Multi-multi paradigm language, includes constraint based programming.
Some of them are not necessarily up-and-coming but rather out-and-going. Oz is interesting, but it seems to be dying. Some like Reia are making slow progress. Curry is more of an academic language. io is probably the most up-and-coming so to speak.
Cobra (http://cobra-language.com/), a python derivative that also an up and coming language. Love the syntax refinements, the built in unit-testing, contracts, etc... all around a great language.
Reia is currently my wet dream language, similar to Ruby, and does concurrency(buit on top of BEAM for Christs sakes). And then you read the small print and learn that it's not available as a download. :<
* io : http://www.iolanguage.com
* Reia : http://wiki.reia-lang.org * Curry : http://www-ps.informatik.uni-kiel.de/currywiki * Oz/Mozart : http://www.mozart-oz.org Some of them are not necessarily up-and-coming but rather out-and-going. Oz is interesting, but it seems to be dying. Some like Reia are making slow progress. Curry is more of an academic language. io is probably the most up-and-coming so to speak.