Sioyek is such an awesome PDF reader.
The only thing that was missing for me was selecting text with a keyboard, and ow even that is added in the newest version.
The portal mechanism is just perfect.

It supports Linux, Windows and MacOS, AND is open source AND can be used keyboard-only. Do you really need anything more?

Check it out here -

Sign in to participate in the conversation
Scholar Social

Scholar Social is a microblogging platform for researchers, grad students, librarians, archivists, undergrads, academically inclined high schoolers, educators of all levels, journal editors, research assistants, professors, administrators—anyone involved in academia who is willing to engage with others respectfully.