Altap Salamander (https://www.altap.cz/salamander/downloads/) is a fast and reliable two-panel file manager for Windows. It has an intuitive interface, offers viewers for all popular file formats as well as support for common archives, and has built-in FTP and SFTP clients.
Thanks to the merge Altap with Fine company now free of charge.
(http://idquodnescis.we.bs/public/images/altap-salamander-main-window.png)