Surprised to find a fellow pdfxchange user. I use it for work where I deal with a lot of electronics/components datasheets. Pdfxchange’s search functionality/UI is superior to every other PDF viewer/editor I’ve tried. I’d love to find an open-source alternative.

Same, I think. Several years now with over 220 aliases and none sold/stolen that I’ve caught. That said, some may have ended up in the spam folder without me ever noticing.