# Safing Portmaster vs Sea Street EdgeSentinel: side-by-side comparison (2026)

[Safing Portmaster](https://cybersectools.com/tools/safing-portmaster) is a free [Next-Gen firewalls](https://cybersectools.com/categories/next-generation-firewalls) solution by [Safing](https://cybersectools.com/companies/safing). [Sea Street EdgeSentinel](https://cybersectools.com/tools/sea-street-edgesentinel) is a commercial [Next-Gen firewalls](https://cybersectools.com/categories/next-generation-firewalls) solution by [Sea Street Technologies](https://cybersectools.com/companies/sea-street-technologies). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Next-Generation Firewall Solutions for Business](https://cybersectools.com/shortlists/best-next-generation-firewalls) picks Palo Alto Networks Next-Generation Firewalls, Fortinet FortiGate Next-Generation Firewall, Cisco Secure Firewall and 4 more.

## Side-by-side comparison

| | Safing Portmaster | Sea Street EdgeSentinel |
|---|---|---|
| Pricing model | Free | Commercial |
| Category | Next-Gen Firewalls | Next-Gen Firewalls |
| Verified | No | No |
| Deployment type | On-Premises | Cloud |
| Company size fit | Startup | SMB, Mid-Market, Enterprise |
| Company | Safing | Sea Street Technologies |
| Headquarters | – | – |

### Use cases and capabilities

| | Safing Portmaster | Sea Street EdgeSentinel |
|---|---|---|
| Linux | Yes | – |
| Open Source | Yes | – |
| Windows | Yes | – |
| Network Monitoring | Yes | Yes |
| Network Protection | – | Yes |
| Threat Feed | – | Yes |
| URL Filtering | – | Yes |
| Content Filtering | – | Yes |
| IP Address | – | Yes |
| Policy | – | Yes |
| Security as a Service | – | Yes |
| Cyber Threat Intelligence | – | Yes |

### Core features

**Safing Portmaster**

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

**Sea Street EdgeSentinel**

7 features 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.

- [Safing Portmaster](https://cybersectools.com/tools/safing-portmaster) fits if you need to run it on your own servers, you are a startup and you need a free product.
- [Sea Street EdgeSentinel](https://cybersectools.com/tools/sea-street-edgesentinel) fits if you want a cloud product and you are a small business or a mid-market company or an enterprise.

## Safing Portmaster vs Sea Street EdgeSentinel FAQ

Common questions when comparing Safing Portmaster vs Sea Street EdgeSentinel for Next-Gen firewalls.

### What is the difference between Safing Portmaster and Sea Street EdgeSentinel?

**Safing Portmaster**: An open-source application firewall that monitors network traffic with custom rules, built by Safing.

**Sea Street EdgeSentinel**: NGFW and network defense platform for service providers to resell as a service, built by Sea Street Technologies.

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

### Who makes Safing Portmaster and Sea Street EdgeSentinel?

**Safing Portmaster** is made by Safing. **Sea Street EdgeSentinel** is made by Sea Street Technologies. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Safing Portmaster a good alternative to Sea Street EdgeSentinel?

Often, yes. Safing Portmaster and Sea Street EdgeSentinel are both Next-Gen Firewalls products, and both cover Network Monitoring. Key differences: Safing Portmaster is Free while Sea Street EdgeSentinel is Commercial. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Safing Portmaster vs Tacitine NGFW](https://cybersectools.com/compare/safing-portmaster-vs-tacitine-ngfw)
- [Safing Portmaster vs IP2Location Firewall IP List](https://cybersectools.com/compare/ip2location-firewall-ip-list-vs-safing-portmaster)
- [Safing Portmaster vs WiJungle Unified Cyber Security Platform](https://cybersectools.com/compare/safing-portmaster-vs-wijungle-unified-cyber-security-platform)
- [Sea Street EdgeSentinel vs Tacitine NGFW](https://cybersectools.com/compare/sea-street-edgesentinel-vs-tacitine-ngfw)
- [Sea Street EdgeSentinel vs IP2Location Firewall IP List](https://cybersectools.com/compare/ip2location-firewall-ip-list-vs-sea-street-edgesentinel)
- [Sea Street EdgeSentinel vs WiJungle Unified Cyber Security Platform](https://cybersectools.com/compare/sea-street-edgesentinel-vs-wijungle-unified-cyber-security-platform)

## Alternatives to each

- [See all Safing Portmaster alternatives](https://cybersectools.com/alternatives/safing-portmaster)
- [See all Sea Street EdgeSentinel alternatives](https://cybersectools.com/alternatives/sea-street-edgesentinel)

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Source: https://cybersectools.com/compare/safing-portmaster-vs-sea-street-edgesentinel

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

More on Safing Portmaster and Sea Street EdgeSentinel: 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