InCHM is a tool for building CHM projects and electronic books (e-Book). It is quite simple to use, even for beginner users, and in addition to the constructor includes a decompilation tool with integrated preview, an editor, and various links to external tools.
InCHM is a completely free program for non-commercial use, and is ideal for developing program manuals or instruction books. Among its virtues we can highlight the automatic creation of tables of contents and indexes, absolute customization of the CHM preferences, editor and integrated viewer, elimination of unused files to reduce the final size of the CHM, and much more.
You can free download InCHM 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.