Repl

IPython is a powerful interactive shell for Python that provides enhanced introspection, syntax highlighting, tab completion, and magic commands for...

Murex is a modern shell and scripting language written in Go that extends traditional shell capabilities with type-aware pipelines, native support...

Molten is a Neovim plugin for interactive code execution using Jupyter kernels, designed for REPL-like and notebook-like workflows directly in the...

LFortran is a modern open-source Fortran compiler built on LLVM that enables interactive, exploratory code execution (similar to Python or Julia) and...

fq is a command-line tool and query language for inspecting, decoding, and transforming binary data formats — combining jq-like syntax with hexdump...

WebVM is a serverless Linux virtual machine that runs fully client-side in the browser via WebAssembly and HTML5, powered by CheerpX's...

PsySH is a runtime REPL (Read-Eval-Print Loop), interactive debugger, and developer console for PHP that enables real-time code execution and...

Gluon is a statically-typed, functional programming language written in Rust, designed specifically for embedding in host applications. It excels as...

Red is a programming language inspired by Rebol, designed for multiple paradigms (functional, imperative, reactive) from system programming to GUI...

Carp is a statically typed Lisp designed for performance-critical, interactive applications like games and real-time audio synthesis, offering...

C# REPL is a cross-platform command-line interactive shell for C# that enables rapid experimentation with the language, libraries, and NuGet...

Janet is a dynamically-typed programming language and bytecode VM designed for system scripting, automation, and embedding in C/C++ applications. It...

Zen C is a modern systems programming language that transpiles to C while adding high-level features like type inference, pattern matching, generics,...

Byebug is a feature-rich debugger for Ruby that provides stepping, breakpoints, call stack navigation, and REPL evaluation via a C extension built on...

Claude Code Rust is a Rust reimplementation of Anthropic's Claude Code tool, delivering a 2.5x faster startup and 97% smaller binary footprint while...

pry-byebug integrates byebug's step-through debugging capabilities into the Pry REPL, enabling line-by-line execution control, breakpoint management,...

alive-progress is a Python library for creating animated, real-time progress bars with throughput tracking, ETA calculation, and multi-threaded...