Hubble.md
Hubble.md: A focused desktop Markdown workspace with search, comments, and file-based workflows. Ranked #182 of 214 in Note-Taking Apps by our editors (3.0/10); pricing: Free plan; best for desktop users working with Markdown files.
At a glance
- Editor score3.0 / 10
- PricingFree plan
- Best forDesktop users working with Markdown files
- Free planYes
- Paid fromFree
- Facts checked21 Sep 2026
Where it wins
- Free and open source across macOS, Windows, and Linux
- Markdown editing with shortcuts, slash commands, and frontmatter
- Full-text search, threaded comments, PDF, and image viewing
Where it doesn't
- Limited verified note-organization features
- Limited sharing and integration options
- Offline support is limited
Our verdict on Hubble.md
Hubble.md is a free, open-source desktop note-taking app built around Markdown files and HTML. It is aimed at people who want to write, browse, and search notes in a file-based workspace, as well as users who work with coding agents. Official desktop builds support macOS, Windows, and Linux. Markdown shortcuts, slash commands, file properties, and frontmatter support give the editor a structured writing workflow without moving notes out of the filesystem.
The strongest fit is its connection to an existing notes folder. Hubble.md can live-reload changes made by agents, while workspace browsing covers files and folders directly. Full-text search helps locate content across the workspace, and review comments with threaded replies support discussion on notes. The app also supports PDF and image viewing, plus building and viewing HTML-based apps from note folders. These features make it more than a plain editor for users whose notes include mixed file types or agent-generated changes.
Hubble.md keeps its scope narrow: Markdown files, desktop access, and file-oriented workflows are central. Its verified organization features are limited, and sharing, integrations, and offline support are also limited. That makes it a reasonable choice for desktop users who value open-source software, local Markdown files, and direct folder access. Users looking for broader collaboration, deeper note organization, or a wider integration ecosystem should choose a more expansive note-taking app instead.
Your product? Our editors can test Hubble.md in depth and publish a review, labelled as paid · from $149/mo →
Hubble.md pricing
Hubble.md fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Offline access | Not verified |
| Supported platforms | macOS, Windows, Linux |
| Note sharing | Not verified |
| Real-time collaboration | Not verified |
| Storage limit | Not verified |
| Integrations | Not verified |
| Deployment | Desktop |
| Platforms | Windows, macOS, Linux |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan |
| Website | hubble.md |
| Facts checked | 21 Sep 2026 |
Alternatives to Hubble.md
- Microsoft OneNoteA broad, collaborative note system with strong Microsoft integration and a capable free option.9.3
- NotionA flexible workspace for teams that want notes and knowledge bases alongside databases and collaboration.9.2
- EvernoteA broad note-taking workspace for organizing information, tasks, calendars, and documents.9.0
See all Hubble.md alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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