cherrytree
A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file. Written by Giuseppe Penone (aka giuspen) and Evgenii Gurianov (aka txe). The user manual online html and downloadable ctb written by Ellie Borden. Syntax highlighting supporting several programming languages. Embedded files handling: insertion in the text, save to disk. Hyperlinks associated to text and images (links to webpages, links to nodes/nodes + anchors, links to files, links to folders). Cross application copy/paste (tested with libreoffice and gmail): supported single images, single codeboxes, single tables and a compound selection of rich text, images, codeboxes and tables. Copying a list of files from the file manager and pasting in cherrytree will create a list of links to files, images are recognized and inserted in the text.
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WackoWiki
WackoWiki – Small, lightweight, handy, expandable, multilingual Wiki-engine. It's designed for speed and extensibility. WackoWiki is completely free and open source, and it is BSD licensed. Includes a WYTIWYG editor, easy installer, section edit, thumbnail creation, many localizations, RSS autodiscovery, Links can be CamelCase or freely formed links using an intuitive two-character markup. Compatible with PHP 8.0 - 8.5 and MariaDB / MySQL / SQLite. On-the-fly correction of punctual typos & spec. characters. Access control through per-page access control lists. Automatic table of contents generation. Page watching & email notification on changes/comments. Powerful diff between revisions.
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KeepNote
With KeepNote, you can store your class notes, todo lists, research notes, journal entries, paper outlines, etc in a simple notebook hierarchy with rich-text formatting, images, and more. Using full-text search, you can retrieve any note for later reference. KeepNote is designed to be cross-platform (implemented in Python and PyGTK) and stores your notes in simple and easy to manipulate file formats (HTML and XML). Archiving and transferring your notes is as easy as zipping or copying a folder. In KeepNote, you can customize the icons that appear next to your notes. To change a note's icon, right-click on the note and locate the Change Icon menu. You will then see a list of icons to choose from (see left screenshot below). You can use this feature to mark notes that are your favorite (heart), important (start, exclamation mark) or done (check mark).
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Notion
Notion is a highly versatile and collaborative workspace designed to help individuals and teams manage documents, wikis, projects, and tasks efficiently. It offers a wide array of features like customizable views for workflows, project tracking, and document creation, all within a single platform. Notion allows users to create a shared knowledge base, organize notes, and collaborate seamlessly on content creation. Additionally, its built-in AI assistance features help users summarize, write, and instantly search for relevant content, significantly enhancing productivity. The platform integrates effortlessly with other popular apps such as Slack, Google Drive, and Trello, providing a seamless experience for teams looking for an all-in-one platform to manage their projects, goals, and knowledge in an organized, collaborative environment.
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