The Russian Classic Language Pack is an add-on for the SlideIT Keyboard on Android devices. It is developed by Dasur Ltd. and available for free. This language pack is designed for users who want to type in Russian using the SlideIT keyboard and requires the SlideIT keyboard to be installed on the device.

The installation process is straightforward, requiring users to first install the SlideIT keyboard and then download and install the Russian Classic Language Pack. Once installed, users can easily switch to the Russian Classic keyboard in the SlideIT settings. The language pack features a classic Russian keyboard layout with all the necessary characters and symbols for typing in Russian.