MacHeist today announced that it is now open to the public. MacHeist is a Mac software event involving weekly “heists” for its visitors with free Mac applications as rewards. The site will also be hosting a final week of sales of a software bundle containing some of the hottest apps for Mac OS X, with 25% of proceeds given to customer selected charities. This week, visitors will be undergoing a heist centering around an infamous unsolved puzzle. Those who participate will be rewarded with free copies of newly released personal finance manager, Cha-Ching, and 1Passwd, the powerful password manager with popular browser integration.