I Made a Lisp
Hi all, powerful open-source Lisp implementations are a dime a dozen, why not try JMurmel instead? The language is inspired by Common Lisp, except it's a Lisp-1, and it is mostly a subset of CLtL-1. Jmurmel can be used standalone with or without the Repl, for "#!"-style hashbang scripts or embedded in a Java program. It features [documentation for the core language](https://jmurmel.github.io/murmel-langref.html) as well as [documentation for the default library](https://jmurmel.github.io/mlib.html), a REPL, an interpreter, a compiler, macros, backquotes,…
I Made a Lisp launched on January 1, 2024 with 7 votes, #1,798 of 4,437 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 2 years on.
What it does
A standalone or embeddable JVM based interpreter/ compiler for Murmel, a single-namespace Lisp dialect inspired by Common Lisp - mayerrobert/jmurmel
In the maker’s words, at launch
Hi all, powerful open-source Lisp implementations are a dime a dozen, why not try JMurmel instead? The language is inspired by Common Lisp, except it's a Lisp-1, and it is mostly a subset of CLtL-1. Jmurmel can be used standalone with or without the Repl, for "#!"-style hashbang scripts or embedded in a Java program.…
Does a similar job
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Interactive Common Lisp: An Enhanced REPLDec 2025 · github.com · ▲101I created this because sometimes I want more than rlwrap but less than emacs. icl aims to hit that middle sweet spot. It's a terminal application with context-aware auto-complete, an interactive object inspector, auto-indentation, syntax colouring, persistent history, and much more. It uses sly to communicate with the child lisp process and aims to be compatible with any sly-supporting implementation. I hope others find it useful!
- IWI wrote a technical history book on LispFeb 2026 · berksoft.ca · ▲252
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