OmniOutliner is described as 'Start-to-finish writing app. Perfect for collecting information, outlining Big Ideas, adding structure to any sort of writing, and much more. From grocery lists to email drafts to long-form composition' and is a Note-taking tool in the office & productivity category. There are more than 50 alternatives to OmniOutliner for a variety of platforms, including Windows, Mac, Linux, Web-based and iPhone apps. The best OmniOutliner alternative is CherryTree, which is both free and Open Source. Other great apps like OmniOutliner are TreeSheets, Workflowy, Manuskript and Dynalist.
Hierarchical note-taking software that is free, open-source, cross-platform. Features include rich text, syntax highlighting, multi-level lists, embedded files, customizable interface, code execution, PDF export, spell check, images & tables, and comprehensive project management support.
A "hierarchical spreadsheet" that is a great replacement for spreadsheets, mind mappers, outliners, PIMs, text editors and small databases.
Offers limitless nested lists for outlining, instant sync on web and mobile, real-time collaboration, file and photo uploads, kanban boards, tagging, offline editing, hoisting for branch focus, content sharing, text highlighting, and Dropbox auto-backup.
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.
Dynalist is a web app that lets you break down and organize your thoughts in the format of lists.
Org mode is for keeping notes, maintaining TODO lists, planning projects, and authoring documents with a fast and effective plain-text system.
wikidPad is a Wiki-like notebook for storing your thoughts, ideas, todo lists, contacts, or anything else you can think of to write down. What makes wikidPad different from other notepad applications is the ease with which you can cross-link your information.
Working on a project, researching a topic or writing an article? Walling makes it easy to break down your ideas, refine them and visually organize them.
Focus on your words not the interface. Quoll Writer is a writing application that helps you focus on your words. Clean and uncluttered. Feature rich. Features are where you would expect them to be.
The powerful, full-featured Personal Information Manager for Windows offering Email, Synchronization, Portability, Network support, Android and iOS versions.
Tana's combination of simple concepts lets you build anything. Easily turn raw notes into tasks, bugs, follow-ups and more with Supertags. Everything in Tana is connected in a graph, so you can leave files and folders behind. Data flows to where it needs to be.
MyInfo is a personal information manager for Windows. It will help you capture, organize, edit and share ideas, documents, tasks, and web pages.
Netherlands
EU
United States
France
Germany
Australia
Estonia
Bulgaria
The thing I love about OmniOutliner is the fact that each row of data in the hierarchy can have multiple columns, which is very convenient UI for structured data. CherryTree doesn't support this.