Software Alternatives, Accelerators & Startups

FlexSim VS GNS3

Compare FlexSim VS GNS3 and see what are their differences

FlexSim logo FlexSim

Simulation software to model, simulate, predict, and visualize systems in manufacturing, material handling, healthcare, warehousing, mining, etc.

GNS3 logo GNS3

GNS3 is a graphical network simulator that allows simulation of complex networks.
  • FlexSim Landing page
    Landing page //
    2023-09-15
  • GNS3 Landing page
    Landing page //
    2023-10-06

FlexSim features and specs

  • User-Friendly Interface
    FlexSim has an intuitive and easy-to-use interface that allows users to create simulations quickly without extensive training.
  • 3D Visualization
    It offers robust 3D visualization capabilities that can make simulations more insightful and easier to interpret.
  • Versatility
    FlexSim supports a wide range of industries, including manufacturing, healthcare, warehousing, and supply chain, making it a versatile tool.
  • Comprehensive Library
    The software comes with a comprehensive library of pre-built components that can be used to model different scenarios efficiently.
  • Integration Capabilities
    FlexSim can be integrated with other software systems, including ERP and MES, ensuring data consistency and enhancing functionality.
  • Strong Analytical Tools
    The software includes robust analytical tools that can help in optimizing processes and simulating complex scenarios.
  • Community and Support
    FlexSim offers a strong community and support network, including forums, tutorials, and customer support to help users troubleshoot and maximize the software's potential.

Possible disadvantages of FlexSim

  • Cost
    FlexSim can be relatively expensive compared to other simulation software, which may not be feasible for smaller organizations.
  • Learning Curve
    Despite its user-friendly interface, FlexSim can still have a steep learning curve for complete beginners who may require extensive training.
  • Performance with Large Models
    The software may show performance issues when dealing with very large or complex simulation models, requiring significant computing resources.
  • Limited Customization
    While it offers many pre-built components, the ability to fully customize these components can be limited compared to highly specialized simulation tools.
  • Dependency on Third-party Software
    Integration with other software can sometimes require additional configuration and expertise, which might be a hindrance for some users.
  • Updates and Maintenance
    Keeping the software updated and maintaining it can sometimes be troublesome, especially if you are reliant on legacy systems.

GNS3 features and specs

  • Realistic Network Simulation
    GNS3 provides a highly realistic environment for simulating complex networks, allowing users to design and test their network setups with real-world accuracy.
  • Wide Device Support
    It supports a wide range of network devices and software, including Cisco routers, switches, firewalls, and virtual machines, enabling diverse network topologies.
  • Free and Open-Source
    GNS3 is freely available and open-source, making it accessible to anyone without requiring a commercial license or subscription.
  • Community Support
    There is a large and active community of GNS3 users who provide support, share resources, and contribute to its development.
  • Extensive Learning Resources
    GNS3 has a vast array of tutorials, documentation, and guides that help users of all skill levels learn how to effectively use the tool.

Possible disadvantages of GNS3

  • Resource Intensive
    GNS3 can be very demanding on system resources, requiring significant CPU and memory, which may be challenging for users with lower-end hardware.
  • Steep Learning Curve
    For beginners, GNS3 can present a steep learning curve due to its complexity and the detailed knowledge required to effectively set up and manage network simulations.
  • Limited by Hardware Performance
    The performance and scale of simulations can be limited by the hardware of the host system, affecting the ability to run large or complex network topologies.
  • Initial Configuration Complexity
    The initial setup and configuration of GNS3, including the integration of virtual devices and images, can be complex and time-consuming.
  • Occasional Stability Issues
    Users may encounter stability issues or bugs, especially when integrating a variety of virtual devices and software versions, which can disrupt simulation activities.

FlexSim videos

FlexSim 2020 Core Training: Day 1

More videos:

  • Review - FlexSim 2020 Core Training: Day 2
  • Tutorial - FlexSim HC 2020 Tutorial

GNS3 videos

CCNA Labs - Packet Tracer or GNS3?

More videos:

  • Review - Packet Tracer vs GNS3 vs VIRL vs Physical Equipment (Part 1). Which is best?
  • Review - GNS3 2.1.3 Basic Full Setup Guide For Beginners (2018) Start To Finish

Category Popularity

0-100% (relative to FlexSim and GNS3)
Technical Computing
60 60%
40% 40
Simulation Software
49 49%
51% 51
Tool
48 48%
52% 52
Numerical Computation
67 67%
33% 33

User comments

Share your experience with using FlexSim and GNS3. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, GNS3 seems to be more popular. It has been mentiond 12 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

FlexSim mentions (0)

We have not tracked any mentions of FlexSim yet. Tracking of FlexSim recommendations started around Mar 2021.

GNS3 mentions (12)

  • Bug Bounty Hunting 101: An Introduction for Beginners
    Practice: Set up simple networking labs using tools like Cisco Packet Tracer or GNS3. - Source: dev.to / 11 months ago
  • Where do I go from here?
    If you mean a Cisco 2950, I guess you want to learn Networking. So a good place to start is to run GNS3 (https://gns3.com). You can download a VM image and run that, that's what I do. GNS3 is a great learning tool and you can use both real (your 2950) and virtual devices to make networks. Source: over 1 year ago
  • Exploiting Wpa3
    GNS3 is the software your looking for it can be found here https://gns3.com let me know if you could use some resources on it. Source: almost 2 years ago
  • What skills are great to learn in a home lab for a beginner in IT ?
    GNS3 is a network device emulator, and more than a few devices requires lots of CPU and RAM resources. You need to pay for a licence for each device you want to emulate. Source: about 2 years ago
  • How to escape from Helpdesk hell ?
    Allow me to introduce you to https://gns3.com/. Source: over 2 years ago
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What are some alternatives?

When comparing FlexSim and GNS3, you can also consider the following products

AnyLogic - AnyLogic has changed simulation modeling and expanded its application into complex business environments. The unmatched flexibility of multimethod modeling allows users to capture the complexity of virtually any system, at any level of detail.

Cisco Packet Tracer - Download Cisco Packet Tracer, an innovative network simulation and visualization tool used by Cisco Networking Academy students and instructors.

ns-3 - a discrete-event network simulator for internet systems

NetSim - NetSim software was created to simulate various Cisco systems. Cisco software is known around the world as being one of the best network, routing and switch systems for businesses and private use. Read more about NetSim.

Paessler Multi Server Simulator - Paessler Multi Server Simulator is inexpensive and robust software that helps you power massive-scale testing.

Cloonix - Cloonix is an open-source virtual network creation framework based on KVM licensed under the AGPLv3 license.