# FirstWave Open-AudIT vs SurfaceDiff: side-by-side comparison (2026)

[FirstWave Open-AudIT](https://cybersectools.com/tools/firstwave-open-audit) is a commercial [cyber asset attack surface management](https://cybersectools.com/categories/caasm) solution by [FirstWave Cloud Technology](https://cybersectools.com/companies/firstwave-cloud-technology). [SurfaceDiff](https://cybersectools.com/tools/surfacediff) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [SurfaceDiff](https://cybersectools.com/companies/surfacediff). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | FirstWave Open-AudIT | SurfaceDiff |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Cyber Asset Attack Surface Management | External Attack Surface Management |
| Verified | No | No |
| Deployment type | On-Premises | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | FirstWave Cloud Technology | SurfaceDiff |
| Headquarters | – | – |

### Use cases and capabilities

| | FirstWave Open-AudIT | SurfaceDiff |
|---|---|---|
| Network Discovery | Yes | – |
| Configuration Management | Yes | – |
| Network Scanning | Yes | Yes |
| Inventory | Yes | – |
| License Compliance | Yes | – |
| DNS Security | – | Yes |
| Port Scanning | – | Yes |
| TLS | – | Yes |
| Subdomain Enumeration | – | Yes |
| Security Scanning | – | Yes |
| Alerting | – | Yes |
| Reconnaissance | – | Yes |
| Visibility | – | Yes |
| Web Security | – | Yes |

### Core features

**FirstWave Open-AudIT**

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

**SurfaceDiff**

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

### Integrations

**FirstWave Open-AudIT**

1 integration listed. Sign in on the page to see them.

**SurfaceDiff**

No integrations listed.

## Which one fits you

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

- [FirstWave Open-AudIT](https://cybersectools.com/tools/firstwave-open-audit) fits if you need to run it on your own servers.
- [SurfaceDiff](https://cybersectools.com/tools/surfacediff) fits if you want a cloud product and you want the lower starting price (from $19 per month).

## FirstWave Open-AudIT vs SurfaceDiff FAQ

Common questions when comparing FirstWave Open-AudIT vs SurfaceDiff for cyber asset attack surface management.

### What is the difference between FirstWave Open-AudIT and SurfaceDiff?

**FirstWave Open-AudIT**: Agentless network discovery and IT asset auditing tool with config tracking. Built by FirstWave Cloud Technology.

**SurfaceDiff**: Continuous external attack surface monitoring that shows what changed between scans. Built by SurfaceDiff.

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

### Who makes FirstWave Open-AudIT and SurfaceDiff?

**FirstWave Open-AudIT** is made by FirstWave Cloud Technology. **SurfaceDiff** is made by SurfaceDiff. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is FirstWave Open-AudIT a good alternative to SurfaceDiff?

In part. FirstWave Open-AudIT and SurfaceDiff are not in the same category on CybersecTools. Both cover Network Scanning. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [FirstWave Open-AudIT vs Ivanti Neurons for Discovery](https://cybersectools.com/compare/firstwave-open-audit-vs-ivanti-neurons-for-discovery)
- [FirstWave Open-AudIT vs Lansweeper](https://cybersectools.com/compare/firstwave-open-audit-vs-lansweeper)
- [FirstWave Open-AudIT vs ApexaiQ](https://cybersectools.com/compare/apexaiq-vs-firstwave-open-audit)
- [SurfaceDiff vs Ivanti Neurons for Discovery](https://cybersectools.com/compare/ivanti-neurons-for-discovery-vs-surfacediff)
- [SurfaceDiff vs Lansweeper](https://cybersectools.com/compare/lansweeper-vs-surfacediff)
- [SurfaceDiff vs ApexaiQ](https://cybersectools.com/compare/apexaiq-vs-surfacediff)

## Alternatives to each

- [See all FirstWave Open-AudIT alternatives](https://cybersectools.com/alternatives/firstwave-open-audit)
- [See all SurfaceDiff alternatives](https://cybersectools.com/alternatives/surfacediff)

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Source: https://cybersectools.com/compare/firstwave-open-audit-vs-surfacediff

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

More on FirstWave Open-AudIT and SurfaceDiff: 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