Aqua Security Cloud VM Security vs Subgraph Citadel / Subgraph OS: Side-by-Side Comparison (2026)

Aqua Security Cloud VM Security: VM security for cloud environments with compliance, runtime protection & monitoring. built by Aqua Security Software Ltd.. Core capabilities include Vulnerability scanning and malware detection for cloud VMs, CIS Benchmark compliance assessment for Linux, Real-time VM configuration monitoring and drift prevention..

Subgraph Citadel / Subgraph OS: Immutable, compartmentalized Linux OS for adversarial computing environments. built by Subgraph. Core capabilities include Read-only immutable base OS protected by dm-verity cryptographic integrity verification, Unlimited isolated user realms with separate process, network, and filesystem namespaces, Container-based realm isolation using Linux namespaces and cgroups..

Both serve the Workload Protection market but differ in approach, feature depth, and target audience.

Aqua Security Cloud VM Security differentiates with Vulnerability scanning and malware detection for cloud VMs, CIS Benchmark compliance assessment for Linux, Real-time VM configuration monitoring and drift prevention. Subgraph Citadel / Subgraph OS differentiates with Read-only immutable base OS protected by dm-verity cryptographic integrity verification, Unlimited isolated user realms with separate process, network, and filesystem namespaces, Container-based realm isolation using Linux namespaces and cgroups.

Aqua Security Cloud VM Security is developed by Aqua Security Software Ltd.. Subgraph Citadel / Subgraph OS is developed by Subgraph. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Aqua Security Cloud VM Security and Subgraph Citadel / Subgraph OS serve similar Workload Protection use cases: both are Workload Protection tools, both cover Workload Security. Key differences: Aqua Security Cloud VM Security is Commercial while Subgraph Citadel / Subgraph OS is Free. Review the feature comparison above to determine which fits your requirements.