A reasonably reliable traffic per application monitor using BPF
picosnitch helps you protect your security and privacy by "snitching" on anything that connects to the internet, letting you know when, how much data was transferred, and to where. It uses BPF to monitor network traffic per application, and per parent to cover those that just call others. It also hashes every executable, and will complain if some mischievous program is giving it trouble.
In plain words
Picosnitch is a network monitoring tool that tracks internet connections made by applications on a user's system. It records when connections occur, how much data is transferred, and destination addresses using BPF technology to monitor traffic per application and parent processes. The tool also hashes executables to detect unauthorized modifications. It is designed for users concerned with security and privacy who want visibility into what their programs are communicating over the network.
written from the facts on this page · September 2026
Does the same job
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