[monos]

Ringo is fine.

The number of add-on frameworks is probably so small because Ringo came bundled with a web-framework. But it will be removed from the core within the next releases.

And additional frameworks for Ringo are already appearing, like https://github.com/hns/stick or the proprietary http://erbix.com platform

[mehi]

Erbix launched the first server-side JavaScript Marketplace (https://secure.erbix.com/marketplace). The apps and libraries within the first apps developed by Erbix team are GPLed. They also use many other open source libraries (check out the source code and app descriptions).

There's virtually no proprietary library in Erbix. The backend Single-Sign-On module will be launched openly soon.

Virtually any open sourced app on Erbix Marketplace will run on RingoJS as well.