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Sparkle is an easy-to-use software update framework for Mac developers.

But this little framework's got a lot of features packed inside! Check 'em out:

With Sparkle, you're in good company. Here are just a few of the hundreds of apps which use Sparkle:

Sparkle was originally created by Andy Matuschak and is now developed and maintained by the Sparkle Project with the help of dozens of valued contributors.