X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=blobdiff_plain;f=lambda_evaluator.mdwn;h=aee3ad5499a51414105a01cca8f131c6a55ab16c;hp=78fc60cbdc0d7e7c365a1c2014117a9650b72378;hb=7803c3db3dd9142d0a49a24a43ed70cb4f9004ef;hpb=e17c03bd8ce5b051ce06e123d3ce65d6086591be

diff --git a/lambda_evaluator.mdwn b/lambda_evaluator.mdwn
index 78fc60cb..aee3ad54 100644
--- a/lambda_evaluator.mdwn
+++ b/lambda_evaluator.mdwn
@@ -120,6 +120,19 @@ The code is based on:
 *	[Oleg Kiselyov's Haskell lambda calculator](http://okmij.org/ftp/Computation/lambda-calc.html#lambda-calculator-haskell).
 *	The top-down JavaScript lexer and parser at <http://javascript.crockford.com/tdop/index.html>.
 
-Improvements we hope to add soon: the ability to reduce Combinatory Logic combinators and report the result as combinators, rather than in lambda forms.
+Improvements we hope to add:
 
+*	detecting some common cases of non-normalizing terms (the problem of determining in general whether a term will normalize is undecidable)
+*	returning results in combinator form (the evaluator already accepts combinators as input)
+*	displaying reductions one step at a time
+*	specifying the reduction order and depth
+*	allow other binders such as &forall; and &exist; (though these aren't interpreted as doing anything other than binding variables)
+
+Other Lambda Evaluators/Calculutors
+-----------------------------------
+
+*	[Peter Sestoft's Lambda calculus reducer](http://www.itu.dk/people/sestoft/lamreduce/index.html) Very nice! Allows you to select different evaluation strategies, and shows stepwise reductions.
+*	[Chris Barker's Lambda Tutorial](http://homepages.nyu.edu/~cb125/Lambda)
+*	[Penn Lambda Calculator](http://www.ling.upenn.edu/lambda/) Pedagogical software developed by Lucas Champollion, Josh Tauberer and Maribel Romero.  Linguistically oriented. Requires installing Java (Mac users will probably already have it installed).
+*	[Mike Thyer's Lambda Animator](http://thyer.name/lambda-animator/) Graphical tool for experimenting with different reduction strategies. Also requires installing Java, and Graphviz.