| What it does | Your open tabs, grouped, on every new tab
| Open, read, annotate and export local and web Markdown files in Chrome or Edge
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Open source
| Freemium
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| Pricing | Free, under the AGPL-3.0-or-later licence. No paid plans, trials or cards.
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| Key features | - Shows open tabs from every window grouped by site
- Close all tabs from a site in one click
- Close duplicate tabs in one press
- Merge windows into one
- Customizable briefing with news topics, markets, weather, calendar and to-do list
- Optional end-to-end encrypted sync between browsers
- No account required
- Instantly loads with no network requests on tab open
- Automatic stale new tab page closing
- Works completely offline after initial configuration
| - Folder browsing and file navigation with reading position memory
- Document outline and search across folder or document
- Highlights, underlines, and comments linked to source
- Diagram rendering including Mermaid, Graphviz, PlantUML and Vega-Lite
- Math rendering with KaTeX and syntax-highlighted code
- Multiple views as document, mind map, or presentation
- Export to HTML, Word, PDF, PNG, SVG and JPEG
- Customizable document themes and background skins
- Localized interface in 15 languages
- All processing and data stored locally on device
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| What makes it different | - Only tab manager that shows actual open tabs on the new tab page itself
- Completely private by design with no account, no tracking and no server storage
- Zero network delay when opening new tabs
- Optional sync is end-to-end encrypted so the server never sees your data
| - Works offline with no account required
- Renders technical Markdown inline including diagrams, math and code
- Multiple connected views of the same file as document, mind map or presentation
- Export to multiple formats without modifying the original Markdown
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 8 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 5 |
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| Citation Flow (Majestic) | 13 | 22 |
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| Referring domains (Majestic) | 3 | 39 |
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OpenTabs
Markdown Viewer