Originally we required sites to license the software in cases where they were going to build commercial products/services around Harvest. In June 1995 we changed this policy. We now allow people to use the core Harvest software (the code found in the Harvest ``src/'' directory) for free. We made this change in the interest of encouraging the widest possible deployment of the technology. The Harvest software is really a reference implementation of a set of protocols and formats, some of which we intend to standardize. We encourage commercial re-implementations of code complying to this set of standards.