pattern-matching topic
bem-xjst
bem-xjst (eXtensible JavaScript Templates): declarative template engine for the browser and server
matchpy
A library for pattern matching on symbolic expressions in Python.
egison-ruby
A Ruby gem for non-linear pattern-matching with backtracking
moshmosh
An amazing syntax extension system in pure Python, the way to coding efficiency.
kaleidoscope
Statically-checked inline matching on regular expressions in Scala
motif
Scala-like pattern matching for Java 8
librxvm
non-backtracking NFA-based regular expression library, for C and Python
nanomatch
Fast, minimal glob matcher for node.js. Similar to micromatch, minimatch and multimatch, but without support for extended globs (extglobs), posix brackets or braces, and with complete Bash 4.3 wildcar...
narc-rs
(WIP) Dependently-typed programming language with Agda style dependent pattern matching
typy
A fragmentary bidirectional type system as a Python library