QtDAQ is a rather large portion (30 000 lines of code) of my PhD. It is a digital data acquisition system (DAQ) for high speed digitizers, performing analysis of captured waveforms. In order to maximize flexibility, it has a multiple document interface (MDI), where users can add a number of plots of different types to a specific template, which can be recalled at a later stage. In addition to built- in analysis routines, the Google V8 JavaScript engine has been embedded, allowing the user to run custom code that interacts with the analyzed data. QtDAQ has been used to analyze data for a number of peer reviewed journal articles.