Noodlesoft has released version 3.0.9 of its file cleanup utility Hazel, which updates some icons and fixes some issues when viewing the app with the new MacBook Pro with Retina Display, as well as adding a Developer ID that allows the app to be installed without difficulty when using OS X 10.8 Mountain Lion’s Gatekeeper security feature. Hazel 3.0.9 also displays more-accurate error reporting in its preview, prevents a whole pattern getting deleted when you delete a custom token, and fixes an issue with the incomplete downloads setting that was causing prediction errors. ($25 new, free update from version 3.x, $10 upgrade from previous version, 5.2 MB, release notes)
Single Time Machine Backups
Tired of Time Machine running all the time? You can turn it off in the Time Machine preference pane, but still initiate a single backup by choosing Back Up Now from Time Machine's menu bar icon. Of course, your backup is much less likely to be up to date, but Time Machine won't be taking any resources while you're trying to work.