Here are the latest updates for Mac OS X apps:

Dejal System (www.dejal.com) has announced BlogAssist 2.4, an update to its tool to help weblog and website editing by making HTML markup easier. This release includes new Substitutions preferences, Mountain Lion compatibility, and changed system requirements.

Hamrick Software (www.hamrick.com) has released Vuescan 9.1.15, a new version of the VueScan software for Mac OS X that’s designed to let users produce better digital images from color snapshots, negatives, slides and documents. It’s a maintenance release with a variety of bug fixes.

Renewed Vision has rolled out ProPresenter 5.0.11 (http://www.renewedvision.com/propresenter.php), an upgrade of the Mac-only, two-screen lyric, music, and video presentation software package. It’s a maintenance release with some bug fixes.

Thoth Software has given us Thoth (http://www.appgarth.com/thoth.html) 1.9.0.21, a new version of its Usenet newsreader application. The new version improves Mountain Lion compatibility.