Free note-taking software

notetaking application

Kontact is a personal information manager (PIM) and groupware software suite developed by KDE. It supports calendars, contacts, notes, to-do lists, news, and email. It offers a number of inter-changeable graphical UIs (KMail, KAddressBook, Akregator, etc.) all built on top of a common core.

FreeMind is a free mind mapping application written in Java, which is further developed by the fork Freeplane. FreeMind itself was last updated in 2014. FreeMind is licensed under the GNU General Public License Version 2. It provides extensive export capabilities. It runs on Microsoft Windows, Linux, and macOS via the Java Runtime Environment.

270px|thumb|right|A standard tiddler edit dialogue box on TiddlyWiki 5.2.0

Org Mode (also: org-mode; ) is a mode for document editing, formatting, and organizing within the free software text editor GNU Emacs and its derivatives, designed for notes, planning, and authoring. The name is used to encompass plain text files ("org files") that include simple marks to indicate levels of a hierarchy (such as the outline of an essay, a topic list with subtopics, nested computer code, etc.), and an editor with functions that can read the markup and manipulate hierarchy elements (expand/hide elements, move blocks of elements, check off to-do list items, etc.).

Freeplane is a free, open source software application for creating mind maps (diagrams of connections between ideas), and electronic outlines. Written in Java, it is supported on Windows, Mac OS X and Linux, and is licensed under the GNU GPL version "2 or later".

GTK-based desktop wiki software written in Python

Gnote is a free and open-source desktop note-taking application written for Linux, cloned by Hubert Figuière from Tomboy. It uses a Wiki-like linking system to connect notes together. Gnote is part of the GNOME desktop environment, often filling the need for personal information management. The main principle is a notepad with a wiki-style interface. Words in the note body that match existing note titles automatically become hyperlinks, allowing for the management of large libraries of personal information, such as references to favorite artists that would then automatically be highlighted in

note taking and to-do application

Simplenote is a note-taking application with Markdown support. In addition to being accessible via most web browsers, cross-platform apps are available on Android, Linux, Windows, iOS, and macOS.

Logseq is a free and open-source, personal knowledge base and note-taking application which can store data locally. It supports both Markdown and org-mode syntax.