Best Days Alternatives in 2026
Updated
20 apps from network simulation software ranked against Days on the same published basis.
- 1Days vs EVE-NG
- 2Days vs IMUNES
- 3Days vs Containerlab
- 4Days vs GNS3
- 5Days vs OMNeT++
- 6Days vs Kathará
- 7Days vs ns-3
- 8Days vs QuNetSim
- 9Days vs Cloonix
- 10Days vs EMANE
- 11Days vs NetSim by Tetcos
- 12Days vs OMNEST
- 13Days vs PacketStorm Network Emulators
- 14Days vs PNETLab
- 15Days vs Cisco Packet Tracer
- 16Days vs Marionnet
- 17Days vs Mininet
- 18Days vs Common Open Research Emulator (CORE)
- 19Days vs Mininet-WiFi
- 20Days vs Shadow
Days alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | EVE-NG | 6.7 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 2 | IMUNES | 6.7 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 3 | Containerlab | 6.6 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 4 | GNS3 | 6.6 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 5 | OMNeT++ | 6.6 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 6 | Kathará | 6.5 | Free plan | Free | API, Linux, Mac, self-hosted, Windows |
| 7 | ns-3 | 6.5 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 8 | QuNetSim | 6.5 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 9 | Cloonix | 6.4 | Free plan | Free | Linux, Web |
| 10 | EMANE | 6.4 | Free plan | Free | Linux, self-hosted |
| 11 | NetSim by Tetcos | 6.4 | Free plan | Free | Windows |
| 12 | OMNEST | 5.6 | No | — | API, Linux, Mac, self-hosted, Windows |
| 13 | PacketStorm Network Emulators | 5.4 | No | — | Web, Windows, Mac, Linux |
| 14 | PNETLab | 5.4 | No | — | Web, Windows, Mac, Linux |
| 15 | Cisco Packet Tracer | 5.3 | No | — | Windows, Mac, Linux |
| 16 | Marionnet | 5.3 | No | — | Linux, Windows, Mac |
| 17 | Mininet | 5.3 | No | — | API, Linux, Mac, self-hosted, Windows |
| 18 | Common Open Research Emulator (CORE) | 5.2 | No | — | Linux |
| 19 | Mininet-WiFi | 5.2 | No | — | Linux |
| 20 | Shadow | 5.2 | No | — | Linux |
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Questions about Days alternatives
What is the best alternative to Days?
EVE-NG, number 1 in network simulation software with a score of 6.7 out of 10. The others here: IMUNES, Containerlab, GNS3 and 16 more.
What is the best free alternative to Days?
EVE-NG is the best-ranked alternative with a free plan. 11 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.