LibreCAD is a cross-platform 2D CAD program written in C++17. It can read DXF/DWG files and can write DXF/PDF/SVG files. It supports point/line/circle/ellipse/parabola/spline primitives. The user interface is highly customizable, and has dozens of translations.

2D skeletal animation runtimes for Spine.

Game engine

Simple Ants simulator

C++ implementation of Lie Groups using Eigen.

A complete and cross-platform game engine designed for flexibility, performance, and fast-iterations.

This is the Official source code repository of Synfig Studio animation software

A small C++11 header-only library for Lie theory.

QCAD - The Open Source 2D CAD. QCAD is a cross-platform CAD solution for Windows, macOS and Linux. It supports the DXF format and optionally the DWG format (through a proprietary plugin).

A lightweight 2D graphics library for rendering texts, geometries, and images with high-performance APIs that work across various platforms.

2D Game Engine with Lua Scripting made on top of SFML !

Friction Graphics

Basic cloth simulation using Verlet integration

🎮 · Jazz² Resurrection: Native C++ reimplementation of Jazz Jackrabbit 2

A really fast C++ library for Delaunay triangulation of 2D points

2D polyline library for offsetting, combining, etc.

open source MMORPG game

Connected components on discrete and continuous multilabel 3D & 2D images. Handles 26, 18, and 6 connected variants; periodic boundaries (4, 8, & 6)

A tiny, single-header <canvas>-like 2D rasterizer for C++

C++ header-only graphing and data visualization with Modern OpenGL