Okular - Okular is a universal document viewer based developed by KDE.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
KiTTY - KiTTY is a fork from version 0.70 of PuTTY. It adds extra features to PuTTY.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
ConEmu - ConEmu-Maximus5 is a full-featured local terminal for Windows devs, admins and users. Get better console window with tabs, splits, Quake style, copy+paste, DosBox and PuTTY integration, and much more.