Based on our record, Okular seems to be a lot more popular than Cool Reader. While we know about 44 links to Okular, we've tracked only 2 mentions of Cool Reader. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
An Android tablet and the CoolReader app. For me, it's simply the best eReader experience available. It's incredibly customisable. The only downside is it doesn't support PDF or AZW3, both of which can be reformatted to your preferred file type with Calibre anyway. Source: over 1 year ago
Cool reader is also another option https://sourceforge.net/projects/crengine/. Source: almost 3 years ago
If you mean signing as in "signing with your handwritten signature", you could use Okular () which easily allows you to do that. Filling out forms also works nicely. Source: 5 months ago
I was in a similar position lately until I found Okular. Have you tried it? https://okular.kde.org/. - Source: Hacker News / 8 months ago
I would try Okular first, though, which is free and open source: https://okular.kde.org/. Source: 11 months ago
KDE's okular might be a good choice. I haven't personally used it for epub but I know it supports it. https://okular.kde.org/. - Source: Hacker News / 11 months ago
I use okular, don't think it has web export though. Source: 12 months ago
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