TiddlyWiki

It is a JavaScript‑based personal web notebook that stores content as a collection of small, interlinked entries called tiddlers. Users can run it as a single HTML file that runs entirely in the browser, or as a more feature‑rich Node.js application that supports server‑side storage and extensions. The interface and functionality are built with WikiText, allowing the whole UI to be customized and extended through editable text.

The software targets anyone who wants a self‑hostable, non‑linear way to capture notes, ideas, and documents without reliance on external services. Its open‑source BSD‑3‑Clause license and lack of subscription or tiered pricing make it suitable for individuals, hobbyists, and developers who wish to adapt the notebook to their own workflows.

Distinctive aspects include the single‑file deployment model, full client‑side operation, and a highly configurable UI where even core components are written in the same markup language used for content. A vibrant community provides forums, mailing lists, and GitHub resources for support and contribution.