Growing article, with links to many related topics. [Wikipedia]

Language-OS based on CLOS, Self, Smalltalk; Smalltalk syntax; libraries inspired by Common Lisp, Dylan, Strongtalk (strong typing). Descriptions, programming manual, tutorials, summaries, bulletin board Swiki, CVS. [Open Source, LGPL]

Small, fast language inspired by Smalltalk, Self, Eiffel (design by contract); auto-cast static typing, multiple inheritance. Part of Isaac prototype-based OS. Description, downloads, library, benchmarks, code samples.

Small prototype-based high-level language, influences: Smalltalk (all values are objects), Self (prototypes), Eiffel (Design by Contract); allows system, low-level programming, compiler has means for late binding suppression, optimizing type predictio...

OO prototype-based, reflective language, based on only message passing, a key trait of OO languages; it allows late-binding polymorphism, the key trait making possible incremental modifying of programs. Descriptions, papers, implementations: Smalltalk...

Language with interactive development environment, supports multiple views per object, bytecode VM; was user programming environment of EO communicator; description, PDF manuals. By Mark Lentczner.

Brief description with many forum comments. [Slashdot]

By Rainer Blome. Alphabetized list with descriptions of, and links to, many prototype-based languages.

Was Poe: prototype inheritance language and OO virtual machine for building network-accessible programs for multiple programmers, users, agents. Persistence and garbage collection are automatic and transparent. [Open Source, GPL]

An article for PIE Developers magazine describing a technique for structuring a NewtonScript program using class-like objects.