BookMacster for Mac is a bookmarks manager for your macOS, which plays nicely with iCloud, Sign In to Chrome, and Firefox Sync. It can be used in three ways, or all three:

• Manage Browser Bookmarks. Add alphabetizing and tagging. Verify, fix dupes, consolidate.
• Cross-Browser Syncing. Sync bookmarks of Safari Firefox, Chrome and more among all your devices.
• Directly. Keep your bookmarks in one central store, accessible within web browsers.

Features and Highlights

• Sync continuously among Safari, Firefox, Google Chrome, Vivaldi, Chromium, Chrome Canary, FirefoxDeveloperEdition.
• Sync automatically with iCab, Opera, OmniWeb, Epic, Roccat when these browsers quit.
• Sync manually with Pinboard, Delicious and Diigo.
• Easily organize with Tags, Hierarchy, or both.
• Engineered to play nice with Apple’s iCloud, Google Chrome’s Sign In, and Firefox Sync.
• Verify bookmarks, fix redirects.
• Find and remove duplicates.
• Upgrade insecure bookmarks to https://.
• Remove URL Cruft such as Google tracking tags.
• Sort (alphabetize) automatically when bookmarks are changed.  You control which folders you want to be sorted or not sorted, and how to sort them.
• Handles multiple User Profiles in Firefox and Chrome.
• Scriptable to collect new bookmarks from NetNewsWire or similar apps.

Note: 3 days trial version.