AllyCAD was originally developed by Paul Harper and was bought by Vincent Bester in February 1998. Bester went on to develop The 'Civil Designer' civil engineering infrastructure design suite of software integrating AllyCAD as the central CAD module. Elements of 'Stardust' and 'AllyCAD' were combined to form the Design Centre module, the Survey & Terrain and Roads modules came from Stardust, the Sewer and Storm modules were based on the original programs developed by Vincent. Since then the developer, Knowledge Base has further developed the Civil Designer suite of software and develops and distributes AllyCAD as a stand-alone CAD software package.
The current version is AllyCAD 2014. There are four price versions of AllyCAD available. All four have complete functionality but the drawing size is restricted in the low-cost versions. The entry level version (HOME edition) can be downloaded at allycad.com and restricts file sizes to less than 300KB. Two other reduced price versions are also available: AllyCAD INNOVATE and AllyCAD SME restrict the file size to 600KB and 1800KB respectively. The full version, AllyCAD PRO, has no restrictions.