JReepad
Jreepad is an open-source re-working of Treepad Lite in Java created by Dan Stowell. Jreepad is freeware.

JReePad comes in two editions: (1) a dedicated MAC OS X edition, and (2) a Java edition which runs on any operating system, but needs to have a Java virtual machine installed.

Screenshot of Jreepad running on MAC.
Click to enlarge

(1) Download Jreepad 1.3 as a Mac OS X application bundle (Java does not need to be installed)

(2) Download Jreepad 1.3 as a Java .JAR file (platform-independent, but needs a Java Virtual Machine installed)

Running TreePad
for Windows on MAC/Intel

You might be surprised to learn that you can already run TreePad (for Windows) on a MAC/Intel. For this you need to install third-party emulation software, as listed below:

Virtualbox Freeware, open-source virtual Machine for Windows, Linux, MAC. It supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista), DOS/Windows 3.x, Linux (2.4 and 2.6), and OpenBSD.
Runs all TreePad editions on MAC including TreePad X Enterprise.

VMWare Using this emulator you should be able to run all current TreePad Windows versions on MAC/Intel, including the Enterprise Editions. Please try this out first before purchasing VMWare for this purpose.

Parallels Relatively low-cost emulator for MAC/Intel. TreePad Lite, TreePad PLUS, TreePad SAFE and TreePad Business Edition all run on Parallels. Currently we have no information on whether TreePad X Enterprise runs on Parallels as well, but we think that this is likely.

Dedicated MAC
TreePad Editions?

We are working on a TreePad cross-platform programming framework which will make it possible to create native TreePad editions for a variety of operating systems including MAC.
A first native MAC edition of TreePad is planned to be available in 2008.

Related information

TreePad for Linux
TreePad conversion Utilities
TreePad Utilities
Download TreePad
Website authoring and TreePad
eBook authoring and TreePad
Photo albums with TreePad
TreePad affiliate program
Link to TreePad