# Data Theorem AppSec vs depthfirst Platform: side-by-side comparison (2026)

[Data Theorem AppSec](https://cybersectools.com/tools/data-theorem-appsec) is a commercial [application security posture management](https://cybersectools.com/categories/aspm) solution by [Data Theorem](https://cybersectools.com/companies/data-theorem). [depthfirst Platform](https://cybersectools.com/tools/depthfirst) is a commercial [application security posture management](https://cybersectools.com/categories/aspm) solution by [Depthfirst](https://cybersectools.com/companies/depthfirst). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Data Theorem AppSec | depthfirst Platform |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Application Security Posture Management | Application Security Posture Management |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | Data Theorem | Depthfirst |
| Headquarters | – | – |

### Use cases and capabilities

| | Data Theorem AppSec | depthfirst Platform |
|---|---|---|
| App Security | Yes | – |
| DAST | Yes | Yes |
| DevSecOps | Yes | – |
| SCA | – | Yes |
| Secret Detection | – | Yes |
| Supply Chain Security | – | Yes |
| Attack Paths | – | Yes |
| CI/CD | – | Yes |
| Vulnerability Prioritization | – | Yes |
| Source Code Analysis | – | Yes |
| Software Supply Chain | – | Yes |

### Core features

**Data Theorem AppSec**

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

**depthfirst Platform**

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

## Data Theorem AppSec vs depthfirst Platform FAQ

Common questions when comparing Data Theorem AppSec vs depthfirst Platform for application security posture management.

### What is the difference between Data Theorem AppSec and depthfirst Platform?

**Data Theorem AppSec**: AppSec platform for mobile, web, API & cloud security testing & protection. Built by Data Theorem.

**depthfirst Platform**: AI-powered AppSec platform for code, supply chain, secrets & DAST. Built by Depthfirst.

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

### Who makes Data Theorem AppSec and depthfirst Platform?

**Data Theorem AppSec** is made by Data Theorem. **depthfirst Platform** is made by Depthfirst. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Data Theorem AppSec a good alternative to depthfirst Platform?

Often, yes. Data Theorem AppSec and depthfirst Platform are both Application Security Posture Management products, and both cover DAST. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Data Theorem AppSec vs Cantina Apex](https://cybersectools.com/compare/cantina-apex-vs-data-theorem-appsec)
- [Data Theorem AppSec vs Legit VibeGuard](https://cybersectools.com/compare/data-theorem-appsec-vs-legit-vibeguard)
- [Data Theorem AppSec vs Start Left™ SaaS Security Mgmt Platform](https://cybersectools.com/compare/data-theorem-appsec-vs-start-lefttm-saas-security-mgmt-platform)
- [depthfirst Platform vs Cantina Apex](https://cybersectools.com/compare/cantina-apex-vs-depthfirst)
- [depthfirst Platform vs Legit VibeGuard](https://cybersectools.com/compare/depthfirst-vs-legit-vibeguard)
- [depthfirst Platform vs Start Left™ SaaS Security Mgmt Platform](https://cybersectools.com/compare/depthfirst-vs-start-lefttm-saas-security-mgmt-platform)

## Alternatives to each

- [See all Data Theorem AppSec alternatives](https://cybersectools.com/alternatives/data-theorem-appsec)
- [See all depthfirst Platform alternatives](https://cybersectools.com/alternatives/depthfirst)

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Source: https://cybersectools.com/compare/data-theorem-appsec-vs-depthfirst

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

More on Data Theorem AppSec and depthfirst Platform: 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