# CSS for IIS vs threatER: side-by-side comparison (2026)

[CSS for IIS](https://cybersectools.com/tools/css-for-iis) is a commercial [workload protection](https://cybersectools.com/categories/workload-protection) solution by [CalCom Software](https://cybersectools.com/companies/calcom-software). [threatER](https://cybersectools.com/tools/threater) is a commercial [intrusion detection and prevention systems](https://cybersectools.com/categories/idps) solution by [threatER](https://cybersectools.com/companies/threater). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | CSS for IIS | threatER |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Workload Protection | Intrusion Detection and Prevention Systems |
| Verified | No | No |
| Deployment type | On-Premises | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | CalCom Software | threatER |
| Headquarters | – | – |

### Use cases and capabilities

| | CSS for IIS | threatER |
|---|---|---|
| Security Hardening | Yes | – |
| Configuration Management | Yes | – |
| Microsoft | Yes | – |
| Policy | Yes | – |
| Security Configuration | Yes | – |
| Benchmark | Yes | – |
| Windows Security | Yes | – |
| DNS Security | – | Yes |
| Content Filtering | – | Yes |
| Threat Feed | – | Yes |
| IoT Security | – | Yes |
| Network Protection | – | Yes |
| Traffic Filtering | – | Yes |

### Core features

**CSS for IIS**

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

**threatER**

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

### Integrations

**CSS for IIS**

2 integrations listed. Sign in on the page to see them.

**threatER**

3 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.

- [CSS for IIS](https://cybersectools.com/tools/css-for-iis) fits if you need to run it on your own servers.
- [threatER](https://cybersectools.com/tools/threater) fits if you want a cloud product and you are a startup.

## CSS for IIS vs threatER FAQ

Common questions when comparing CSS for IIS vs threatER for workload protection.

### What is the difference between CSS for IIS and threatER?

**CSS for IIS**: Automated hardening and compliance management tool for Microsoft IIS servers. Built by CalCom Software.

**threatER**: Preemptive threat blocking platform using IP segmentation and DNS security. Built by threatER.

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

### Who makes CSS for IIS and threatER?

**CSS for IIS** is made by CalCom Software. **threatER** is made by threatER. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is CSS for IIS a good alternative to threatER?

In part. CSS for IIS and threatER are not in the same category on CybersecTools. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [CSS for IIS vs CalCom Hardening Suite (CHS)](https://cybersectools.com/compare/calcom-hardening-suite-chs-vs-css-for-iis)
- [CSS for IIS vs CimTrak CCR](https://cybersectools.com/compare/cimtrak-ccr-vs-css-for-iis)
- [CSS for IIS vs Remedio Smart Device Hardening](https://cybersectools.com/compare/css-for-iis-vs-gytpol-smart-device-hardening)
- [threatER vs CalCom Hardening Suite (CHS)](https://cybersectools.com/compare/calcom-hardening-suite-chs-vs-threater)
- [threatER vs CimTrak CCR](https://cybersectools.com/compare/cimtrak-ccr-vs-threater)
- [threatER vs Remedio Smart Device Hardening](https://cybersectools.com/compare/gytpol-smart-device-hardening-vs-threater)

## Alternatives to each

- [See all CSS for IIS alternatives](https://cybersectools.com/alternatives/css-for-iis)
- [See all threatER alternatives](https://cybersectools.com/alternatives/threater)

---

Source: https://cybersectools.com/compare/css-for-iis-vs-threater

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

More on CSS for IIS and threatER: 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