Hammock: Save & Snooze Tabs

Save all your tabs into one tidy list with a click. Private, fast, offline - your tabs never leave your browser.

Hammock turns a window full of tabs into one tidy list, then brings the tabs back when you need them. Click the toolbar icon and every ordinary tab in the current window is saved and closed. Your list opens with the tabs grouped together, newest group first. No account, no server, no telemetry: the list is stored by your browser on your computer. Hammock is built in Rust and compiled to WebAssembly. The entire extension is bundled — it has no remote code, no web fonts, no remote images, and makes no network requests. Free. If Hammock saves you time, you can buy me a coffee. SAVE One click saves all ordinary tabs in the current window as a new group. Save only this tab, all tabs except this one, tabs to the left, tabs to the right, highlighted tabs, or all tabs from every window (one group per window). Right-click a page or a link to save that page, that link, or a whole window. Native Chrome tab groups are preserved: group titles and colours are saved with your tabs. Pinned tabs and browser-internal pages are skipped by default; both can be included in settings. Excluded sites are never saved. Add an exclusion from the right-click menu or the popup. Save with deduplication off, within the new group, or against everything already saved. Too-many-tabs guard: optional toolbar badge monitors open tab count and offers a one-click prompt to stash the oldest idle tabs when crossing your threshold. If nothing can be saved, nothing closes and a message explains why. RESTORE Click a tab title to reopen it in the background and remove it from the list. Ctrl-click or middle-click reopens a tab without removing it. Restore a whole group, or restore everything at once. Restore into the current window or into a new window, and choose whether groups stay after a restore. Native tab groups are automatically recreated with their original names and colours on restore. Pinned state is preserved when tabs are restored. A confirmation is shown before restoring more than 50 tabs (threshold configurable). ORGANISE: FOLDERS, TAGS, WORKSPACES, RULES Name groups, star the important ones, and lock groups so their tabs are never removed by a restore and the group cannot be deleted. Folders with a sidebar view of All, Starred, Unfiled, and each custom folder. Tags: add up to 20 tags to individual tabs and groups. Filter by tag from the sidebar tag cloud or with the tag: search operator. Workspaces: save a window's tabs as a named workspace and switch between workspaces seamlessly with open-before-forget safety. Auto-filing rules: create rules that automatically tag matching tabs or move groups to designated folders based on host, URL, or page title, complete with live match previews. Notes on groups and on individual tabs. Mark any tab as a task and tick it off when done. Drag tabs within a group, move tabs between groups, reorder groups, or drop a group into a folder. Multi-select tabs with Ctrl-click and Shift-click for bulk restore, delete, tag, or move. Sort a group's tabs by title, domain, URL, or date added. Merge one group into another. Per-group collapse state, and groups with many tabs show the first 30 with "Show n more". AUTOMATE: AUTO-STASH AND SNOOZE Auto-stash & hibernate: automatically stash idle tabs after a configurable time into daily groups, or hibernate tabs to free system memory, respecting pinned, audible, active, and grouped tab exclusions. Snooze: snooze tabs, selected rows, or entire groups until later today, this evening, tomorrow, next week, or a custom date and time. Snoozed items wake up automatically with a local notification. FIND: SEARCH, ADDRESS BAR, SIDE PANEL Search as you type across tab titles, URLs, tab notes, group titles, and group notes. All words must match, in any order, case-insensitively. Operators for host (site:example.com), tags (tag:name), folders (folder:name), starred groups, locked groups, tasks, done tasks, quoted phrases, and negation. Address-bar search: type rt <query> into the browser address bar to instantly search saved tabs and restore them directly from the omnibox. Side panel: keep Hammock open beside your web pages with the native side panel (Alt+Shift+P) for quick search, drag-and-drop, and tab restoration without leaving your page. Command palette (Ctrl+K) runs actions and jumps to any group, tab, or view. INSIGHTS & CLEANUP Insights view: view weekly tab-saving trends (12-week chart), top domains, total saved vs. restored tabs, oldest unrestored tabs, and group age distributions. Cleanup: identify stale tabs untouched for months, find exact duplicate tabs across groups, and clean up near-duplicates by stripping tracking parameters (utm_*, fbclid, gclid), with one-click archive to trash. SAFETY & BACKUPS: TRASH, UNDO, IN-BROWSER, DOWNLOADS, FOLDER Deleted tabs and groups go to Trash first, with their position, and can be restored for 30 days (retention configurable, including keep forever). Undo the last change from the toast or with Ctrl+Z. In-browser automatic snapshots kept in local extension storage. Auto-backup to Downloads: automatically saves periodic backup files to your Downloads/Hammock Backups directory so your data survives even if the extension is uninstalled. Backup to a chosen folder: pick any local folder or synced cloud folder (Dropbox, Google Drive, OneDrive) using the File System Access API for automatic off-browser backups. Optional encryption: secure backup files with Argon2id and AES-256-GCM using your personal passphrase. Unreadable saved data is quarantined and can be downloaded, while safe backups can be restored. Safe deletion safeguards require typing DELETE before wiping data. IMPORT AND EXPORT Import the text export produced by OneTab: paste it or choose the file, preview the groups and tabs, then merge or replace. Group boundaries are preserved. Import plain URL lists, JSON backups, and Netscape bookmarks HTML (each folder becomes a group). Export the whole list or selected groups as OneTab text, JSON, a self-contained HTML page, Markdown, or CSV. The HTML export is a local file with no scripts and no upload. Encrypted backups: export and import passphrase-protected backups between computers safely. PRIVACY Everything stays in the browser's local extension storage on your computer. No account. No analytics. No advertising. No third parties. No network requests. Tab URLs, titles, favicons, notes, workspaces, and settings are never transmitted anywhere. Removing the extension, or using "Delete everything" in settings, deletes the saved data. The privacy policy is published at the URL in the listing and is included in this package. KEYBOARD SHORTCUTS Alt+Shift+S — save all tabs in the current window. Alt+Shift+T — save only the current tab. Alt+Shift+L — open the Hammock list. Alt+Shift+P — open the Hammock side panel. Address bar: type rt <query> to search saved tabs. On the list page: / focuses search, Esc clears search or selection, Ctrl+Z undoes, Ctrl+B toggles the sidebar, and Ctrl+K opens the command palette. SETTINGS Customize toolbar click behaviour, list opening preferences, eligible tabs, deduplication, restore targets and layout, confirmation thresholds, startup behaviour, context menus, badge count, themes (light, dark, system), accent colour, favicons, trash retention, auto-stash timers, backup schedules and destinations, auto-filing rules, and support link visibility. Hammock is a free extension for Chrome and Edge (Manifest V3). It requires Chrome 120 or Edge 120 and later.