The are several apps that read either a .txt file or a .DAT file and produce a .csv file. What are the options for visualizing the .csv file? I've tried both Dashware and the Excel plot package. IMO these are both not very good options. But, I know how to use the Excel plot package so that's what I use. Some other options that I know about but haven't tried are flightreplay.com and OriginPro (http://www.originlab.com/originpro). Are there others?