Vwdiff is a subproject of Jarsync, which aims to use that library to produce a visual differencer, where the differences between two versions of a file are displayed in a concise, color-coded form.

Vwdiff does exactly this for a list of URLs, each of which it will periodically poll to find the differences between the version last accessed and the current version. The program includes a basic web server that displays the data. There is a non-functional demo, which illustrates its usage.

There is a preliminary binary release, which should work out-of-the-box on any Java 1.4 platform:

And the current source code:

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