I think each solution has its own advantages/disadvantages
here a list of SSJS solutions:
Aptana Jaxer:
sadly abandoned
Sitepoint Persevere:
based on rhino -
include JSDB, supports JSON Query -
by Kris Zyp, the author of JSON Schema
RingoJS:
based on rhino -
ex Helma NG successor of Helma which existed from long time ago -
multi-thread -
nice community -
great actor on CommonJS
Narwhal:
can work on either spidermonkey, V8, or webkit JavaScriptCore -
another great actor on CommonJS -
defined the JSGI API in the Jack Server
Joyent NodeJS:
based on V8
(fast) -
all is running in a single thread -
all the code must be written using callbacks -
lot of modules available via npm (Node Package Manager)
4D Wakanda:
based on Webkit JavaScriptCore aka SFX or Nitro (which has been faster than V8 and could be faster again) -
include an NoSQL Object oriented JavaScript datastore with a native REST API -
multi-threaded -
provides a studio with a debugger, a Model Designer, and a GUI Designer -
provides a Framework with Widgets directly bindable to the datastore and between each others
APE project: based on spidermonkey - a Push engine to synchronize in live data between many visitor browsers
10gen MongoDB: A NoSQL Document store allowing code in either Erlang & JavaScript (using spidermonkey)
Apache CouchDB: Another NoSQL Document store also allowing code in either Erlang & JavaScript (using spidermonkey)
See a Server-Side JavaScript presentation with some history, benchmarks, & descriptions
