icl
An enhanced Common Lisp REPL with terminal, browser, and Emacs interfaces, featuring syntax highlighting, visualization, and profiling.
What is icl?
ICL (Interactive Common Lisp) is a modern, feature-rich REPL environment for Common Lisp that significantly improves the interactive development experience. It provides a unified interface across terminals, web browsers, and Emacs, making Lisp programming more accessible and productive by offering enhanced editing, interactive visualization, and comprehensive tooling.
Common Lisp developers seeking a modern, interactive development environment with advanced REPL features, visualization capabilities, and cross-platform support. It is particularly valuable for developers working with multiple Lisp implementations (SBCL, CCL, ECL, etc.) or those integrating with Emacs via SLY/SLIME.
Developers choose ICL for its multi-interface REPL that works seamlessly in terminal, browser, and Emacs, its extensive built-in tooling for debugging, profiling, and visualization, and its extensible architecture that supports custom visualizations and AI integration. Unlike basic REPLs, ICL offers interactive data visualization, performance profiling with flame graphs, and a unified command system across all interfaces.
Overview
Interactive Common Lisp: an enhanced REPL
Use Cases
Best For
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