Thursby Software Systems is releasing the first Mac OS X version of Dave - a Mac to PC file-sharing solution - for free.

This OS X release, which will be demonstrated at Macworld Expo in New York, is free to download from Thursby's Web site.

Company president William Thursby said: "Apple’s engineers have done an outstanding job of supporting us.

"Unfortunately, they just have not been able to complete the key features to allow us to properly integrate Dave into Mac OS X in a timely manner. We remain optimistic that we will be able to release a commercial version of Dave for Mac OS X in the near future, but for now we felt that we owed early adopters of Mac OS X an interim solution."

Limited compatibility This release runs only under Mac OS X 10.0.4, and there is no formal support for the release.

Thursby added: "The commercial release of Dave for Mac OS X is well on its way for beta, but requires a future release of Mac OS X. This isn’t a product that has been cobbled together from public source. It is a product that we have invested millions of dollars into, and that has been designed for the Macintosh user from the very beginning.

"This release will not only include formal support for Mac OS X, but will also include some key enhancements for Mac OS 9.x users - including support for very large file sizes and long file names."

For more news from New York, visit Macworld's Expo News page.