OneTab vs Uncluttr: Which Tab Manager Is Better in 2026?
Uncluttr and OneTab both tackle the problem of browser tab overload, but they take fundamentally different approaches. Uncluttr keeps your tabs alive in an organized sidebar with AI grouping, while OneTab converts them into a static list. Here's how they compare across features, usability, and value.
What Is OneTab?
Convert all your tabs into a list to save memory
OneTab is a veteran tab manager (since ~2013, 2M+ users) that collapses all open tabs into a list with one click, saving up to 95% memory. The recent v2 rewrite added folders, a quick list sidebar, search, tasks/stars, and dark mode. Cloud sync with E2E encryption is announced as coming soon. Fully local and privacy-focused. Works on Chrome, Firefox, and Chromium browsers.
Pros
- Completely free with no limits
- Dead-simple one-click operation with near-zero learning curve
- Strong privacy — all data stored locally, no telemetry
- 2M+ users, 4.5★ rating, Chrome Featured badge
- Works on Chrome, Firefox, Brave, Opera, Vivaldi
Cons
- Notorious for users losing all tabs on browser crashes or reinstalls
- v2 UI redesign is polarizing, many reviews prefer the old minimal interface
- Becomes sluggish with thousands of saved tabs
- No active tab management, tabs are fully closed until manually restored.
- Uninstalling the extension deletes all stored data with no recovery
What Is Uncluttr?
Sidebar-first tab manager with AI grouping
Uncluttr is a sidebar-first tab manager that uses AI to automatically group your tabs, suspend inactive ones to save memory, and persist your workspaces across sessions. It works with Chrome, Edge, Brave, and all Chromium browsers.
Pros
- AI-powered automatic tab grouping
- Automatic tab suspension saves memory
- Workspace persistence across sessions
- Sidebar interface keeps tabs accessible
- Free to use with generous limits
- Works across all Chromium browsers
Cons
- No Firefox support
- Requires Chromium-based browser
Key Differences
Tab Management Philosophy
Uncluttr keeps your tabs alive and organized in a sidebar, so you can access them without restoring. OneTab converts tabs into a static list, effectively closing them until you choose to reopen.
Automatic vs Manual Organization
Uncluttr uses AI to automatically group related tabs by topic, project, or domain. OneTab provides no automatic organization — you manually manage your saved tab lists.
Memory Management Approach
Both reduce memory usage, but differently. OneTab closes tabs entirely. Uncluttr suspends inactive tabs while keeping them in your sidebar, so they're one click away without consuming resources.
Workspace Persistence
Uncluttr persists your tab groups and workspaces across browser sessions and crashes. OneTab saves lists but doesn't maintain the context of your working environment.
Feature Comparison
| Feature | OneTab | Uncluttr |
|---|---|---|
| AI Tab Grouping | ✗ | ✓ |
| Automatic Tab Suspension | ✗ | ✓ |
| Sidebar Interface | Quick List only | ✓ |
| Multiple Workspaces | ✗ | ✓ |
| Session Save & Restore | Basic | ✓ |
| Tab Search | Address bar only | ✓ |
| One-Click Tab Save | ✓ | ✓ |
| Tab Deduplication | ✓ | ✓ |
| Drag & Drop Organization | ✓ | ✓ |
| Firefox Support | ✓ | ✗ |
| Cloud Sync | ✗ | Coming soon |
| Share Tabs as Web Page | ✓ | ✗ |
Verdict
Uncluttr is the better choice if you want your tabs to stay accessible and automatically organized. Its AI grouping, sidebar interface, and workspace persistence make it a true tab manager rather than just a tab saver. OneTab wins on pure simplicity — if all you need is a quick way to dump tabs and free up memory, it does that job well with zero learning curve.