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

Project links
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
Page type
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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