Arq backs up the critical files on your Mac to the Internet. Your backups are stored at Amazon S3 ("Simple Storage Service"), the gold standard of reliable online storage in the industry, backed by Amazon.com, a large stable company.
Backups of your Mac are complete and accurate, including all "metadata" -- something that many other online backup offerings can't claim...

TimeMachineEditor is a software for Mac OS X 10.5 Leopard that lets you change the default one-hour backup interval of Time Machine.
You can change the interval or create a more sophosticated scheduling

Mac client currently in beta.

Bucket Explorer is a User Interface for Amazon.com’s Simple Storage Service (S3). Amazon S3 provides "pay only for what you use" secure on-line data storage service.

A quick, easy, and secure solution to backup your valuable files. 50Gb for free

I provide a few compiled binaries of Unison, a great file synchronization software. Unison is an open-source project; I merely compiled the sources in a few different environments, in the hope that this could save some people some trouble.

Encrypted bandwidth-efficient backup using the rsync algorithm

Déjà Vu offers an innovative new approach to backing up your files. It's a "preference pane" that lives in your System Preferences, and it allows you to schedule unattended backups of important folders, or even your entire system.