Lion is the first operating system to require, and to fully take advantage of, 64-bit addressing modes in the Intel chips that power Apple’s Macintosh computers. One of the side-effects of this is that every object identifier in Mac OS X’s Cocoa programming framework (typically an address in memory), is now twice as long as [...]

Today Apple released OS X Lion, aka Mac OS X 10.7, the latest in the decade-long run of incredible updates to Mac OS X. I encourage everybody to upgrade to Lion. I’ve been running it for months in pre-release form, and even while the bugs were being ironed out, I found the experience of using it [...]

It’s only been one day since the launch of the Mac App Store, and the Mac developer and user communities are buzzing with consequences, both good and bad, of the store and how it operates. One particularly vexing issue is the question of whether an app that is already on your Mac is “installed” or [...]

One of the big new features in MarsEdit 3 is a revamped media manager that allows you to easily browse local libraries from iPhoto, Aperture, etc. This functionality is based largely on the great work of the iMedia project, which was spearheaded by Karelia to replicate Apple’s own ubiquitous media browsing interface, some variant of [...]