# Rain Wiki

> Neutral reference articles about system folders, commands and settings: what they are, how to check them and what is safe to change. Every command is checked against the official documentation.

- [Windows](https://raincleaner.eu/wiki/windows/): System folders, repair tools and security features of Windows 10 and 11.
- [Linux](https://raincleaner.eu/wiki/linux/): Logs, packages, disk space and services on Linux servers and desktops.
- [Android](https://raincleaner.eu/wiki/android/): Storage, battery, connectivity and security settings on Android phones.