A "hierarchical spreadsheet" that is a great replacement for spreadsheets, mind mappers, outliners, PIMs, text editors and small databases.
Netherlands
EU
Organize projects with deeply nested tasks, multi-language support, and flexible XML storage. Streamline scheduling, customize printing with stylesheets, and collaborate efficiently on multiple projects, including IT and general GTD use, on Windows or Linux via WINE.
Australia
Dynalist is a web app that lets you break down and organize your thoughts in the format of lists.
United States
Plain text notepad with markdown support and todo list manager for Linux, Mac OS X and Windows, that works together with the notes application of ownCloud.
AustriaEU
Tailored for extensive writing, this tool offers flexible structure and organization, integrates project outlines, supports various formats, and allows reorganization through drag and drop, ensuring research materials are within reach for efficient work.
United Kingdom
Open-source software offering a hierarchical outliner, distraction-free editor, character management, plot tools, Snowflake method support, section multi-organization, customizable writing workflows, cross-platform availability, and export to standard formats.
FranceEU
Foam is a personal knowledge management and sharing system inspired by Roam Research, built on Visual Studio Code and GitHub.
Mendeley helps manage and share academic knowledge: Mendeley Desktop is free academic software (Windows, Mac, Linux) for organizing and sharing research papers and generating bibliographies with 1GB of free online storage to automatically back up and synchronize your library...
NetherlandsEU
Org mode is for keeping notes, maintaining TODO lists, planning projects, and authoring documents with a fast and effective plain-text system.
GermanyEU
A complete Getting Things Done (GTD) productivity system for desktop and mobile. Mind Like Water.
United States
Dendron is an open-source, local-first, markdown-based, note-taking tool built on top of VSCode. It supports all the usual features you would expect like tagging, backlinks, a graph view, split panes, and so forth.
Flexible note-taking and writing tool featuring advanced markdown with in-line images, cross-note links, live preview, hashtags, Focus Mode, plain text storage, iCloud sync, one-tap formatting, smart data recognition, and multiple export formats for portability.
ItalyEU
