The open-source workshop that rebuilds the browser tools Manifest V3 left behind.

Arbor keeps a live tree of your windows and tabs in the browser side panel. Close a branch and it stays in the tree until you want it back. Snapshots are written continuously, so a crash or a forced restart never costs you a session.

• Side-panel tree Windows, tab groups and tabs shown as a collapsible tree in the Chrome side panel. Drag to reorder or move between windows.
• Notes on any node Attach a note to a tab, a group or a window. Notes travel with the node when you save, restore or export.
• Close and save Closing a tab or window from the tree keeps it as a saved node. Restore a single tab or an entire branch with one click.
• Search Search titles, URLs and notes across open and saved nodes. Results are grouped by window.
• Crash-safe snapshots The tree is snapshotted to local storage on every change. After a crash, a recovery screen lets you review and restore the last good state.
• Import from Tabs Outliner Load a Tabs Outliner backup file and get the same hierarchy, notes and saved windows in Arbor.

Reroute redirects and rewrites URLs before they load. Write rules with wildcards or regular expressions, use capture groups and transforms, and check each rule against sample URLs before you turn it on. A built-in cleaner strips tracking parameters using the ClearURLs rule catalog shipped inside the extension.

• Wildcard and regex rules Match with simple wildcards or full regular expressions. Use capture groups in the destination and apply transforms such as lowercase, encode or decode.
• SPA and history-state redirects Rules also apply to navigations that never hit the network, such as single-page apps changing the URL with pushState.
• Tracking-parameter cleaner Removes utm_*, fbclid, gclid and hundreds of other tracking parameters using the ClearURLs rule catalog. The catalog ships inside the extension; nothing is downloaded at runtime.
• Per-site allowlist Exclude sites where redirects should never apply. Allowlist entries win over every rule.
• Rule tester Paste a URL and see exactly which rule matches, what the captures are, and the resulting destination, before the rule is enabled.
• Import from Redirector Import a Redirector rule export and get the same rules, one to one, including wildcards, regex, exclude patterns and resource types.

CookieSweep deletes cookies and site data when you leave a site or close a tab, unless the site is on your whitelist. It understands partitioned cookies, clears localStorage, IndexedDB and cache alongside cookies, and keeps a local activity log so you can see exactly what was removed.

• Cleanup on leave or close When the last tab for a site closes, or after a configurable delay, its cookies and site data are removed.
• Whitelist and greylist Whitelisted sites are never cleaned. Greylisted sites keep their data until the browser restarts.
• More than cookies Clears localStorage, IndexedDB, cache and service worker registrations for the site, not just the cookie jar.
• Partitioned-cookie aware Handles cookies partitioned by top-level site (CHIPS) correctly, so embedded third-party state is cleaned with the site that created it.
• Activity log A local log of every cleanup: which site, what was removed, when. Nothing leaves your browser.
• Import from Cookie AutoDelete Import a Cookie AutoDelete settings and expression export and keep your whitelist, greylist and options.