Rook is also a good option. I've built several apps with it. It reminds me of sinatra. https://docs.google.com/presentation/d/1AT8nQo6jrZ9SwPgdwqkHZI_2SeqGQormy

Rook is also a good option. I've built several apps with it. It reminds me of sinatra. https://docs.google.com/presentation/d/1AT8nQo6jrZ9SwPgdwqkHZI_2SeqGQormy-EWWmm_rlk/edit https://docs.google.com/presentation/d/1AT8nQo6jrZ9SwPgdwqkH... and http://cran.r-project.org/web/packages/Rook/Rook.pdf http://cran.r-project.org/web/packages/Rook/Rook.pdf