Addresses several security weaknesses that could enable attackers to gain user rights by running arbitrary code, and fixes several performance issues with Excel. (Free, 221.5 MB)

Addresses several security weaknesses that could enable attackers to run arbitrary code. (Free, 9.7 MB)

Fixes a critical security issue that could result in arbitrary code execution. (Free, 19 MB)

Adds support for syncing photos to and from the iPad, fixes a number of tricky bugs. (Free update, 13.30 MB)

Fixes bugs related to importing configurations and propagating MAC address control lists. (Free, 10.24 MB)

Improves OCR accuracy, enhances compatibility with certain scanners, and resolves a text-annotation drawing issue. ($49.95/$99.95 new, free updates, 45.9 MB/46.1 MB)

Provides general reliability improvements for iMovie and fixes numerous security vulnerabilities. (Free, 68.63 MB)

Improves macro functionality, adds MIDI triggers and actions, and fixes several minor bugs. ($36 new, free update, 9 MB)

Applies important security fixes throughout Mac OS X 10.5 Leopard. (Free, download sizes vary.)

Adds support for Rapportive and for the iWork '09 applications' Send via Mail menu items, and fixes a few minor bugs. ($24.95 new, free update, 6.7 MB)

Improves stability and fixes problems through the application. ($199 new, free update, 69.83 MB)

Fixes a crashing problem caused by generating thumbnails of movies from the Aperture 3 library. (Free update, 35.84 MB)

Improves accuracy, enhances integration with Apple Mail in a number of ways, fixes several crashing bugs, and clarifies documentation. ($30, free update, 6.4 MB)

Goes Intel-native; adds automatic crash recovery and easy revert-to-saved, along with heavily revamped user interface. ($299, $139.95 upgrade, 51.6 MB)

Addresses a critical security vulnerability, several other minor security threats, and unspecified stability issues. (Free, 19 MB)