ENERCALC has been supplying the Structural Engineering Library to engineers and design professionals since 1983.

Version 10 is the current version of the product. It was released in the summer of 2017.

Version 6 was a complete rewrite of the product for Microsoft Windows using the substantial availability of newer programming systems. It was released in January of 2008.

Version 5.8 is still widely used although no longer supported or maintained. To reinstall the prior Version 5.8 contact and provide your "KW" user registration number. You must have purchased Version 5.8 when it was being sold to be able to receive an installation file.

Version 5.6 and all earlier versions are no longer supported nor are they available.

Version 5.x provided a rewritten Microsoft Windows program for the user interface. The prior “C” Language engineering code was retained and improved over the 9 year run of the product.

Version 4.x provided a rewritten product where the user interface was a DOS program which simulated a spreadsheet. The engineering programs were rewritten in the “C” programming language because the calculation capabilities of a spreadsheet were too limited (and indeed today a spreadsheet is no match for procedural code).

Versions 1, 2 & 3 were Lotus 1-2-3 spreadsheet templates. We were the first engineering software company to offer a set of spreadsheet templates as a retail software product.