A Firefox add-on that allows you to search over yandex.ru services
Yandex.Bar also allows you to bookmark sites instantly and access your link collection from anywhere, or share them.
With Yandex.Bar, you will get quick access to Yandex social services, like Ya.ru or Yandex.Fotki (the photo sharing site) and be notified of what’s hot on the service.
Furthermore, you can use search-as-you-type suggestions and see where the words you’ve searched for are on a page, the toolbar will highlight the search phrase and scroll the page automatically to their location.
Yandex.Bar is cross-platform and it works on Mac OS X, Windows and Linux.