SOGo is a very fast and scalable modern collaboration suite (or groupware). It offers calendaring, address book management, and a full-featured Webmail client along with resource sharing and permission handling. It also makes use of documented standards (IMAP, CalDAV, CardDAV, etc.) and thereby provides native connectivity (without plugins) to many clients such as Microsoft Outlook, Apple iCal, the iPhone, Mozilla Lightning, and a plethora of mobile devices via SyncML. It can reuse any existing email and database infrastructure, avoiding long hours of site restructuring.
PDFView is a very simple program to view PDF files. on contrast to Preview, the main window will open up maximized, and with the drawer hidden by default. When you toggle the drawer, the main window will resize just enough to show it, and maximize again when you hide it. The zoom level will be as big as possible to make the document fit, making it as easy to read as possible.
Lynkeos processes astronomical webcam images. By stacking the best images, the signal to noise ratio is increased, and details lost in the noise of individual images become visible in the resulting image. This software accepts, as input, QuickTime sequences or still images, in any image format supported by its active plugins and Cocoa. It generates a 16-bit RGB TIFF image as output, to be further processed with some all-purpose image processing application.