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Sonar can be useful for several purposes:
- Monitor untrusted software with Sonar to ensure it is not installing spyware or other unauthorized files without your knowledge. Or use Yank with Sonar technology—to create simple uninstaller files.
- Use Sonar to troubleshoot Spotlight-related slowdowns on your computer.
- Developers can use Sonar to monitor how frequently their software writes to the hard drive. Use this information to optimize your program’s hard drive usage.
Sonar reports file system activity. It reports all changes. It does not report reading activity. Sonar cannot prevent disk activity. It only can report it. However, you can use the information reported by Sonar to delete files you don’t want on your hard drive.
Sonar requires OS X 10.4, known as Tiger. Sonar uses the same technology that underlies Tiger’s Spotlight feature. However, Sonar does not use Spotlight itself and does not interfere with Spotlight in any way. Sonar is distributed with the free open-source program Sandal.