Uncomplex has released Mailplane 3.1 with a number of improvements to the Gmail-specific email client. The update now enables you to switch between an unlimited number of Gmail accounts (previously, Mailplane limited you to 10 accounts), adds an option to suppress notifications of unread messages in the menu bar and the Dock (if you don’t need to see the count of unread messages taunting you everywhere you look), automatically hides the Gmail header when printing a message, fixes the Quick Look previews of Office documents in OS X 10.9 Mavericks, and fixes a bug with Google’s recently updated sign-in interface. ($24.95 new, free update, 17.2 MB, release notes)
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Show Hidden Files in Open/Save Dialogs in Snow Leopard
In Snow Leopard, if you want to show otherwise hidden files in Open and Save dialog file lists, just press Command-Shift-period. Pressing it again hides the files.