramaze - Ramaze is a very simple and straight-forward web-framework.
LXQt - The LXQt team is proud to announce the release of qtermwidget and qterminal, both in version 0. 8. 0. Read more..
Cuba - Cuba is a Ruby microframework for web development.
LXDE - Why will you like it? Less resource needs. You can use it on your less-pricey embedded board or salvaged computer. Component-based design. Don't want something in LXDE, or you don't want to use LXDE but only part of it?
Scorched - Scorched is a generic, unopinionated, DRY, light-weight web framework for Ruby.