It's a good add-on.

Not working anymore. Have to log in constantly. Erratic behaviour showing backups.

Addon no longer logs in to sync

The synchronization works really well now. Eversync is a good replacement for xMarks.

Worked fine 'til yesterday, but now it doesn't work at all on Firefox 114.0.2x64. It doesn't sync/download/upload/merge. Reinstalled extension (now 18.5.7) doesn't solve. Seems still working fine in Chrome.

After I was orphaned from xMarks, it replaced it nicely.
But the only caveat is that when I do a search on a bookmark that is duplicated, it simply shows the 2 (or more duplicates) without telling me where it is located, in which subfolder they are found, making it difficult to organize them...
In the bookmark popup itself, it could show in which folder the link is located.
Fix this, and me and the rest of the guys will give 10 stars

I've been using Eversync (Everhelper) Premium for a few years, and I couldn't be more pleased! I'd been using Xmarks forever, but when that app ceased to exist I had to look around for a suitable replacement and VOILA! I found this excellent Bookmark and Syncing App (with FVD Speed Dial) from Nimbus Web, and I hope they keep updating it forever. Highly recommended.

works reliably for me on firefox and chrome, and on macos, linux, and windows

A good and useful extension. I use them in all major browsers. The app on my Android tablet keeps crashing and is unusable. I wish this bug will be fixed and I wish an app for iPad and iPhone. Oliver