A collection of small applications and tools. Browse and access all available apps from this index.
红楼梦互动阅读器，包含章节导读、人物介绍、家族关系图谱与原文阅读。
An interactive, non-puzzle geometry environment for discovering geometric constructions through rigid body motion and invariance.
A tax optimization tool for British Columbia business owners to calculate the optimal salary vs. dividend mix, accounting for shareholder loans and capital gains.
A browser-based 2D skeletal animation tool. Upload any PNG, generate a mesh, rig it with pins, and animate using a timeline.