I some softwares to limit my speed and see my usage
What sort of network do you have?
^^ NetBalancer - internet traffic control tool for Windows
Free version of available but comes with limited functionality enough for your need. To monitor net usage, you can use networx .
Check post #7. I have given the link for netbalancer.
Yeah netbalancer is good. A friend of mine use it but he has paid version.
Network + Netbalancer can do the work for you.
Paid solution : For several pcs :
Net-Peeker - Monitor, Firewall, Bandwidth Control, Block Malware
for single pc :
NetLimiter - What is NetLimiter?
Net-Peeker is good enough ?
For paid solution I think it's good. Here's a review for it :
NetPeeker Download - Softpedia