Best Breach and Attack Simulation Software in 2026
Updated
In short: OpenAEV is ranked #1 of 19 as of 4 October 2026, ahead of Atomic Red Team and Keysight Eggplant Test. The best-ranked option with a free plan is Atomic Red Team.
Breach and attack simulation software lets security teams examine defenses using simulated attack activity. Compared on attack simulation modes and included attack surfaces, the entries also cover custom attack scenarios, continuous scheduling, and scenario library size. MITRE ATT&CK mapping and deployment model add operational considerations, while free-plan and paid-from details can help clarify access. OpenAEV and Atomic Red Team appear among the first entries, along with Keysight Eggplant Test and Cymulate Platform. Compare the listed approaches with the exercises and environment your team needs to support.
19 breach and attack simulation software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Breach and Attack Simulation Software, ranked on how quickly a newcomer can get going. 8 of the 19 on this page can be tried for free.
- 1 OpenAEVFree plan
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 2 Atomic Red TeamFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 3 Keysight Eggplant Test
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: yes
- 4 Cymulate Platform
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 5 Picus Security Platform
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: yes
- 6 SCYTHE
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: yes
- 7 Valitrix BAS Platform
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: yes
- 8 Skyhawk Security BAS
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 9 Pentera Platform
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 10 BlackNoise BAS
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 11 Infection Monkey
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: yes
- 12 Stratus Red Team
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: yes
- 13 MITRE Caldera
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: yes
- 14 SafeBreach Validate
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 15 FourCore ATTACK
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 16 PurpleSharp
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 17 Cymrix
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 18 AttackIQ Platform
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 19 ShadowBreach
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which breach and attack simulation software is ranked first on The Geeks Club?
OpenAEV is ranked #1 of 19 with a score of 7.8. Atomic Red Team is second and Keysight Eggplant Test third.
How many of these have a free plan?
2 of the 19 on this page publish a free plan on their own pricing pages.
How is this list ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on. Paid placements never change a rank.