kitten VS retroforth

Compare kitten vs retroforth and see what are their differences.


A statically typed concatenative systems programming language. (by evincarofautumn)


This is a read-only mirror of the Fossil repository, made available via Git for your convenience. (by crcx)
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kitten retroforth
13 2
1,074 93
- -
1.2 0.0
about 1 year ago about 1 month ago
Haskell Forth
GNU General Public License v3.0 or later GNU General Public License v3.0 or later
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of kitten. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-07-11.


Posts with mentions or reviews of retroforth. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-07-17.
  • Why Concatenative Programming Matters
    2 projects | | 17 Jul 2022
    Its seen as bad practice to use anything but one argument per word.

    There's also quotations, retroforth[1] tends to use a prefix based system for indicating the type of the argument, c:put will print a character, s:put will print a string.

  • RetroForth 2021.4 Released
    1 project | /r/Forth | 27 Apr 2021
    Source is at or can be grabbed from Github at or at

What are some alternatives?

When comparing kitten and retroforth you can also consider the following projects:

JDK - JDK main-line development

jvm-parser - A Haskell parser for JVM bytecode files

mlatu - A declarative concatenative programming language

resin - Vector space index based search engine that's available as a HTTP service or as an embedded library.

haskell-exp-parser - Simple parser parser from Haskell to TemplateHaskell expressions

egison-quote - Quasi quotes for Egison expression

ast-monad - A library for constructing AST by using do-notation

language-dot - A library for the analysis and creation of Graphviz DOT files

gale - Strongly-typed, minimal-ish, stack-based development at storm-force speed.

raw-feldspar - Resource-AWare Feldspar