


Ideon is described as 'Open-source, self-hosted alternative to tools like Heptabase and Kosmik, specifically designed for technical projects. It provides an infinite spatial canvas where users can organize information visually rather than in linear documents or folder structures' and is an app in the office & productivity category. There are more than 50 alternatives to Ideon for a variety of platforms, including Mac, Windows, Web-based, Android and Linux apps. The best Ideon alternative is Obsidian, which is free. Other great apps like Ideon are Joplin, Logseq, Anytype and Notion.



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.




Seamlessly integrates words, data, and team collaboration, eliminating the need to switch applications. Features include customizable views, real-time collaboration, full-text search, and calendar integration, empowering teams to scale and coordinate tasks efficiently with a WYSIWYG editor.




Minimalist productivity platform offers centralized notes, task management, meeting capture with audio summaries, inbox processing, and Markdown editing, all enhanced by AI prioritization, custom prompts, backlinks, and flexible workflows, supporting multiple methodologies.







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.

Silver Bullet is an extensible, open source, personal knowledge management system. Indeed, that’s fancy talk for “a note-taking app with links.” However, Silver Bullet goes a bit beyond just that.


TiddlyRoam is your open source external brain. TiddlyRoam allows you to quickly create your own wiki. You can add fragments of thoughts and findings whenever they come to you. TiddlyRoam will link them and help you spot the patterns.


Your team’s knowledge base Team wiki, documentation, meeting notes, playbooks, onboarding, work logs, brainstorming, & more….

Capture and plan projects efficiently with task management tools that integrate note-taking, voice recordings, and Google Calendar. Share with teams seamlessly, organize ideas visually, utilize instant syncing, and save web content directly for a comprehensive and intuitive management experience.




Widget Board is a productivity tool that lets you create custom boards with your favorite widgets such as tasks, notes, media, date & time, weather, calendar and so much more!.




Privacy oriented, without vendor lock in note organizer, todo list desktop application. Work offline with text, markdown and pdf files.



