Horizontal Killer Applications

Trello looks pretty cool, but I found this insight very interesting. [Link]

The great horizontal killer applications are actually just fancy data structures.

Spreadsheets are not just tools for doing “what-if” analysis. They provide a specific data structure: a table. Most Excel users never enter a formula. They use Excel when they need a table. The gridlines are the most important feature of Excel, not recalc.

Word processors are not just tools for writing books, reports, and letters. They provide a specific data structure: lines of text which automatically wrap and split into pages.

PowerPoint is not just a tool for making boring meetings. It provides a specific data structure: an array of full-screen images.

Some people saw Trello and said, “oh, it’s Kanban boards. For developing software the agile way.” Yeah, it’s that, but it’s also for planning a wedding, for making a list of potential vacation spots to share with your family, for keeping track of applicants to open job positions, and for a billion other things. In fact Trello is for anything where you want to maintain a list of lists with a group of people.

There are millions of things that need that kind of data structure, and there hasn’t been a great “list-of-list” app before Trello. (There have been outliners, but outlines are, IMHO, one of the great dead ends in UI design: so appealing to programmers, yet so useless to civilians).