Microsoft Defender for Endpoint is a commercial endpoint detection and response solution by Microsoft. QuellSecure Quell is a commercial endpoint detection and response solution by QuellSecure. Features, integrations, deployment and the company behind each one, side by side.
What our shortlists say about the one we picked.
Best for: Teams already running Microsoft 365
It earns a place because it covers phones as well as desktops and servers, and many companies already own it through their Microsoft 365 license, so the first question is what you have paid for already. Its alerts flow into Microsoft's other security products, which suits a Microsoft-centric estate of any size. If you run a mixed stack, test how well its alerts reach the SIEM and SOAR you already use.
From Best Endpoint Security Solutions for Business, Fall 2026
Reviewed by Nika (Nikoloz) Kokhreidze.
Multiplatform endpoint security with detection and response capabilities
Endpoint agent that detects and contains ransomware, limiting damage to ~7 files.
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Based on what each listing shows: deployment, company size, price and open source.
Microsoft Defender for Endpoint fits if you want a cloud product and you are an enterprise.
QuellSecure Quell fits if you need to run it on your own servers and you are a startup.
Common questions when comparing Microsoft Defender for Endpoint vs QuellSecure Quell for endpoint detection and response.
Microsoft Defender for Endpoint: Multiplatform endpoint security with detection and response capabilities, built by Microsoft.
QuellSecure Quell: Endpoint agent that detects and contains ransomware, limiting damage to ~7 files, built by QuellSecure.
The table above shows where their features, integrations, deployment and company size fit differ.
Microsoft Defender for Endpoint is made by Microsoft. QuellSecure Quell is made by QuellSecure. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. Microsoft Defender for Endpoint and QuellSecure Quell are both Endpoint Detection and Response products, and both cover Ransomware Prevention. Use the table above to see where features, deployment and company size fit differ.
Need the answer fast? Best EDR Solutions for Business picks CrowdStrike Agentic Endpoint Security, Microsoft Defender for Endpoint, SentinelOne Singularity Endpoint and 4 more.See the shortlist