Ribbon is an algebraic effects language in the lineage of Koka and Effekt, striking a new balance between high level programmer experience and low level systems access by adapting influences from the imperative world, inspired by a history in game development.

Focal points of the design include:

• Performance-friendly effect handlers
• Structured allocation / allocator strategies
• Embedding into other applications
• Strong static types with full inference
• Polymorphism for structural data and procedures
• Deep extensibility in the style of Lisp and Terra