What about Windows!?

Although tail was built for Unix/Linux systems, it has been ported to Windows. If you really must have this option on Windows you can use a program called TailForWin32.

Just like Unix/Linux - TailForWin32 is open source and licensed under the GNU GPL.

Further Reading

For more information on tail, more examples, and documentation (and even some related commands) - then take a look at ComputerHope - Tail.

Have fun tail'in!