sleek is an open-source (FOSS) todo manager based on the todo.txt syntax. It's available for Windows, MacOS and Linux.
Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux




Notational Velocity is described as 'Mouseless application for storing and retrieving notes' and is a popular Note-taking tool in the office & productivity category. There are more than 100 alternatives to Notational Velocity for a variety of platforms, including Windows, Mac, Linux, iPhone and Android apps. The best Notational Velocity alternative is Notesnook, which is both free and Open Source. Other great apps like Notational Velocity are Zim, Trilium Notes, CherryTree and Todoist.
sleek is an open-source (FOSS) todo manager based on the todo.txt syntax. It's available for Windows, MacOS and Linux.




Ultra-ergonomic note app for Windows designed for efficient text capture from any application, file and image attachments, cross-device synchronization, hierarchic tagging, full-text search, encryption of notebooks, automatic backups, and offline use for enhanced safety.




RedNotebook is a graphical diary and journal helping you keep track of notes and thoughts. It includes a calendar navigation, customizable templates, export functionality and word clouds. You can also format, tag and search your entries.




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.

Milanote is an easy-to-use tool to organize your ideas and projects into visual boards.




Web-based tool for integrating text, images, audio, and video with syncing across devices, real-time collaboration, handwriting input, AI-powered summaries, checklists, scanning, reminders, search in handwritten notes, and advanced organization.




As easy to use as a word document or bulleted list, and as powerful for finding, collecting, and connecting related ideas as a graph database. Collaborate with others in real time, or store all your data locally.

Roam Research is the most popular commercial alternative to Notational Velocity.
Note taking open-source application aimed to have both a simple interface but keeping smart behavior.



KeyNote NF is a flexible, multi-featured tabbed notebook, based on Windows standard RichEdit control. It's always accessible with a single keypress, even if you work in another application.




Organize tasks with todo.txt specification support, including parsing, creating, and editing lists. Features built-in help, search, filtering, and compatibility with open plain text files, making it accessible for newcomers seeking an easy task manager.


Efficient hierarchical information manager for Windows, offering note storage in a single file with customizable tree structures, password protection with 1800-bit encryption, instant search, a rich text editor, multiple language support, and portable use without installation.




Use Notes to capture a quick thought, create checklists, sketch ideas, and more. And with iCloud, you can keep your notes up to date across all your devices.



