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Bean Network Tester

Bean Network Tester simulates delay, packet loss and limited bandwidth for Windows application testing.

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Project Note

A closer look at Bean Network Tester

An open-source Windows network emulator for applying poor connection conditions during application tests.

Make a timeout reproducible

Bean Network Tester is aimed at developers and QA teams who need to see an application fail under a weak connection. The public site describes fixed or random delay, packet loss, bandwidth caps and broken connections. Those controls give a test a specific condition, such as delayed responses, instead of relying on an unreliable hotspot to produce a bug.

Target selection matters

The targeting guide describes filters for a process name or ID, an address, or a port. It says a name-based target follows a restarted process, while a process ID belongs to the instance that exited. That distinction matters when a test deliberately restarts the application.

The guide also states that an unfiltered session affects the whole machine. A tester needs to choose the intended target and duration before starting, particularly when working through a remote connection. The one-app focus is a configuration choice rather than an automatic boundary.

A Windows testing utility

The maker lists 64-bit Windows 10 and 11 and says traffic capture requires administrator rights. A desktop window supports exploratory use, with command-line operation intended for scripted tests. This first look covered the public site and targeting guide without downloading the program or changing network traffic. Isolation, timing accuracy and recovery behavior therefore still need to be checked in the intended test environment.

For reference

Project facts

The published details and source context, together in one place.

Product
Bean Network Tester
Category
Developer Tools
Stage
Live but early
Pricing
Free and open source under GPLv3.

Pricing source: Bean Network Tester download page · checked Sep 25, 2026

Public Context Check
Public pages were checked Aug 30, 2026.

Project note details

Dates and editorial links

Published

September 2, 2026

Updated

September 2, 2026

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Project Note

Status

Published note

Publication history

Note history

Publication and substantive update dates for this public note.

Sep 2, 2026
Project note published.
Aug 30, 2026
Public-page information added to the note.

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