Best ThreatOpus Alternatives in 2026
Updated
20 apps from threat modeling software ranked against ThreatOpus on the same published basis.
- 1ThreatOpus vs CAIRIS
- 2ThreatOpus vs OWASP Threat Dragon
- 3ThreatOpus vs ThreatForge
- 4ThreatOpus vs IriusRisk
- 5ThreatOpus vs ThreatModeler Nexus
- 7ThreatOpus vs ThreatTree
- 8ThreatOpus vs AWS Threat Composer
- 9ThreatOpus vs itemis SECURE
- 10ThreatOpus vs pytm
- 11ThreatOpus vs AutoSec TARA Suite
- 12ThreatOpus vs Dethernety
- 13ThreatOpus vs Microsoft Threat Modeling Tool
- 14ThreatOpus vs Threagile
- 15ThreatOpus vs ADTool
- 16ThreatOpus vs EnCo SOX ATA
- 17ThreatOpus vs CYMETRIS
- 18ThreatOpus vs ThreatZ
- 19ThreatOpus vs TSpec
- 20ThreatOpus vs KAVACH
- 21ThreatOpus vs SD Elements
ThreatOpus alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | CAIRIS | 6.6 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 2 | OWASP Threat Dragon | 6.6 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 3 | ThreatForge | 6.6 | Free plan | Free | Linux, Mac, Web, Windows |
| 4 | IriusRisk | 6.4 | Free plan | Free | API, self-hosted, Web |
| 5 | ThreatModeler Nexus | 6.4 | Free plan | $333.33/mo | API, self-hosted, Web |
| 7 | ThreatTree | 6.4 | Free plan | $29/mo | API, Web |
| 8 | AWS Threat Composer | 5.7 | No | — | API, Browser, Linux, Mac, self-hosted, Web, Windows |
| 9 | itemis SECURE | 5.5 | No | — | Web, Windows |
| 10 | pytm | 5.3 | No | — | Windows, Mac, Linux |
| 11 | AutoSec TARA Suite | 5.2 | No | — | Web |
| 12 | Dethernety | 5.2 | No | — | Web |
| 13 | Microsoft Threat Modeling Tool | 5.2 | No | — | Windows |
| 14 | Threagile | 5.2 | No | — | Web |
| 15 | ADTool | 5.1 | No | — | — |
| 16 | EnCo SOX ATA | 5.1 | No | — | — |
| 17 | CYMETRIS | 5.0 | No | €99/mo | API, self-hosted, Web |
| 18 | ThreatZ | 5.0 | No | $8.33/mo | API, self-hosted, Web |
| 19 | TSpec | 4.9 | No | — | — |
| 20 | KAVACH | 4.8 | No | — | — |
| 21 | SD Elements | 4.8 | No | $6,250/mo | API, self-hosted, Web |
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Questions about ThreatOpus alternatives
What is the best alternative to ThreatOpus?
CAIRIS, number 1 in threat modeling software with a score of 6.6 out of 10. The others here: OWASP Threat Dragon, ThreatForge, IriusRisk and 16 more.
What is the best free alternative to ThreatOpus?
CAIRIS is the best-ranked alternative with a free plan. 6 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.