Thirty years after inventing the first killer app, Dan Bricklin is still sharing his wisdom with entrepreneurs and IT professionals In recent years, Bricklin immersed himself in Web applications, publishing an open source spreadsheet WikiCalc and an updated version SocialCalc, written in Perl and JavaScript. Bricklin has also become somewhat of an expert in open source licensing, advising entrepreneurs how to build an open source business.VisiCalc was really the first killer app; people bought Apple II computers just to run it. VisiCalc was one of the first applications designed for users, as opposed to developers, and it essentially created the business applications software market. You can learn about the history of VisiCalc in a paper that Bricklin wrote. You can also download a version for the IBM PC that still runs today. Most amazingly, VisiCalc ran on less than 64KB of memory!To be able to tap into Bricklin’s expertise in product development is a rare opportunity. He has insights into intellectural property, building a business, understanding what people will pay for, blogging, social media, and more. “Bricklin on Technology” is a worthwhile read for anyone that wants to create lasting and valuable software. To be able to tap into Bricklin’s expertise in product development is a rare opportunity. He has insights into intellectural property, building a business, understanding what people will pay for, blogging, social media, and more. ” Bricklin on Technology ” is a worthwhile read for anyone that wants to create lasting and valuable software. Technology Industry