I just confirmed while testing vd, it does save to sqlite (select cols/rows, ctrl-s to save, name your file something.sqlite, done!) That's really awesome.
I might write a plugin [0] to load logged FIX [1] messages (an ascii-based, industry standard format for communicating financial transactions)
[0] https://jsvine.github.io/intro-to-visidata/advanced/extendin...
[1] https://en.wikipedia.org/wiki/Financial_Information_eXchange