System maintenance

A small tool to edit PATH (or any other environment variable) quickly and easily.

A tiny tool to re-mount write-protected NTFS volumes under Mac OS X 10.9+ in read-write mode.
No additional driver will be installed. It simply makes use of the build-in mechanisms already provided by Mac OSX Mavericks.

Fast and Simple. Users in over 200 countries have downloaded HashTab to use as a simple MD5 checker or for a more advanced file integrity check.

Identify the data vacuums on your hard drive with pinpoint precision very, very quickly.

WSCC supports the following utility suites:

• Sysinternals Suite
• NirSoft Utilities.

Yes, neither the description nor its website look too convincing. And yet, it's not just the best for utilizing multiple bootable things, it has zero directly analogous alternatives.

Not system maintenance but online presence maintenance is important too.