SkiaSharp is a cross-platform 2D graphics API for .NET platforms
PixiEditor is a Universal Editor for all your 2D needs
A modern, cross-platform, 2D Graphics library for .NET
A Windows-based viewer currently supporting CDR & 2D DXF files
A fast, self-contained, highly customizable Aseprite-to-Unity importer
An aseprite-file importer for unity written in C#
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
A virtual reality tool for mathematical modeling
A modern media player, wrote in C# & C++. Based on the Iris3D engine.
A rudimentary 2D isometric engine
Simple animation of a journey at light speed
object-based image analysis framework
An exceedingly easy-to-use pixel perfect orthographic camera script
.NET wrapper for the Irrlicht Engine
An STL model viewer, editor, and creator for manipulating STL files.
A resolution independent pixel perfect camera for Unity
XNA based game engine completely written in c#
Generates 2D layouts based on tree structures
A c# 2D Vector Graphics Library - and more.