Bean Network Tester icon
Bean Network Tester icon

Bean Network Tester

Simulate bad network conditions on Windows - latency, packet loss, jitter, bandwidth limits, drops - to test how your app behaves on a poor connection. GUI + CLI, powered by WinDivert.

Bean Network Tester screenshot 1

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Platforms

  • Windows
Bean Network Tester screenshot 1
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Bean Network Tester information

  • Developed by

    PL flagdonislawdev

  • Licensing

    Open Source (GPL-3.0) and Free product.

  • Written in

  • Alternatives

    2 alternatives listed

  • Supported Languages

    • English
    • Polish

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  •  2 Stars
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What is Bean Network Tester?

Bean Network Tester is a tool for testers and developers: check how your application behaves on a poor connection. Like Clumsy or NetLimiter, it lets you deliberately degrade the network - add ping, drop packets, cap the speed, tear connections down, and more. It works by intercepting traffic with the WinDivert driver (via PyDivert), and offers both a clear windowed interface with tooltips and a command-line mode for CI.

What it can do:

  • Add lag and jitter - fixed or random delay.
  • Drop, corrupt or duplicate packets - fake a flaky link.
  • Cap download/upload speed - throttle to a set KB/s.
  • Tear connections down - TCP resets or a dead link.
  • Flap the link on and off - outages that come and go.
  • Block ports or IPs - a small built-in firewall, plus LAN mode (no internet).
  • Aim at one app - by process, PID, IP or port.
  • Presets and saved profiles - 56k modem, Cafe WiFi, Satellite and more.
  • Run scripted scenarios - timed steps that change the network on their own.
  • Reproducible by seed - replay the exact same random loss and jitter.
  • Watch it live - chart, connections table, counters.
  • Command-line mode - scriptable for CI.
  • No telemetry, fully offline - sends no data anywhere.

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