Based on our record, PDF Reader X seems to be more popular. It has been mentiond 1 time since March 2021. 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.
I suggest that you try with a dedicated PDF viewer, I'm using Adobe Acrobat Reader DC (i.e. The "official" one) but there's a bunch out there, Foxit Reader is another that people sometimes recommend. Source: almost 3 years ago
Kchmviewer - Kchmviewer is a free, open-source CHM (MS HTML help) and EPUB viewer for Unix, Mac and Windows...
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
WinCHM - Creating CHM file, Make CHM file, Web Help. WinCHM Pro - Help authoring software (CHM, WebHelp, DOC, PDF) . With this powerful tool you can not only create chm file from scratch, but also convert a set of existing HTML files to a chm file.
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Read CHM - Read CHM is ultimate CHM (Compiled HTML Help) file reader.
Okular - Okular is a universal document viewer based developed by KDE.