SumatraPDF is a multi-format (PDF, EPUB, MOBI, FB2, CHM, XPS, DjVu) reader for Windows under (A)GPLv3 license, with some code under BSD license (see AUTHORS).
More information:
- main website with downloads and documentation
- wiki with more docs
To compile you need Visual Studio 2015. Free Community edition will work.
Open vs2015/SumatraPDF.sln.