Note: I've split these libraries along functional/reactive lines, but that's merely for convenience. The FRP libraries are more or less functional by definition.
- Underscore
- lodash + lodash/fp
- ramda.js
- rambda and rambdax - similar to Ramda, purports to have higher performance
- Two Pillars of Javascript — Pt. 2: Functional Programming
- Professor Frisby's Mostly Adequate Guide to Functional Programming
- The introduction to reactive programming you've been missing
- Fantasy Land Specification — Specification for interoperability of common algebraic structures in JavaScript
- Learn You a Haskell For Great Good
- Clojure for the Brave and True
- Functional Programming in Swift
- Want to get real deep into FP? Try The Journal of Functional Programming