I did a search before posting, so hope this is helpful. These are all PHP 5.3 ready...

APC 3.1 BETA:
http://pecl.php.net/package/apc

on windows:
http://downloads.php.net/pierre/


xcache updated TODAY:
http://xcache.lighttpd.net/wiki/XcacheRedist

on windows:
http://xcache.lighttpd.net/pub/Releases/1.3.0-rc1/


eacelerator (Fastest from my tests):
http://snapshots.eaccelerator.net/

Enjoy!