There is support for Ruby, Python, PHP, Java, Node, Go runtimes.
What's nice about it is that applications run unmodified.
uWSGI really is the swiss army toolchain for web operations.
Following is a general response for similar questions.
I pretty sure it's possible to do the same thing as trusted-cgi by combining several tools: cron + nginx/nginx-unit + some deployment + stats + whatever.
It could be faster, more flexible, but... I am not sure that I will personally want to setup it each time for new boxes. Or write auto-install scripts. I would like to write logic, not make environment.
Benefits trusted-cgi are: low resource usage (very low), easy setup, web UI and focus on including several features in one package.
It's possible to find better solutions for each parts, but I would like hear product that providing complete solution instead of providing "bricks". I am a big fan UNIX way, but sometimes we need an assembled thing, instead of another piece of constructor.