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




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




Nuclino is a unified workspace where teams can bring all their knowledge, docs, and projects together in one place. It’s a modern, simple, and blazingly fast way to collaborate, without the chaos of files and folders, context switching, or silos.



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.

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.




Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.


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.




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.




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




Milanote is the most popular SaaS alternative to Hyperdraft.
Distraction-free note-taking app featuring categories for organization, Markdown formatting, favorites, and seamless integration with Nextcloud clients. Enables syncing across devices, API integration with third-party apps, offline access, and privacy-focused storage.




Combines AI-powered client portals, unlimited external accounts, internal workspaces, collaborative document editing, smart task management, and no-code knowledge bases with smart documents, supporting 2000+ embeds for streamlined project delivery and feedback.




Note taking open-source application aimed to have both a simple interface but keeping smart behavior.


