Zen Tabz vs OneTab
Both tools tame tab overload, but they solve different problems. OneTab collapses tabs into a list to cut memory. Zen Tabz saves whole sessions, tab groups, and pinned tabs into named collections you can restore. Here is how they compare.
Add to Chrome — freeComparison
| Feature | Zen Tabz | OneTab |
|---|---|---|
| Price | Free | Free (no signup) |
| Save tabs across all windows | Yes | Current window |
| Named collections or sessions | Yes | Folders and groups |
| Preserve Chrome tab groups | Yes | Not documented |
| Preserve pinned tabs | Yes | Not documented |
| Cross-device sync | Optional encrypted sync | Listed as “coming soon” |
| Bookmark import and export | Yes | Tab-list export/import only |
| Search saved tabs | Yes | Yes |
| Account required | No | No |
| Browsers | Chrome, Firefox | Chrome, Firefox, Edge, Safari |
Last reviewed: September 2026. OneTab features and pricing change; check their site for the latest.
Sources: one-tab.com, OneTab help.
Spotted something inaccurate? Email info@zen-tabz.com and we will correct it.
The honest breakdown
What OneTab does well
OneTab is a focused, mature extension with a single strong idea: convert a window of tabs into a list, then restore them one at a time or all at once. It is free, needs no signup, and its own site claims up to 95% memory reduction once tabs are parked in the list.
- Completely free with no account, and available on Chrome, Firefox, Edge, and Safari.
- Folders, groups, a quick list, stars, and tasks for organising saved tabs.
- Search inside the OneTab page, or from the address bar (type “11” then your term).
- Privacy-minded: OneTab states your tab URLs are never transmitted unless you deliberately use “Share as a web page”.
What Zen Tabz does differently
Zen Tabz treats the session as the unit, not the individual tab. One click saves every tab across every window into a named collection, and restoring brings the whole set back, including Chrome tab groups and pinned tabs in place. That structure is the main difference: OneTab flattens tabs into a list, while Zen Tabz keeps the arrangement.
- Named, restorable sessions you can keep and switch between, rather than a single running list.
- Preserves Chrome tab groups and pinned tabs when saving and restoring.
- Optional encrypted cloud sync is available now; OneTab lists encrypted cross-browser sync as “coming soon”.
- Bookmark import/export sits alongside saved tabs and sessions.
Which should you choose?
If you mainly want to collapse a heavy window, reclaim memory, and keep a simple list of links, OneTab is excellent and free, and it supports more browsers including Safari. If you juggle several projects and want each session back exactly as you left it, tab groups and pinned tabs included, Zen Tabz is built for that. The two can coexist: some people use OneTab as a quick parking lot and Zen Tabz for named sessions.
Frequently Asked Questions
- Is OneTab free?
- Yes. OneTab is free and requires no signup or registration, and it is available for Chrome, Firefox, Edge, and Safari.
- Does OneTab preserve Chrome tab groups?
- OneTab stores your tabs in its own list, including folders and groups. Its official help does not describe preserving native Chrome tab groups, so we describe that as not documented. Zen Tabz preserves Chrome tab groups when saving and restoring.
- Does OneTab sync across devices?
- As of this review, OneTab’s help page lists encrypted cross-browser sync and backup as “coming soon”. It is not something we could confirm as generally available. Zen Tabz offers optional encrypted cloud sync that is off by default.
- Can I use OneTab and Zen Tabz together?
- Yes. They are complementary: OneTab is a fast way to collapse a window into a list, and Zen Tabz is where you keep named sessions with their tab groups and pinned tabs intact.
Try Zen Tabz
Save whole sessions, keep tab groups and pinned tabs, and restore any session in one click. Free for Chrome and Firefox.