Please check out the Wiki for motivation and general overview: https://github.com/kennytilton/cells/wiki
No documentation other than the test suite, but ping me for help. I am starting on a port to Clojure/ClojureScript called MatrixCLJS, residing temporarily at TodoFRP MatrixCLJS
MatrixCLJS is pretty far along and in some ways exceeds Cells in capability and even has a benign issue fixed.
There is a pure Javascript version as well.