Anonomatic PII Vault vs Themis: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
Anonomatic PII Vault is a commercial data masking tool by Anonomatic. Themis is a free data masking tool. Compare features, ratings, integrations, and community reviews side by side to find the best data masking fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Organizations handling sensitive customer or employee data at scale need Anonomatic PII Vault specifically for its PolyAnonymization approach, which lets you use de-identified datasets for analytics and testing without maintaining separate production environments. The patented Data Sundering storage technology paired with three-tiered key rotation delivers real separation of PII from operational data, addressing the ID.AM and PR.DS gaps most competitors leave open. Skip this if you need cloud deployment or multi-tenant SaaS simplicity; the on-premises Docker architecture assumes you have infrastructure ops capacity and want custody of encryption keys.
Development teams building applications that handle sensitive authentication data or need encryption primitives without vendor lock-in should start with Themis. It's open-source with 1,954 GitHub stars and provides cryptographic services across authentication, storage, and messaging in a single library, letting you avoid piecing together multiple dependencies. The tradeoff: Themis is a low-level building block, not a managed data masking platform; it requires engineering effort to integrate and won't give you the policy engine or compliance reporting that off-the-shelf data masking tools provide.
