MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
iperf - A TCP, UDP, and SCTP network bandwidth measurement tool
KiTTY - KiTTY is a fork from version 0.70 of PuTTY. It adds extra features to PuTTY.
JPerf - This project gives a better UI and new functionalities to the initial JPerf 1.
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.
NetStress - NetStress is a user-friendly benchmarking tool that is mostly used by networking professionals to measure the network performance of both wired and wireless connections.