Sustainable Softworks is a Macintosh software developer inspired by building tools to make technology more accessible and improve the Mac user experience. The company was founded in January of 1996 by Peter Sichel to build a software IP router for the Mac (IPNetRouter which went on to win a Macworld Editor's Choice Award).

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Keyclick is a Mac OS X preference pane that provides adjustable audio feedback for keystrokes, mouse clicks, scroll wheel movement, and trackpad gestures.

IPNetMonitorX is a network troubleshooting toolkit for Mac OS X. Combining an intuitive
Macintosh user interface with deep Mac OS X knowledge, IPNetMonitorX provides essential
problem solving details from a single convenient application.

IPNetTunerX is a TCP/IP tuner for improving network performance and compatibility.