ClockworkMod is a software company, owned by Koushik "Koush" Dutta,[4] which develops various software products for Android smartphones and tablets.

The company is primarily known for its custom recovery image, ClockworkMod Recovery, which is used in many custom ROMs.

Using this recovery image, various system-level operations can be performed.

For example, one can create and restore partition backups, root, install, and upgrade custom ROMs.

[6][7] ClockworkMod Recovery is free and open-source software, released under the terms of the Apache License 2.0 software license.