An anonymous reader writes "Mac expert John Welch, author of the widely read OS X versus Vista comparison, delves into Apple's Leopard Server OS. He and Information week have on offer a deep dive into what's known so far about OS X Server 10.5, which will be showcased at Apple's Worldwide Developers Conference in June. Welch weighs in on Leopard's iCal, Wiki, file, Quicktime, and mail services, along with Xgrid 2, Open Directory 4, and 64-bit capabilities. What does it all add up to? His assessment: Apple probably isn't aiming at 'big' enterprises; just the same, Leopard Server is shaping up to be a great SMB (small and mid-sized business) product. Welch writes: 'For about a thousand bucks on existing hardware, or for the cost of an Xserve, you get a really solid server, able to support Web services, collaboration, groupware, IM, and file services. You can run it with its own directory service, or as part of an Active Directory implementation out of the box. It provides some features that due to pricing and/or setup requirements, have traditionally been reserved for big enterprises — in particular clustering of both email and calendaring servers.'"