: Long-term monitoring of how much data each application is using.

NetLimiter 5 uses a subscription-based model, which means traditional "lifetime" serial keys from older versions do not work the same way. Most "serial key" or "crack" searches for this software lead to untrusted sites that may package malware with their downloads. Key Information on Licensing

While sites promising "NetLimiter 5 serial key top" results look tempting, they often lead to: Security Risks