OnyX 2.4.3b2 (free) - OnyX is a tool for verifying the Startup Disk and system files structure of a Mac OS X computer. The software also provides users with access to a number of hidden parameters of the Finder, Dock, and some Apple applications. With the latest update, OnyX no longer launches after a restart or shut down. New options for enabling and disabling iTunes notifications and Time Machine local backups have also been added. [Download - 13.1MB]

Yasu 2.7.6 ($4) - Yasu is a system utility that can be used to perform a specific group of maintenance tasks without the need for any Terminal commands. The v2.6.7 update has addressed an issue that would prevent the removal of user cache files that had incorrect permissions. The update has also changed how Yasu logs errors to make them easier to find. [Download - 2.9MB]

iSale 5.8.5 ($20) - iSale is an auction management tool designed for use with eBay. The software looks to simplify eBay's interface and provide users with options for creating better auction pages. Version 5.8.5 has added FedEx as a shipping option for US eBay users, as well as support for Moneybookers, Paymate, and ProPay. [Download - 57.9MB]

PhotoStyler 6.0.2 ($30) - PhotoStyler can be used to add different effects and filters to photos. The software includes effects like scratches, sepia tone, photo frames, and shadows, each with customizable parameters. The v6.0.2 update includes a number of minor stability and performances fixes, along with several UI tweaks. [Download - 30.8MB]

Kaleidoscope 1.1.6 ($40) - Kaleidoscope is a tool that can be used to highlight differences between files. The software's two main functions, Text Scope and Image Scope, allow users to compare two or more files simultaneously. Version 1.1.6 has added full screen support for OS X Lion, as well as improved integration for Mercurial and Bazaar. [Download - 10.8MB]