The week the Omni Group, the people behind the popular OmniGraffle diagraming software, released four of their applications as freeware. OmniWeb, OmniDazzle, OmniDiskSweeper, and OmniObjectMeter are all now available with no licensing restrictions and are fully functional.

• OmniWeb is an advanced web browsing that’s easy and fun.
  
• OmniDazzle is a set of fun and useful enhancements that help you highlight certain areas of your screen, create visual effects, and track the location of your mouse pointer.
  
• OmniDiskSweeper is a utility for quickly finding and deleting big, useless files and thus making space on your hard disks.
  
• OmniObjectMeter is a tool that makes it easy for Cocoa and Unix developers to find and fix memory leaks.
  

Read more here: OmniWeb, three other Omni apps available as freeware