Most Important Software Innovations, The

David A. Wheeler First version 2001-08-01; Revised 2011-07-22 1. Introduction Too many people confuse software innovations with other factors, such as the increasing speed of computer and network hardware. This paper tries to end the confusion by identifying the most important innovations in software, removing hardware advances and products that didn’t embody significant new software innovations. This paper presents its criteria for the most important software innovations and sources, the software innovations themselves, discusses software patents and what’s not an important software innovation, and then closes with Conclusions.