The Best Network Simulation Software in 2026
We researched network simulation software through official websites, including pricing pages, plan tables, and product documentation. Rankings reflect each product’s core simulation capabilities, value for money, and verified features for modeling topologies, protocols, traffic, and real-world network behavior.
Our top picks
-
Top ranked
GNS3#1 of 309.4/10A free, broad multivendor lab for simulating, emulating, and connecting real networks.
Free plan
-
Runner-up
Cisco Modeling Labs#2 of 309.2/10A Cisco-focused virtual lab with broad automation, integration, and deployment options.
Free plan
-
Top-ranked free plan
EVE-NG#3 of 309.0/10A broad emulation platform for large, collaborative multivendor network labs.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 30 tools, best first
-
Best forFree, broad multivendor network labs
A free, broad multivendor lab for simulating, emulating, and connecting real networks.
- Hardware-in-the-loop
- Real-time emulation
- Automation API
9.4/10★★★★★Visit GNS3 -
Best forTeams needing Cisco-focused lab automation
A Cisco-focused virtual lab with broad automation, integration, and deployment options.
- Automation API
9.2/10★★★★★Visit Cisco CML -
Best forLarge multivendor browser-based labs
A broad emulation platform for large, collaborative multivendor network labs.
- Hardware-in-the-loop
- Real-time emulation
- Automation API
9.0/10★★★★☆Visit EVE-NG -
Best forResearch-grade protocol and wireless simulation
A research-focused simulator for detailed wired, wireless, and emulated network studies.
- Hardware-in-the-loop
- Real-time emulation
- Automation API
Free plan · pricing on request Our NetSim by Tetcos verdict → Visit NetSimFor vendors Sponsor this spot · #4 · $69/mo →8.9/10★★★★☆Visit NetSim -
Best forMature academic and engineering simulation
A mature, broad network simulation framework for academic and engineering teams.
- Hardware-in-the-loop
- Real-time emulation
- Automation API
Free plan · pricing on request Our OMNeT++ verdict → Visit OMNeT++For vendors Sponsor this spot · #5 · $59/mo →8.8/10★★★★☆Visit OMNeT++ -
Best forOpen-source discrete-event research
A free, research-focused simulator with broad network models and desktop-based workflows.
- Real-time emulation
- Automation API
8.7/10★★★★☆Visit ns-3 -
Best forAutomated containerized network labs
A capable open-source choice for automated, multivendor network lab orchestration.
8.6/10★★★★☆Visit Containerlab -
Best forLinux-based real-time network emulation
A flexible Linux emulator for topology design, protocol research, and hardware-in-the-loop work.
- Hardware-in-the-loop
- Real-time emulation
- Automation API
8.5/10★★★★☆Visit CORE -
Best forBeginners learning network fundamentals
A free, guided network simulator for building foundational networking skills.
- Automation API
8.4/10★★★★☆Visit Cisco -
Best forHigh-scale Linux network emulation
A free, high-scale network emulation framework for Linux and FreeBSD experiments.
- Hardware-in-the-loop
- Real-time emulation
- Automation API
8.3/10★★★★☆Visit IMUNES -
Best forWAN impairment testing teams
Focused real-time WAN emulation with automation, replay, and flexible deployment options.
- Real-time emulation
- Automation API
8.2/10★★★★☆Visit Apposite -
Best forLarge-scale SNMP monitoring tests
A specialized server emulator for large-scale SNMP management and regression testing.
- Real-time emulation
- Automation API
8.1/10★★★★☆Visit MIMIC -
Best forDistributed wireless and radio emulation
A Linux-based framework for detailed, distributed wireless and radio emulation.
- Real-time emulation
- Automation API
8.0/10★★★★☆Visit EMANE -
Best forCommercial discrete-event simulation projects
A commercial simulation framework with strong modeling, analysis, and integration depth.
- Hardware-in-the-loop
- Real-time emulation
- Automation API
7.9/10★★★★☆Visit OMNEST -
Best forFree browser-based virtual network labs
A broad free lab platform with strong device, Docker, and packet-capture support.
7.8/10★★★★☆Visit PNETLab -
Best forOpenFlow and SDN experimentation
A focused, free emulator for OpenFlow, Open vSwitch, and SDN experimentation.
- Automation API
7.7/10★★★★☆Visit Mininet -
Best forPortable container-based network scenarios
A portable, programmable way to model multi-device network scenarios with containers.
- Automation API
7.6/10★★★★☆Visit Kathará -
Best forLinux wireless emulation experiments
A focused Linux emulator for programmable Wi-Fi topologies, mobility, and wireless behavior.
- Automation API
7.4/10★★★★☆Visit Mininet-WiFi -
Best forDefense and RF digital-twin programs
A hybrid network simulation and emulation environment for defense and RF programs.
- Hardware-in-the-loop
- Real-time emulation
7.3/10★★★★☆Visit Keysight -
Best forDeterministic Linux application experiments
A free, deterministic Linux simulator for testing unmodified networked applications.
- Automation API
7.2/10★★★★☆Visit Shadow -
Best forCloud networking practice and guided labs
A web simulator with multi-vendor CLI practice, labs, AI assistance, and LMS support.
7.1/10★★★★☆Visit NetSim -
Best forHTTP and link-condition emulation
A focused, free Linux toolkit for controlled link-condition and HTTP replay workflows.
- Automation API
7.0/10★★★★☆Visit Mahimahi -
Best forEnterprise WAN/LAN impairment testing
A hardware-based choice for repeatable WAN and LAN impairment testing.
- Hardware-in-the-loop
- Real-time emulation
6.9/10★★★☆☆Visit PacketStorm -
Best forLinux KVM and container topology labs
A focused open-source lab for Linux KVM, crun, and Open vSwitch network emulation.
- Automation API
6.8/10★★★☆☆Visit Cloonix -
Best forSimple graphical Linux network emulation
A clear, free way to emulate Linux networks visually, with limited advanced automation.
6.7/10★★★☆☆Visit Marionnet -
Best forData-center congestion-model researchers
A focused Rust simulator for packet-level studies of congestion, queues, and topologies.
- Automation API
6.5/10★★★☆☆Visit Days -
Best forQuantum network simulation researchers
A focused, open-source choice for learning and prototyping quantum network protocols.
- Automation API
6.4/10★★★☆☆Visit QuNetSim -
Best forCloud-hosted collaborative simulations
A collaborative cloud emulation platform with topology tools, APIs, and Python automation.
- Automation API
6.2/10★★★☆☆Visit NVIDIA DSX Air -
Best forBasic desktop video editing and processing
Avidemux is useful for basic video processing, not network simulation.
1.0/10☆☆☆☆☆Visit Avidemux -
Best formacOS users needing a SIP softphone
A focused macOS SIP client, not a network simulation tool.
0.9/10☆☆☆☆☆Visit Telephone
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Simulation model | Deployment options | Score |
|---|---|---|---|---|---|---|
| 1 | GNS3 | Yes | Free | Hybrid | Desktop | 9.4 |
| 2 | Cisco Modeling Labs | Yes | Server | 9.2 | ||
| 3 | EVE-NG | Yes | €150/yr | Emulation | Server | 9.0 |
| 4 | NetSim by Tetcos | Yes | Discrete-event | Desktop | 8.9 | |
| 5 | OMNeT++ | Yes | Discrete-event | Desktop | 8.8 | |
| 6 | ns-3 | Yes | Free | Discrete-event | Desktop | 8.7 |
| 7 | Containerlab | Free | 8.6 | |||
| 8 | Common Open Research Emulator (CORE) | Free | Emulation | 8.5 | ||
| 9 | Cisco Packet Tracer | Yes | Free | Desktop | 8.4 | |
| 10 | IMUNES | Yes | Free | Emulation | Desktop | 8.3 |
| 11 | Netropy Network Emulator | No | Emulation | Server | 8.2 | |
| 12 | MIMIC Simulator | No | Emulation | Server | 8.1 | |
| 13 | EMANE | Yes | Free | Emulation | Server | 8.0 |
| 14 | OMNEST | No | Discrete-event | Desktop | 7.9 | |
| 15 | PNETLab | Yes | Free | Emulation | Server | 7.8 |
| 16 | Mininet | Yes | Free | Emulation | Server | 7.7 |
| 17 | Kathará | Yes | Free | Emulation | Desktop | 7.6 |
| 18 | Mininet-WiFi | Yes | Free | Emulation | Server | 7.4 |
| 19 | EXata Network Modeling | No | Hybrid | Desktop | 7.3 | |
| 20 | Shadow | Yes | Free | Hybrid | 7.2 | |
| 21 | NetSim | Yes | $15/mo | Cloud | 7.1 | |
| 22 | Mahimahi | Yes | Free | Emulation | 7.0 | |
| 23 | PacketStorm Network Emulators | Emulation | 6.9 | |||
| 24 | Cloonix | Free | Emulation | Server | 6.8 | |
| 25 | Marionnet | Yes | Free | Emulation | Desktop | 6.7 |
| 26 | Days | Free | Discrete-event | 6.5 | ||
| 27 | QuNetSim | Free | Discrete-event | Desktop | 6.4 | |
| 28 | NVIDIA DSX Air | No | Emulation | Cloud | 6.2 | |
| 29 | Avidemux | Yes | Free | 1.0 | ||
| 30 | Telephone | Yes | 0.9 |
Head-to-head All 28 comparisons →
- GNS3 vs Cisco Modeling Labs
- GNS3 vs EVE-NG
- GNS3 vs NetSim by Tetcos
- GNS3 vs OMNeT++
- GNS3 vs ns-3
- GNS3 vs Containerlab
- GNS3 vs Common Open Research Emulator (CORE)
- Cisco Modeling Labs vs EVE-NG
- Cisco Modeling Labs vs NetSim by Tetcos
Explore other topics All topics →
- AI Tools 303 directories · 8,270 tools ranked AI Writing Tools · AI Video Generators · Text-to-Speech Software
- Web Hosting & Domains 275 directories · 6,107 tools ranked Shared Web Hosting · Managed Cloud Hosting · Dedicated Server Hosting
- Productivity 157 directories · 4,948 tools ranked Note-Taking Apps · Calendar Apps · Project Management Software
- Marketing 135 directories · 3,977 tools ranked SEO Tools · Influencer Marketing Platforms · Email Marketing Software
- Sales & CRM 152 directories · 4,161 tools ranked Real Estate CRM Software · CRM Software · Proposal Software
- Customer Service 55 directories · 1,547 tools ranked Chatbot Builders · Knowledge Base Software · Call Center Software
How we rank network simulation software
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update