The ConEmu system is better known as the ConEmu-Maximus5 system, and it is a Windows emulator that has tabs and is able to present a number of different consoles along with simple GUI applications, yet it is all clumped together with one customizable GUI window. The customizable window has a range of helpful and handy features, and you may download and use this emulator for free.
An efficient and helpful tool
In the beginning, the ConEmu program/application was developed to be a companion to FAR (the Far Manager), but it is now able to be used with other console application and with other GUI tools (so long as they are simple ones). The tool is free and part of an active project, so they are happy to consider contributions and suggestions. The program does not provide Shell features, but it is a rather advanced console window that allows you to run the Shell of your choice.
A fine Windows console emulator
The ConEmu Windows console emulator beats out most of its competition because it is customizable, it has plenty of features, and its website is loaded with information to help you understand and learn the program. You do not have to search around on forums for answers to common and uncommon questions. The developers have done a good job of creating this program and adding enough information to their website to make this app/program usable by all.