Review of 'Librum', an e-book reader that allows you to read EPUB, PDF, and more than 70,000 books for free and sync them on Windows, Linux, macOS, etc. This article, originally posted in Japanese on ...
The best free PDF reader apps do more than just act as a PDF viewer - any modern browser can do that. What I'm looking for is tools that go beyond that, offering commenting, collaboration, and ...
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