# Opsis OSINT vs StalkPhish.io: side-by-side comparison (2026)

[Opsis OSINT](https://cybersectools.com/tools/opsis-osint) is a commercial [threat intel platforms](https://cybersectools.com/categories/tip) solution by [Opsis](https://cybersectools.com/companies/opsis). [StalkPhish.io](https://cybersectools.com/tools/stalkphishio) is a commercial [threat intel platforms](https://cybersectools.com/categories/tip) solution by [StalkPhish](https://cybersectools.com/companies/stalkphish). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Threat Intelligence Platform Solutions for Business](https://cybersectools.com/shortlists/best-threat-intelligence-platforms) picks Recorded Future Threat Intelligence, Google Threat Intelligence, CrowdStrike Falcon Adversary Intelligence and 4 more.

## Side-by-side comparison

| | Opsis OSINT | StalkPhish.io |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Threat Intel Platforms | Threat Intel Platforms |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | Opsis | StalkPhish |
| Headquarters | – | – |

### Use cases and capabilities

| | Opsis OSINT | StalkPhish.io |
|---|---|---|
| OSINT | Yes | Yes |
| Reconnaissance | Yes | – |
| Search | Yes | – |
| Investigation | Yes | – |
| Social Media | Yes | – |
| Enumeration | Yes | – |
| Fingerprinting | Yes | – |
| GDPR | Yes | – |
| REST API | Yes | Yes |
| Cyber Threat Intelligence | Yes | Yes |
| Threat Feed | – | Yes |
| Fraud Detection | – | Yes |
| URL Scanning | – | Yes |
| Threat Analysis | – | Yes |
| Open Source | – | Yes |
| Threat Actors | – | Yes |
| Remote Access | – | Yes |

### Core features

**Opsis OSINT**

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

**StalkPhish.io**

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

### Integrations

**Opsis OSINT**

No integrations listed.

**StalkPhish.io**

2 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.

- [Opsis OSINT](https://cybersectools.com/tools/opsis-osint) fits if you are a startup.

## Opsis OSINT vs StalkPhish.io FAQ

Common questions when comparing Opsis OSINT vs StalkPhish.io for threat intel platforms.

### What is the difference between Opsis OSINT and StalkPhish.io?

**Opsis OSINT**: OSINT search: find the accounts behind an email, username or domain across 1,000+ sites, built by Opsis.

**StalkPhish.io**: Phishing threat intel platform detecting phishing URLs, kits & brand impersonation, built by StalkPhish.

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

### Who makes Opsis OSINT and StalkPhish.io?

**Opsis OSINT** is made by Opsis. **StalkPhish.io** is made by StalkPhish founded in 2021-01-01T00:00:00.000Z. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Opsis OSINT a good alternative to StalkPhish.io?

Often, yes. Opsis OSINT and StalkPhish.io are both Threat Intel Platforms products, and both cover OSINT, Cyber Threat Intelligence, REST API. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Opsis OSINT vs koat Platform](https://cybersectools.com/compare/koat-platform-vs-opsis-osint)
- [Opsis OSINT vs Nucleon Cyber AGTI Platform](https://cybersectools.com/compare/nucleon-cyber-agti-platform-vs-opsis-osint)
- [Opsis OSINT vs Cypho](https://cybersectools.com/compare/cypho-vs-opsis-osint)
- [StalkPhish.io vs koat Platform](https://cybersectools.com/compare/koat-platform-vs-stalkphishio)
- [StalkPhish.io vs Nucleon Cyber AGTI Platform](https://cybersectools.com/compare/nucleon-cyber-agti-platform-vs-stalkphishio)
- [StalkPhish.io vs Cypho](https://cybersectools.com/compare/cypho-vs-stalkphishio)

## Alternatives to each

- [See all Opsis OSINT alternatives](https://cybersectools.com/alternatives/opsis-osint)
- [See all StalkPhish.io alternatives](https://cybersectools.com/alternatives/stalkphishio)

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Source: https://cybersectools.com/compare/opsis-osint-vs-stalkphishio

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

More on Opsis OSINT and StalkPhish.io: 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