Algebraic data types for C99
Java 8 annotation processor and framework for deriving algebraic data ty...
Functional Programming Unorthodoxly Adjusted to Client-/Server-side Java...
Monad, Functional Programming features for Golang
? A research programming language on top of C macros
Fast and memory-efficient immutable collections and helper data structures
Algebraic data types for Python (experimental, not actively maintained)
Recursive Variant: A simple library for Recursive Variant Types
ADT sum type in typescript
A type-safe and space-efficient sum type for C# (comparable to discrimin...
ftor enables ML-like type-directed, functional programming with Javascri...
A code generator enabling sum-types in Dart
Functional Enum type / Sum type for javascript with simple pattern matching
A namedtuple-style library for defining immutable sum types in Python.
Track periodic goals — a sample iPhone app