Real Network Monitor is a professional, free application to monitor internet traffic information and statistics.
While it might be called Real Network Monitor it actually also has a lot of functions as well.
On the monitoring side, it can store all the download and upload rates and categorize it in days, months or years as well as megabytes or gigabytes. You can auto-update and auto-select the new connected interfaces.
You can view everything with the desktop monitor function as well as the taskbar monitor function.
Other monitoring includes download and upload speeds, type, MAC Adress, maximum download and upload rate, average download and upload speeds and more.
Some of the function beyond monitoring include a website blocker, saving of data in an encrypted file, a smart uninstaller, and more.