# Fortanix Data Security Manager vs Themis: side-by-side comparison (2026)

[Fortanix Data Security Manager](https://cybersectools.com/tools/fortanix-data-security-manager) is a commercial [key management](https://cybersectools.com/categories/key-management) solution by [Fortanix](https://cybersectools.com/companies/fortanix). [Themis](https://cybersectools.com/tools/themis) is a free [key management](https://cybersectools.com/categories/key-management) solution. Features, integrations, deployment and the company behind each one, side by side.

## Our take

What our shortlists say about the one we picked.

### [Fortanix Data Security Manager](https://cybersectools.com/tools/fortanix-data-security-manager)

Best for: Enterprises with keys in several clouds and data centers

It is here because one console applies the same key policies on premises and in the cloud, with keys kept on HSMs. It fits large enterprises with keys spread across several clouds and data centers. Since it also covers tokenization and secrets, decide early whether you want it to replace other products or only manage keys.

From [Best Key Management Solutions for Business](https://cybersectools.com/shortlists/best-key-management-solutions), Fall 2026.

Reviewed by [Nika (Nikoloz) Kokhreidze](https://cybersectools.com/about).

Need the answer fast? [Best Key Management Solutions for Business](https://cybersectools.com/shortlists/best-key-management-solutions) picks Thales CipherTrust Manager, Fortanix Data Security Manager, Futurex CryptoHub and 3 more.

## Side-by-side comparison

| | Fortanix Data Security Manager | Themis |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Key Management | Key Management |
| Verified | No | No |
| Deployment type | Hybrid | On-Premises |
| Company size fit | Enterprise | Startup, SMB, Mid-Market, Enterprise |
| GitHub stars | – | 1,954 |
| Last commit | – | Sep 2024 |
| Company | Fortanix | – |
| Headquarters | – | – |

### Use cases and capabilities

| | Fortanix Data Security Manager | Themis |
|---|---|---|
| Encryption | Yes | Yes |
| Key Management | Yes | – |
| Open Source | – | Yes |

### Core features

**Fortanix Data Security Manager**

10 features listed. Sign in on the page to see them.

**Themis**

No features listed.

### Integrations

**Fortanix Data Security Manager**

10 integrations listed. Sign in on the page to see them.

**Themis**

No integrations listed.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [Fortanix Data Security Manager](https://cybersectools.com/tools/fortanix-data-security-manager) fits if you need both cloud and on-premises options.
- [Themis](https://cybersectools.com/tools/themis) fits if you need to run it on your own servers, you are a startup or a small business or a mid-market company, you need a free product and you want an open-source product.

## Fortanix Data Security Manager vs Themis FAQ

Common questions when comparing Fortanix Data Security Manager vs Themis for key management.

### What is the difference between Fortanix Data Security Manager and Themis?

**Fortanix Data Security Manager**: Manages encryption keys across hybrid and multicloud systems, with HSM-backed storage. Built by Fortanix.

**Themis**: Themis is an open-source cryptographic services library that provides high-level encryption and data protection capabilities for securing data during authentication, storage, messaging, and network exchange.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Fortanix Data Security Manager and Themis?

**Fortanix Data Security Manager** is made by Fortanix. **Themis** is open-source with 1,954 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Fortanix Data Security Manager a good alternative to Themis?

Often, yes. Fortanix Data Security Manager and Themis are both Key Management products, and both cover Encryption. Key differences: Fortanix Data Security Manager is Commercial while Themis is Free, Themis is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Fortanix Data Security Manager vs Qx™ Applications (QxApps™)](https://cybersectools.com/compare/fortanix-data-security-manager-vs-qxtm-applications-qxappstm)
- [Fortanix Data Security Manager vs Fornetix VaultCore](https://cybersectools.com/compare/fornetix-vaultcore-vs-fortanix-data-security-manager)
- [Fortanix Data Security Manager vs Futurex CryptoHub](https://cybersectools.com/compare/fortanix-data-security-manager-vs-futurex-key-management-solutions-kms)
- [Themis vs Qx™ Applications (QxApps™)](https://cybersectools.com/compare/qxtm-applications-qxappstm-vs-themis)
- [Themis vs Fornetix VaultCore](https://cybersectools.com/compare/fornetix-vaultcore-vs-themis)
- [Themis vs Futurex CryptoHub](https://cybersectools.com/compare/futurex-key-management-solutions-kms-vs-themis)

## Alternatives to each

- [See all Fortanix Data Security Manager alternatives](https://cybersectools.com/alternatives/fortanix-data-security-manager)
- [See all Themis alternatives](https://cybersectools.com/alternatives/themis)

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Source: https://cybersectools.com/compare/fortanix-data-security-manager-vs-themis

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More on Fortanix Data Security Manager and Themis: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md