The HaskellWiki has assembled a comprehensive timeline documenting the evolution of monad tutorials from 1992 to 2007. This curated collection spans over 15 years of educational resources, starting with Philip Wadler's seminal "The essence of functional programming" paper that first introduced monads as a program structuring mechanism. The resource invites contributors to add new tutorials as they emerge, treating the list as a living reference for developers learning about monads.

The timeline reveals monads explained through an astonishing variety of metaphors - from containers and space suits to nuclear waste containers and monsters that devour values. Tutorials range from brief 15-minute introductions to comprehensive 22,600-word guides like "All About Monads" by Jeff Newbern. The collection includes implementations across multiple languages including Haskell, Lisp, Scheme, Perl, Ruby, and even Java, demonstrating monads' broad applicability beyond functional programming's home.

The collection traces monads from academic papers to practical programming guides. Phil Wadler's 1992 work established the foundational vocabulary (unit, bind, join) that persists today. Later tutorials like Martin Grabmüller's "Monad Transformers Step By Step" addressed advanced topics often missing from beginner resources. This timeline serves as both a historical record and a practical roadmap for developers seeking to understand one of functional programming's most influential abstractions.