Alternatives
10 best ModSecurity alternatives
Tools that cover the same task as ModSecurity (security), ranked by how completely their pricing, free tier and API access are documented. Checked Oct 4, 2026.
- ModSecurity starts at
- Not listed
- Free plan
- Free plan
- API
- API available
- 01
Pritunl
Pritunl is an open-source enterprise VPN platform for OpenVPN, WireGuard, and IPsec with a web management UI, multi-host clustering over MongoDB, and optional premium features such as SSO and site-to-site links. It targets self-hosted remote access and VPC peering across clouds.
Best for: Infrastructure teams needing self-hosted VPN with horizontal scaling and enterprise authentication options.
- 02
Ory
Ory provides identity, authentication, authorization, and OAuth2/OIDC services through Ory Network and related open-source projects such as Kratos, Hydra, and Keto. The commercial site targets CIAM, B2B IAM, fine-grained permissions, passkeys, and enterprise SSO for applications that need scalable, API-first identity infrastructure.
Best for: Product and platform teams replacing Auth0-style stacks or self-hosting Ory components who need hosted Ory Network production environments.
- 03
Castle
Castle provides SDKs and APIs to detect bots, monitor risky logins, and stop account abuse using device, email, IP, and behavioral intelligence. Teams integrate Castle to score traffic and automate policy actions in web and mobile apps.
Best for: Product and fraud teams at consumer apps that need bot detection, account takeover protection, and IP intelligence without heavy integration friction.
- 04
Cloudanix
Cloudanix is a CNAPP+ platform spanning code, cloud, access, and agentic security on one graph. It offers CSPM, CIEM, workload protection, just-in-time access, coding-agent guardrails, and LLM-native investigation across AWS, Azure, GCP, and Kubernetes with self-serve Pro SKUs and enterprise options.
Best for: Security and platform engineering teams needing unified cloud posture, runtime protection, JIT access, and guardrails for AI coding agents.
- 05
WorkOS
WorkOS helps SaaS companies add enterprise-ready authentication features such as SSO, Directory Sync, MFA, Audit Logs, and AuthKit user management with minimal integration code. The platform targets staging and production environments with modular APIs for B2B customer IT requirements.
Best for: B2B software vendors selling to enterprise customers who need SSO, SCIM, compliance logging, and self-serve IT onboarding.
- 06
Aserto
Aserto provides cloud-native authorization as a service with fine-grained RBAC, ABAC, or ACL enforced in about a millisecond. Developers use SDKs, policy repositories, and authorizer instances to centralize permissions for applications and APIs.
Best for: Teams adding centralized, low-latency authorization to SaaS apps, especially alongside Auth0 or similar identity providers.
- 07
Langfuse
Langfuse is an open-source LLM engineering platform for tracing, evaluating, and improving AI agents with collaborative debugging and metrics. Langfuse Cloud offers hosted Hobby, Core, and Pro tiers metered in observability units.
Best for: AI engineers who need open-source-friendly observability and eval workflows without building tooling in-house.
- 08
Cerbos Hub
Cerbos Hub is Cerbos’s control plane for writing, testing, and deploying authorization policies to PDPs across apps, APIs, and AI workloads. It adds playgrounds, CI validation, policy delivery from Git or Hub, and managed audit logging on top of the open-source Cerbos engine.
Best for: Platform and security engineers externalizing authZ policy who need collaborative testing and staged rollout beyond embedded code checks.
- 09
Ravion
Ravion delivers a Vercel-like experience inside your AWS account for Terraform modules, CI/CD, deployments, previews, logs, and metrics. Teams pay per module category with compute remaining in their own cloud without platform markup on infrastructure.
Best for: Platform engineers and developers who want self-service AWS deployments and Terraform modules with included pipeline tooling.
- 10
Aiven
Aiven is a managed open-source data platform spanning PostgreSQL, Kafka, OpenSearch, ClickHouse, Grafana, and related services. It targets teams that want cloud-hosted databases and streaming infrastructure with transparent plan-based pricing across major hyperscalers.
Best for: Platform engineers who need managed OSS data services without operating their own Kubernetes database operators.
ModSecurity alternatives: common questions
What is the best free alternative to ModSecurity?
Pritunl has an ongoing free plan. Community plan is free for a single host with unlimited users, devices, and VPN servers on that host. Free plans change, so check the vendor before relying on one.
What is the cheapest ModSecurity alternative?
Aserto has the lowest listed starting price at $0.20/mo.
Which ModSecurity alternatives have an API?
Pritunl, Ory, Castle, Cloudanix, WorkOS mention API or developer access.