Trilium is a hierarchical note-taking application that emphasizes rich content creation and organization capabilities. It allows users to create and manage notes in a structured manner, enabling them to build a personal knowledge base that can be easily navigated and searched. Trilium supports various content types such as text, images, and code snippets, making it versatile for different documentation needs. Users can also add tags, links, and customize the structure of their notes, fostering an effective way to organize information.

Additionally, Trilium provides features for collaboration, synchronization, and data privacy, as it can be self-hosted or run locally, giving users full control over their data. Its intuitive interface and powerful features make it suitable for individuals and teams looking for an efficient way to capture and retrieve information. With support for markdown and a built-in rich text editor, Trilium is designed to enhance productivity while ensuring that users can create a comprehensive repository of knowledge.