Best Days Alternatives in 2026
Updated
20 apps from network simulation software ranked against Days on the same published basis.
- 1Days vs GNS3
- 2Days vs EVE-NG
- 3Days vs NetSim by Tetcos
- 4Days vs OMNeT++
- 5Days vs ns-3
- 6Days vs Containerlab
- 7Days vs IMUNES
- 8Days vs EMANE
- 9Days vs Kathará
- 10Days vs OMNEST
- 11Days vs Common Open Research Emulator (CORE)
- 12Days vs Cisco Packet Tracer
- 13Days vs Cloonix
- 14Days vs Netropy Network Emulator
- 15Days vs MIMIC Simulator
- 16Days vs QuNetSim
- 17Days vs PNETLab
- 18Days vs Mininet
- 19Days vs Mininet-WiFi
- 20Days vs EXata Network Modeling
Days alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | GNS3 | 8.2 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 2 | EVE-NG | 8.2 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 3 | NetSim by Tetcos | 8.1 | Free plan | Free | Windows |
| 4 | OMNeT++ | 8.0 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 5 | ns-3 | 7.9 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 6 | Containerlab | 7.7 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 7 | IMUNES | 7.6 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 8 | EMANE | 7.3 | Free plan | Free | Linux, self-hosted |
| 9 | Kathará | 7.0 | Free plan | Free | API, Linux, Mac, self-hosted, Windows |
| 10 | OMNEST | 6.7 | No | — | API, Linux, Mac, self-hosted, Windows |
| 11 | Common Open Research Emulator (CORE) | 6.6 | No | — | Linux |
| 12 | Cisco Packet Tracer | 6.6 | No | — | Windows, Mac, Linux |
| 13 | Cloonix | 6.4 | Free plan | Free | Linux, Web |
| 14 | Netropy Network Emulator | 6.3 | No | — | Web |
| 15 | MIMIC Simulator | 6.2 | No | — | Windows, Linux |
| 16 | QuNetSim | 6.2 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 17 | PNETLab | 6.0 | No | — | Web, Windows, Mac, Linux |
| 18 | Mininet | 6.0 | No | — | Windows, Mac, Linux |
| 19 | Mininet-WiFi | 5.9 | No | — | Linux |
| 20 | EXata Network Modeling | 5.7 | No | — | Windows, Linux |
Make your app an alternative to Days
See the priceThe sponsored alternative slot on this page is labelled and never changes the order above.
Questions about Days alternatives
What is the best alternative to Days?
GNS3, number 1 in network simulation software with a score of 8.2 out of 10. The others here: EVE-NG, NetSim by Tetcos, OMNeT++ and 16 more.
What is the best free alternative to Days?
GNS3 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 mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.