Best Chaos Engineering Platforms in 2026
Updated
In short: Chaos Toolkit is ranked #1 of 23 as of 7 October 2026, ahead of ChaosBlade and Reliably. The best-ranked option with a free plan is ChaosBlade. The lowest first paid tier on this page is Reliably at £40/mo.
When you need to explore how systems behave under disruption, chaos engineering platforms provide options for configuring fault-injection experiments. Compared on cloud fault injection, network fault injection, and blast-radius controls, they also differ in experiment scheduling and Kubernetes support. Deployment model can help clarify how a platform fits your environment, while free-plan availability and paid-from pricing offer cost context. Chaos Toolkit, ChaosBlade, and Reliably are among the options to consider. Think about which fault types and environments are relevant to your work, then compare the listed controls and scheduling capabilities against those needs.
23 chaos engineering platforms ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
10 of the 23 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | Chaos ToolkitWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | — | 4 of 6 | Free | 6.6 | |
| 2 | ChaosBladeWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | — | 4 of 6 | Free | 6.6 | |
| 3 | ReliablyWeb · Windows · Mac · Linux · Self-hosted | Three bars | — | 4 of 6 | £40/mo | 6.6 | |
| 4 | KrknWeb · Linux · Self-hosted · API | Two bars | — | 2 of 6 | Free | 6.5 | |
| 5 | Chaos MeshWeb · Self-hosted · API | Two bars | — | 1 of 6 | Free | 6.4 | |
| 6 | LitmusChaosWeb · Linux · Self-hosted · API | Two bars | — | 2 of 6 | Free | 6.4 | |
| 7 | PowerfulSealWeb · Self-hosted | Two bars | — | 1 of 6 | Free | 6.4 | |
| 8 | ToxiproxyWindows · Mac · Linux · Self-hosted · API | Two bars | — | 3 of 6 | Free | 5.4 | |
| 9 | TumultWeb · Mac · Linux | One bar | — | — | 3 of 6 | — | 5.4 |
| 10 | Canonical Chaos Engineering PlatformWeb · Linux | No signal | — | — | 2 of 6 | — | 5.3 |
| 11 | KubeInvadersWeb · Self-hosted | One bar | — | — | 1 of 6 | — | 5.3 |
| 12 | AWS Fault Injection ServiceWeb · Windows · Mac · Linux · API | Two bars | — | — | 4 of 6 | — | 5.2 |
| 13 | Chaos Monkey for Spring BootNo platforms listed | One bar | — | — | 0 of 6 | — | 5.2 |
| 14 | chaosdLinux · Self-hosted · API | One bar | — | 1 of 6 | Free | 5.2 | |
| 15 | FaultMeshWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 16 | GremlinWeb · Windows · Linux · Self-hosted · API | Two bars | — | — | 3 of 6 | — | 5.2 |
| 17 | PumbaLinux | No signal | — | — | 1 of 6 | — | 5.2 |
| 18 | SteadybitWeb · Windows · Linux · Self-hosted · API | Two bars | — | — | 3 of 6 | — | 5.2 |
| 19 | ZuulLinux | No signal | — | — | 1 of 6 | — | 5.2 |
| 20 | khaos-monkeyNo platforms listed | No signal | — | — | 0 of 6 | — | 5.1 |
| 21 | Krkn-AINo platforms listed | No signal | — | — | 0 of 6 | — | 5.1 |
| 22 | kube-monkeyNo platforms listed | No signal | — | — | 0 of 6 | — | 5.1 |
| 23 | Tencent Cloud API GatewayWeb · API | Two bars | — | 1 of 6 | Free | 4.8 |
Compare all 23 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Kubernetes support | Cloud fault injection |
|---|---|---|---|---|---|---|---|---|
| 1 | Chaos Toolkit | 6.6 | Free plan | Free | Yes | — | Yes | Yes |
| 2 | ChaosBlade | 6.6 | Free plan | Free | Yes | — | Yes | Yes |
| 3 | Reliably | 6.6 | Free plan | £40/mo | Yes | — | Yes | Yes |
| 4 | Krkn | 6.5 | Free plan | Free | Yes | — | Yes | Yes |
| 5 | Chaos Mesh | 6.4 | Free plan | Free | Yes | — | Yes | Yes |
| 6 | LitmusChaos | 6.4 | Free plan | Free | — | — | Yes | Yes |
| 7 | PowerfulSeal | 6.4 | Free plan | Free | Yes | — | Yes | Yes |
| 8 | Toxiproxy | 5.4 | Free plan | Free | Yes | — | No | No |
| 9 | Tumult | 5.4 | No | — | — | — | Yes | Yes |
| 10 | Canonical Chaos Engineering Platform | 5.3 | No | — | — | — | Yes | No |
| 11 | KubeInvaders | 5.3 | No | — | — | — | Yes | — |
| 12 | AWS Fault Injection Service | 5.2 | No | — | — | — | Yes | Yes |
| 13 | Chaos Monkey for Spring Boot | 5.2 | No | — | Yes | — | — | No |
| 14 | chaosd | 5.2 | Free plan | Free | Yes | — | No | No |
| 15 | FaultMesh | 5.2 | No | — | Yes | 49 /mo | Yes | — |
| 16 | Gremlin | 5.2 | No | — | No | — | Yes | Yes |
| 17 | Pumba | 5.2 | No | — | — | — | Yes | No |
| 18 | Steadybit | 5.2 | No | — | No | — | Yes | Yes |
| 19 | Zuul | 5.2 | No | — | — | — | Yes | Yes |
| 20 | khaos-monkey | 5.1 | No | — | — | — | Yes | No |
| 21 | Krkn-AI | 5.1 | No | — | — | — | Yes | Yes |
| 22 | kube-monkey | 5.1 | No | — | — | — | Yes | No |
| 23 | Tencent Cloud API Gateway | 4.8 | Free plan | Free | No | — | Yes | Yes |
Is your app on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which chaos engineering platform is ranked first on Freedom251?
Chaos Toolkit is ranked #1 of 23 with a score of 6.6. ChaosBlade is second and Reliably third.
How many of these have a free plan?
10 of the 23 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Reliably has the lowest first paid tier we found: £40/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.