I don't know of full open source equivalents. Parts of Apple's code are open source, though, for example http://opensource.apple.com/source/security_systemkeychain/s... (may not even compile; not all Apple's open source releases do)
I don't know of full open source equivalents. Parts of Apple's code are open source, though, for example http://opensource.apple.com/source/security_systemkeychain/s... (may not even compile; not all Apple's open source releases do)