# IBM QRadar SIEM vs StreamAlert: side-by-side comparison (2026)

[IBM QRadar SIEM](https://cybersectools.com/tools/ibm-qradar-siem) is a commercial [security information and event management](https://cybersectools.com/categories/security-information-and-event-management-siem) solution by [IBM](https://cybersectools.com/companies/ibm). [StreamAlert](https://cybersectools.com/tools/streamalert) is a free [security information and event management](https://cybersectools.com/categories/security-information-and-event-management-siem) solution. Features, integrations, deployment and the company behind each one, side by side.

## Our take

What our shortlists say about the one we picked.

### [IBM QRadar SIEM](https://cybersectools.com/tools/ibm-qradar-siem)

Best for: Enterprises needing hybrid deployment with open detection rules

The trade-off is that QRadar's architecture feels heavier than cloud-native alternatives. Scaling it requires more infrastructure planning. IBM's acquisition history and product roadmap have also created uncertainty in the market, so if vendor stability is a factor in your evaluation, that's worth researching before signing a multi-year contract.

From [Best SIEM Solutions for Business](https://cybersectools.com/shortlists/best-siem-solutions), Fall 2026.

Reviewed by [Nika (Nikoloz) Kokhreidze](https://cybersectools.com/about).

Need the answer fast? [Best SIEM Solutions for Business](https://cybersectools.com/shortlists/best-siem-solutions) picks Microsoft Sentinel, Splunk Enterprise Security, CrowdStrike Falcon Next-Gen SIEM and 4 more.

## Side-by-side comparison

| | IBM QRadar SIEM | StreamAlert |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Security Information and Event Management | Security Information and Event Management |
| Verified | No | No |
| Deployment type | Hybrid | Cloud |
| Company size fit | Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| GitHub stars | – | 2,886 |
| Last commit | – | Jul 2022 |
| Company | IBM | – |
| Headquarters | – | – |

### Use cases and capabilities

| | IBM QRadar SIEM | StreamAlert |
|---|---|---|
| Log Management | Yes | Yes |
| Open Source | Yes | – |

### Core features

**IBM QRadar SIEM**

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

**StreamAlert**

No features listed.

### Integrations

**IBM QRadar SIEM**

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

**StreamAlert**

No integrations listed.

## Which one fits you

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

- [IBM QRadar SIEM](https://cybersectools.com/tools/ibm-qradar-siem) fits if you need both cloud and on-premises options.
- [StreamAlert](https://cybersectools.com/tools/streamalert) fits if you want a cloud product, you are a small business, you need a free product and you want an open-source product.

## IBM QRadar SIEM vs StreamAlert FAQ

Common questions when comparing IBM QRadar SIEM vs StreamAlert for security information and event management.

### What is the difference between IBM QRadar SIEM and StreamAlert?

**IBM QRadar SIEM**: SIEM platform for centralized security visibility and threat detection. Built by IBM.

**StreamAlert**: Serverless, real-time data analysis framework for incident detection and response.

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

### Who makes IBM QRadar SIEM and StreamAlert?

**IBM QRadar SIEM** is made by IBM. **StreamAlert** is open-source with 2,886 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is IBM QRadar SIEM a good alternative to StreamAlert?

Often, yes. IBM QRadar SIEM and StreamAlert are both Security Information and Event Management products, and both cover Log Management. Key differences: IBM QRadar SIEM is Commercial while StreamAlert is Free, StreamAlert is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [IBM QRadar SIEM vs UTMStack Real-time SIEM & XDR](https://cybersectools.com/compare/ibm-qradar-siem-vs-utmstack-real-time-siem-and-xdr)
- [IBM QRadar SIEM vs Wazuh Oops! something went wrong](https://cybersectools.com/compare/ibm-qradar-siem-vs-wazuh-oops-something-went-wrong)
- [IBM QRadar SIEM vs Exabeam New-Scale Fusion](https://cybersectools.com/compare/exabeam-new-scale-fusion-vs-ibm-qradar-siem)
- [StreamAlert vs UTMStack Real-time SIEM & XDR](https://cybersectools.com/compare/streamalert-vs-utmstack-real-time-siem-and-xdr)
- [StreamAlert vs Wazuh Oops! something went wrong](https://cybersectools.com/compare/streamalert-vs-wazuh-oops-something-went-wrong)
- [StreamAlert vs Exabeam New-Scale Fusion](https://cybersectools.com/compare/exabeam-new-scale-fusion-vs-streamalert)

## Alternatives to each

- [See all IBM QRadar SIEM alternatives](https://cybersectools.com/alternatives/ibm-qradar-siem)
- [See all StreamAlert alternatives](https://cybersectools.com/alternatives/streamalert)

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Source: https://cybersectools.com/compare/ibm-qradar-siem-vs-streamalert

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

More on IBM QRadar SIEM and StreamAlert: 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