It is supported by the department's Surveying and Mapping office in Tallahassee. Development began in 1988, and Version 1 was put into production in 1989. EFB was designed to be a simple survey data collector, that interfaces with a fixed number of Total Station Instruments. EFB collects measurement data for radial survey, cross sections, and differential leveling. At present, all development work has been stopped on EFB, and the version remains fixed at 2.55.
Documentation is also available here.
CEFB has been adapted for use a general survey data collection system, and is gaining popularity. CEFB has fewer hardware restrictions concerning PC serial port compatibility and memory sizes. You may download the approved version from this site. Documentation is also available here. It uses rigorous least-squares algorithms and includes detailed statistical analyses of the results.