Not the OP, but I find Calibre burdensomely heavy for what I want, and Okular far too glitchy. Also, sometimes I am at PCs where I can't install arbitrary softw

Not the OP, but I find Calibre burdensomely heavy for what I want, and Okular far too glitchy. Also, sometimes I am at PCs where I can't install arbitrary software. I think we still need far more/better solutions in the open source e-reading space.