See also: my main website.

• Data Science for Mathematicians book website (repo, website)
• How to Data: math, stats, and data recipes, in code form (repo, website)
• Course notes for MA346 Fall 2020 (repo, website)
• DataFrame Animations (repo, website)
• Clustering for the NCAA, code and data to accompany a paper (paper, repo)

• Group theory visualization
  • Group Explorer 3.0 ⭐️ great web app built mostly by Ray! ⭐️ (repo, website, book)
  • ge-lib accesses Group Explorer from the command line or from node.js (repo)
• Logic
  • Model games, for teaching quantifiers in intro logic course (repo, website)
  • Second-order matching algorithm for OpenMath expressions, great tool built mostly by George (repo, docs)
  • The Lurch Project is undergoing a major redesign; its old version has a separate website.
• GAP packages
  • Access Group Explorer's visualizations from within GAP (repo, manual)
  • Generate JavaScript-based visualizations from the GAP REPL or from Jupyter (repo, manual)
  • Visualize semigroups (repo, manual)

• Math of Computer Graphics textbook website (repo, website)
• A partial OpenMath implementation in JavaScript (repo, docs)
• jsfs, a small filesystem in browser LocalStorage (repo)
• A simple course management system for RStudio Server Pro instances (repo, paper)