backbone.js+jQuery+ROR+Mongo I find this selection easy to use an powerful. backbone.js+jQuery has a lot of adoption and strong community, so it's easy to find

backbone.js+jQuery+ROR+Mongo I find this selection easy to use an powerful. backbone.js+jQuery has a lot of adoption and strong community, so it's easy to find answers and additional components. ROR got strong community and language. Almost every functionality is available as a gem with code published on github.