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Slowy is a tool which simulates custom connection's conditions and limits the network traffic to a specified destination port. It is useful for Web developers who need to test a website with a real-world connection or for limiting bandwidth-hungry applications. It currently supports:
  • custom bandwidth limit (kbit/s)
  • custom packet latency (ms)
  • custom packet loss rate (%)
  • custom destination port (so you will slow down only a single service)
Slowy is an OS X menu-bar app, so it is lightweight and is placed only in the menu bar.

What's New

Version 1.5:
  • Status bar network-speed indicators (download + upload)
  • New status-bar icon
  • Fixed missing Retina icons
  • Fixed a bug that caused Slowy to ignore some profile changes until restart
  • Fixed wrong parsing of upload port value
  • Other small tweaks


OS X 10.5 or later

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Current Version (1.x)


Downloads 1,105
Version Downloads 243
License Demo
Date 16 Jul 2013
Platform Intel 64 / OS X / Intel 32
Price $4.99
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