IPsO is a Servers & Network software developed by route-101.net. After our trial and test, the software is proved to be official, secure and free. Here is the official description for IPsO:
BrothersoftEditor: IPsO is an IP monitoring tool. For both upload and download streams, it gives you instant transfer rates, average rates, maximum rates and data volumes transfered. Indications are given textually and graphically. IPsO is the ideal tool to monitor ADSL lines, cable, ethernet or WiFi. Its interface can be modified with skins you can free download IPsO 4.0 now.