BookMacster

Cross-Browser Syncing Bridge

Keep web browsers (Firefox, Chrome, Vivaldi, Opera, etc.) on your computer(s), tablet device(s) and smart phone(s) synced with the same internal bookmarks. Engineered for compatibility with Firefox Sync, Sign in to Google and Opera Sync.

Features

• Sync continuously among Firefox, Google Chrome, Vivaldi, Chromium, Chrome Canary, FirefoxDeveloperEdition.
• Sync automatically with iCab, Opera, OmniWeb, Epic, Roccat when these browsers quit.
• Easily organize with Tags, Hierarchy, or both.
• Engineered to play nice with Firefox Sync, Google Chrome's Sign In, and Opera Sync.
• Handles multiple User Profiles in Firefox and Chrome
• Verify bookmarks, fix redirects.
• Find and remove duplicates.
• Upgrade insecure bookmarks to https://.

One of the most convoluted UI designs I've ever seen for a OS X app. Loaded with features, which may very well be useful, but you'd never know just by reviewing.

[Edited by usharf, April 28]