Lorenzo Puleo has updated DiapoSheet for Mac OS X (10.6 or higher) to version 1.1. You can now click and select the layout images.

Click holding down the Shift key to extend the selection continuously. Click holding down the Option key to extend the selection discontinuously. With the images selected, press the Delete key to remove the images from the page. The original images on the disk will be left untouched.

DiapoSheet lets you lay out your photos with metadata-exif and get a contact sheet PDF file. Drag a folder containing images onto the DiapoSheet window and you are done. You can change the number of rows and columns, their gaps, the margins, the page size and format, add your custom logo and company description, your watermark, display the metadata-exif with your favorite font, color and label.
You can then export your document to PDF, TIFF, PNG, JPG at the resolution of your choice. You can select the resolution of the images even when exporting to PDF.

DiapoSheet costs US$24.99 and available worldwide exclusively through the App Store in the Photography category (http://tinyurl.com/crxsc7p). Version 1.1 is a free update for registered users.