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NetLogo is a programmable modeling environment for simulating natural and social phenomena. It is particularly well suited for modeling complex systems developing over time. Modelers can give instructions to hundreds or thousands of independent "agents" all operating concurrently. This makes it possible to explore the connection between the micro-level behavior of individuals and the macro-level patterns that emerge from the interaction of many individuals.

NetLogo lets students open simulations and "play" with them, exploring their behavior under various conditions. It is also an authoring environment which enables more...

What's New

Version 4.1.3:
  • improvements:
    • the GIS extension now works in applets
    • new Code Example: Label Position Example
  • fixes:
    • fixed bug in diffuse primitive causing it to fail in vertical cylinder worlds
    • fixed bugs where aborting a BehaviorSpace experiment could cause an error or memory leak
    • fixed bug where a turtle forever button could fail if multiple more...


Mac OS X 10.4 or later

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eyecapture Member IconReview+4

This is fantastic!

The included sample simulations offer unique insights into many questions such as: Do bird flocks have a leader? How much would you stand to save by upgrading the insulation of your home? How do traffic jams develop and resolve?

Watch as hundreds or even thousands of simulated animals, molecules, cells or guests at a party interact. Turn a knob or push a slider and the patterns change as each individual element in the simulation alters its behavior.

There is probably no better illustration of the ways complex behavior can arise out of nothing but large numbers of independent actors each doing its own thing by following simple rules. Incredibly mind-expanding stuff!

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Version 4.1rc4
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> 5 1


Current Version (4.x)


Downloads 15,316
Version Downloads 9,866
License Free
Date 07 May 2011
Platform Intel 64 / OS X / PPC 32 / Intel 32 / PPC 64
Price Free
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