Haskell

 Haskell  is a pure functional programming language.

IndieWeb Examples
Examples of indieweb community members who are using Haskell on their personal sites:


 * 's first engine, sweetroll 1, used to power unrelenting.technology

Libraries
Developed for Sweetroll:
 * http-link-header, a parser for the HTTP Link header
 * microformats2-parser, a parser for Microformats 2
 * gitson, a Git+JSON storage library
 * hs-duktape, bindings to duktape, a compact JavaScript engine
 * pcre-heavy, a usable regular expression library
 * indieweb-algorithms, implementations of algorithms like authorship

Other useful libraries:
 * xss-sanitize, removes any HTML tags that could cause xss attacks (microformats2-parser uses it by default)