# altdns vs MoreSec Sentry Cloud: side-by-side comparison (2026)

[altdns](https://cybersectools.com/tools/altdns) is a free [external attack surface management](https://cybersectools.com/categories/external-asm) solution. [MoreSec Sentry Cloud](https://cybersectools.com/tools/moresec-sentry-cloud) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [默安科技 (MoreSec)](https://cybersectools.com/companies/moresec). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Attack Surface Management Solutions for Business](https://cybersectools.com/shortlists/best-attack-surface-solutions) picks Palo Alto Networks Cortex Xpanse, Microsoft Defender EASM, Mandiant Attack Surface Management and 4 more.

## Side-by-side comparison

| | altdns | MoreSec Sentry Cloud |
|---|---|---|
| Pricing model | Free | Commercial |
| Category | External Attack Surface Management | External Attack Surface Management |
| Verified | No | No |
| Deployment type | On-Premises | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| GitHub stars | 2,439 | – |
| Last commit | Jan 2025 | – |
| Company | – | 默安科技 (MoreSec) |
| Headquarters | – | – |

### Use cases and capabilities

| | altdns | MoreSec Sentry Cloud |
|---|---|---|
| Reconnaissance | Yes | – |
| Vulnerability | – | Yes |
| Network Discovery | – | Yes |
| Attack Detection | – | Yes |
| Data Breach | – | Yes |
| Dark Web Monitoring | – | Yes |
| Inventory | – | Yes |
| AI SOC | – | Yes |
| Anomaly Detection | – | Yes |
| Alerting | – | Yes |
| Vulnerability Prioritization | – | Yes |

### Core features

**altdns**

No features listed.

**MoreSec Sentry Cloud**

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

### Integrations

**altdns**

No integrations listed.

**MoreSec Sentry Cloud**

1 integration 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.

- [altdns](https://cybersectools.com/tools/altdns) fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product.
- [MoreSec Sentry Cloud](https://cybersectools.com/tools/moresec-sentry-cloud) fits if you want a cloud product.

## altdns vs MoreSec Sentry Cloud FAQ

Common questions when comparing altdns vs MoreSec Sentry Cloud for external attack surface management.

### What is the difference between altdns and MoreSec Sentry Cloud?

**altdns**: A tool for generating permutations, alterations and mutations of subdomains and resolving them.

**MoreSec Sentry Cloud**: AI-driven asset discovery and vulnerability risk monitoring system by MoreSec. Built by 默安科技 (MoreSec).

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

### Who makes altdns and MoreSec Sentry Cloud?

**altdns** is open-source with 2,439 GitHub stars. **MoreSec Sentry Cloud** is made by 默安科技 (MoreSec). The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is altdns a good alternative to MoreSec Sentry Cloud?

Often, yes. altdns and MoreSec Sentry Cloud are both External Attack Surface Management products. Key differences: altdns is Free while MoreSec Sentry Cloud is Commercial, altdns is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [altdns vs Attaxion](https://cybersectools.com/compare/altdns-vs-attaxion)
- [altdns vs ArmorPoint Attack Surface Management](https://cybersectools.com/compare/altdns-vs-armorpoint-attack-surface-management)
- [altdns vs DarkInvader EASM Platform](https://cybersectools.com/compare/altdns-vs-darkinvader-easm-platform)
- [MoreSec Sentry Cloud vs Attaxion](https://cybersectools.com/compare/attaxion-vs-moresec-sentry-cloud)
- [MoreSec Sentry Cloud vs ArmorPoint Attack Surface Management](https://cybersectools.com/compare/armorpoint-attack-surface-management-vs-moresec-sentry-cloud)
- [MoreSec Sentry Cloud vs DarkInvader EASM Platform](https://cybersectools.com/compare/darkinvader-easm-platform-vs-moresec-sentry-cloud)

## Alternatives to each

- [See all altdns alternatives](https://cybersectools.com/alternatives/altdns)
- [See all MoreSec Sentry Cloud alternatives](https://cybersectools.com/alternatives/moresec-sentry-cloud)

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Source: https://cybersectools.com/compare/altdns-vs-moresec-sentry-cloud

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

More on altdns and MoreSec Sentry Cloud: 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