Notably Yandex.Search, Yandex.Maps, Yandex.Disk (like Google Drive), Yandex.Mail, Yandex.Alice (voice assistant), Yandex.Taxi (like Uber), Yandex.Delivery (like Postmates), Yandex.Drive (like ZipCar), Yandex.Robot (idk, prob advanced AGI from the future), Yandex.Pay (like Google Pay), Yandex.Docs (like Google Docs/Sheets) all source codes leaked.