Fixes several minor bugs in the system-wide notification utility. (Free, 6.9 MB)

The data recovery software adds support for recovering files produced by several new apps, along with a variety of bug fixes and performance improvements. ($99 new, free update, 13.2 MB)

Can now open projects that have been created by GarageBand on the iPad, and include fixes for additional minor issues. (Free updates, 192.5 MB and 138.7 MB respectively)

The personal finance software gains the capability to import data directly from Quicken Essentials, a completely new interface for managing downloaded transactions, additional graphs and reports, multi-currency improvements, and enhanced report printing. ($50 new, free upgrade for Moneydance 2010 owners, $25 for older versions, 9.4 MB)

A new calendar app for Snow Leopard, Fantastical includes features like natural language recognition, compatibility with several online calendar providers, and automatic alarms. ($20 new, 7.7 MB)

Introduces powerful new security features essential for using the PDF manipulation software for medical records. ($59.95/$99.95 new, free update, 41.4 MB)

Provides improved font rendering, new UI elements, and several bug fixes to Apple's professional media applications. (Free update, 15.7 MB)

Adds support to Aperture 3 and iPhoto ’11 for cameras from Fujifilm, Nikon, Olympus, and Samsung. (Free update, 6.62 MB)

A major revision to the Web site creation software from Karelia Software that features more than five dozen new features and many enhancements. ($77 new, $47 upgrade, free upgrades for purchases after 5 January 2011, 28.7 MB)

Addresses a problem that caused Apple’s digital photo management app to handle merged events incorrectly when syncing to iOS devices. ($14.99 new, free update, 106.3 MB)

The venerable graphics application gains several new features, including realistic brushes, performance improvements, and a more customizable user interface. ($429 new, $229 upgrade, 297 MB)

Includes details for the white iPhone 4 and the recently released batch of iMacs, as well as several minor new features. (Free, 27.7 MB)

Adds more audio formats, better multiple monitor handling, and auto-updating to the still and video screen capture software. ($69/$29 new, free update, 8.5 MB)

Flying Meat’s graphics editing app gets a major overhaul — followed by a bug fix release — and comes to the Mac App Store. ($49.99 new, $19.99 upgrade, 14.8 MB)

Updates for the latest MacBook Pro models address the stability and reliability of Boot Camp, graphics displays, and Thunderbolt. (Free, 132.69 MB and 3.06 MB respectively)