A: Hi,

we don't have a browser extension for Safari yet, but it should work for Yandex, as it's Chromium-based. You can test it with a free account. The Chrome extension can be downloaded here:
https://chromewebstore.google.com/detail/bookmark-manager/obdikhdfjocemafhpnidegmdfhbibdkf

The web app works in any modern browser. You can test it with our interactive demo here (no sign up required):
https://bookmarkmanager.com/demo

The bookmarks are not synchronized with your browser's bookmarks, but you can import them. The data is stored in the cloud.

Please let me know if you have more questions.