The first implementation of IPFS is written in Go, and it includes fully functional nodes, http gateways, and libraries, but they're also working on a node.js v

The first implementation of IPFS is written in Go, and it includes fully functional nodes, http gateways, and libraries, but they're also working on a node.js version (that's also compatible with browser environments) so that non-technical users can have ipfs sites "just work". (although it requires at least static content served from a "normal" http/html server)