# CyStack Endpoint vs Theodosian: side-by-side comparison (2026)

[CyStack Endpoint](https://cybersectools.com/tools/cystack-endpoint) is a commercial [data loss prevention](https://cybersectools.com/categories/dlp) solution by [CyStack](https://cybersectools.com/companies/cystack). [Theodosian](https://cybersectools.com/tools/theodosian) is a commercial [data loss prevention](https://cybersectools.com/categories/dlp) solution by [Theodosian](https://cybersectools.com/companies/theodosian). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | CyStack Endpoint | Theodosian |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Data Loss Prevention | Data Loss Prevention |
| Verified | No | No |
| Deployment type | On-Premises | Hybrid |
| Company size fit | Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | CyStack | Theodosian |
| Headquarters | – | – |

### Use cases and capabilities

| | CyStack Endpoint | Theodosian |
|---|---|---|
| Data Exfiltration | Yes | – |
| Security Policy | Yes | – |
| Ransomware Prevention | Yes | – |
| Content Filtering | Yes | – |
| Patch Management | Yes | – |
| Remote Desktop | Yes | – |
| BYOD | Yes | – |
| Sensitive Data | Yes | – |
| File Analysis | – | Yes |

### Core features

**CyStack Endpoint**

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

**Theodosian**

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

### Integrations

**CyStack Endpoint**

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

**Theodosian**

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

## Which one fits you

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

- [CyStack Endpoint](https://cybersectools.com/tools/cystack-endpoint) fits if you need to run it on your own servers.
- [Theodosian](https://cybersectools.com/tools/theodosian) fits if you need both cloud and on-premises options and you are a startup or a small business.

## CyStack Endpoint vs Theodosian FAQ

Common questions when comparing CyStack Endpoint vs Theodosian for data loss prevention.

### What is the difference between CyStack Endpoint and Theodosian?

**CyStack Endpoint**: Endpoint DLP, device mgmt & security policy enforcement for enterprises. Built by CyStack.

**Theodosian**: File-level encryption and access control for data-centric security. Built by Theodosian.

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

### Who makes CyStack Endpoint and Theodosian?

**CyStack Endpoint** is made by CyStack. **Theodosian** is made by Theodosian. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is CyStack Endpoint a good alternative to Theodosian?

Often, yes. CyStack Endpoint and Theodosian are both Data Loss Prevention products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [CyStack Endpoint vs Kitecyber Data Security Platform](https://cybersectools.com/compare/cystack-endpoint-vs-kitecyber-data-shield-device-shield-app-shield)
- [CyStack Endpoint vs SquareX Clipboard DLP](https://cybersectools.com/compare/cystack-endpoint-vs-squarex-clipboard-dlp)
- [CyStack Endpoint vs Nightfall Data Loss Prevention](https://cybersectools.com/compare/cystack-endpoint-vs-nightfall-data-loss-prevention)
- [Theodosian vs Kitecyber Data Security Platform](https://cybersectools.com/compare/kitecyber-data-shield-device-shield-app-shield-vs-theodosian)
- [Theodosian vs SquareX Clipboard DLP](https://cybersectools.com/compare/squarex-clipboard-dlp-vs-theodosian)
- [Theodosian vs Nightfall Data Loss Prevention](https://cybersectools.com/compare/nightfall-data-loss-prevention-vs-theodosian)

## Alternatives to each

- [See all CyStack Endpoint alternatives](https://cybersectools.com/alternatives/cystack-endpoint)
- [See all Theodosian alternatives](https://cybersectools.com/alternatives/theodosian)

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Source: https://cybersectools.com/compare/cystack-endpoint-vs-theodosian

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/cystack-endpoint.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on CyStack Endpoint and Theodosian: 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