Company MBEX LTD EOOD created these great apps:
Быстрые Кроссворды на русском, Crucigramas, Cruciverba (Italiano), Кръстословици, Sanaristikko, Quick Crosswords, Teka-teki Silang, Palavras Cruzadas Brasileiro, Сканворды на русском, Palavras Cruzadas (Diretas), Crucigrama — Autodefinido, and others..