Tiddlywiki
Tiddlywiki is a unique open-source, single-file wiki designed to help you organize, capture, and share information effectively. It is a versatile personal notebook that allows you to create, organize, and navigate your notes in a self-contained HTML file. Tiddlywiki is highly customizable, enabling users to tweak layouts, styles, and functionality through plugins and scripts. It works offline and can be hosted online for collaboration or personal use. Whether you're creating a personal knowledge base, journaling, or managing projects, Tiddlywiki provides a flexible platform to meet your needs.