Extended ML
- EML is a framework for specification and formal development of Standard ML programs. Description, publications, tool support, education resources.
- http://homepages.inf.ed.ac.uk/dts/eml/

TILT
- TIL-Two compiler; goal: make compiler for ML-family languages (SML'97, Caml Special Light, KML) that uses types throughout compiling to emit better code without losing safety or correctness; joint effort with Carnegie Mellon. Descriptions, papers, people,
- http://www.cs.cornell.edu/info/people/jgm/tilt.html

TILT Compiler
- Self-checking Standard ML compiler, uses Typed Intermediate Languages; while compiling, types are translated with code, type-checking occurs to check compile results; funded by NSF. Descriptions, license, mail list, downloads, links. Carnegie Mellon.
- http://www.tilt.cs.cmu.edu/

MetaML
- Metaprogramming ML, needs SML first; part of OGI Mustang Project for Staged Programming. Pacific Software Research Center; download, install instructions, links.
- http://www.cse.ogi.edu/pacsoft/projects/metaml/

Dependent ML: DML
- Conservative ML extension, has type system to enrich ML with restricted form of dependent types, to allow many interesting program properties: memory safety, termination can be captured in type system and thus be verified while compiling. Description, cod
- http://www.cs.bu.edu/~hwxi/DML/DML.html

Standard ML of New Jersey
- SML/NJ is a compiler and programming environment for SML, with associated libraries, tools, documents. Descriptions, news, downloads (Unix, Windows), literature lists, FAQs, links, contacts. [Open Source, Lucent]
- http://www.smlnj.org/

Poly/ML
- Standard ML full implementation: compiler and environment, has libraries for MS Windows, X Window. [Open Source]
- http://www.polyml.org/

Open Source Release of MLj
- SML to Java bytecode compiler, based on Persimmon's MLj.
- http://www.dcs.ed.ac.uk/home/mlj/

Moscow ML
- ML system for DOS, Linux, Windows.
- http://www.dina.kvl.dk/~sestoft/mosml.html

MLton
- Whole program optimizing compiler for Standard ML.
- http://www.mlton.org/

MLRISC
- Framework for customizable, retargetable and optimizing compiler back ends, written in Standard ML. Successfully retargeted to many architectures. Deals elegantly with special requirements imposed by execution model of different high-level, typed language
- http://cs1.cs.nyu.edu/leunga/www/MLRISC/Doc/html/

ML Kit
- Standard ML compiler.
- http://www.it-c.dk/research/mlkit/

The Alcool-90 Experiment
- Experimental ML extension with run-time overloading and type-based notion of modules, functors and inheritance. Large HTML text document.
- http://pauillac.inria.fr/~rouaix/papers/AlcoolExperiment/plan.html