This webpage allows you to type text in Church Slavic without installing any special software. You can then copy the text into you text editor or word processing software or generate a printable PDF. If you will then edit the text on your computer, we recommend the Ponomar Unicode font, available here.
You may also be interested in various Slavonic keyboards that you can install on your computer.
The virtual keyboard provides two drivers: a Slavonic Standard ('cu') and a Russian Extended ('ru'). To switch between the layouts,
click on the Cu button in the lower lefthand corner.