Open source crop planning software
Software from Fail Better Farm, Clayton Carter - cropplanning[at]gmail[dot]com
"In March of 2007, we received USDA-SARE funding support to develop farm software for small farms such ours. Please check it out! We hope you find it useful."
http://cropplanning.googlecode.com/
"Crop Planning Software for small farmers and serious gardeners. Plan for and manage the myriad crops, varieties and plantings required to keep a modern, intensive market garden producing throughout the growing season. This is a cross-platform (Windows, Mac, Unix, etc) desktop application that allows small farmers and gardeners to: Create, duplicate and delete crops and plantings; inherit data from other plantings and crops; key in a few data and let the program calculate the rest for you; sort and filter your plantings. These are all possible and new features are being added all the time. The software has been released as open source, free software and therefore is and will always be available free of charge. Those who donate, however, will have access to priority email support..."
Latest version: Beta2 released November 25, 2009