Yes it is. Unlike viraptor I've been using Coro (http://search.cpan.org/dist/Coro/) successfully in production without any hitches and have services (including web apps) that are still running after 2 years without a reboot.

PS. For my Coro webapps I use Continuity (http://search.cpan.org/dist/Continuity/) & Squatting (http://search.cpan.org/dist/Squatting/)