This is teeline.online, a free, interactive learning resource for Teeline shorthand. It is developed by Frederick O'Brien, a software engineer and occasional journalist based in London. It's mainly a way of avoiding the revision he should be doing to reach 100 wpm.
The source code is publicly available on GitHub and the data at its core is available here. The site is built with Svelte and hosted on Netlify. The font is based on Fred's own handwriting - a nod to the project being partly inspired by the revision flash cards he made while studying for his own NCTJ diploma.
You can support the site's development by buying Fred a coffee, if you like, and don't be shy about getting in touch with any feedback or ideas. Several of its features were suggested by users.