IPSW is an independent resource that enables users to find links to download iOS firmware. Developers can integrate with the IPSW API in order to receive site notifications as well as reminders when new updates are released. The site also includes links to resources to aid in jailbreaking devices. The API is made up of different parameters that can access different bots for specific information channels: Firmware, PwnageTool, fwlinksbot, iTunes, and redsn0w. The API and service is hosted by "Just a Penguin," a resource for Apple TV, Mac OSX & iOS users.