An open source re-implementation of Caesar III

A modern port of Turbo Vision 2.0, the classical framework for text-based user interfaces. Now cross-platform and with Unicode support.

Neuralisp is a modular machine learning framework for Common Lisp, focused on deep learning models. It offers a high-performance tensor library, various neural network layers, activation functions,…

Python-based tool for downloading all your GOG.com game and bonus collections to your local computer for full offline enjoyment.

MIT CADR simulator

PCem

Snabb: Simple and fast packet networking

UOClassic client Razor scripts for UO outlands

A lightweight UI for using the Parachute testing framework in LispWorks

xBaK is a fan-made remake of "Betrayal at Krondor"

luajit io framework

An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Cervantes, Kindle, Kobo, PocketBook and Android devices

Thread-agnostic Actors in Common Lisp

Keyboard handler for gnu-apl on Linux

An open source re-implementation of Caesar III

The Serious Interactive Astronomical Software Ephemeris

Quake/Hexen 2 Map compiling tools - branch of http://disenchant.net/utils

ECL + IMGUI = IMCL

A quicklisp graphical interface

Cross-Platform Level Editor

MUD client for dragonrealms.

Fast C++ logging library.

An implementation of the Language Server Protocol for Common Lisp

Open source recreation of Daggerfall in the Unity engine

main ezQuake source code base

Jane Street Capital's standard library overlay

Alternative reading application for the PocketBook eReaders based on Linux.

The APL programming language (a subset thereof) compiling to Common Lisp.

Nyxt - the hacker's browser.

Cross-platform IDE for Dyalog APL