Cydia by developer Saurik has been around the block a few times, beginning in 2008 as a means of installing and modifying software on jailbroken iDevices. A diverse ecosystem has sprung up around the platform, expanding what iOS fans can do on their usually restricted devices. Saurik's Cydia Substrate, a platform for modifying devices without flashing new ROMs, has now made its way over to Android.

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Cydia Substrate does not do anything interesting on its own, but developers can use the platform to distribute extensions that modify software without requiring access to source code.

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