Koru Shield alternatives

Tools that do what Koru Shield does, found by what they say they do rather than by shelf. Among the equally alike, the most used come first. Each line says how it differs from Koru Shield.

Read 2026-10-27 · Koru Shield itself: Free plan · From $5/mo

With a free plan or free to use: Brave, Cloudflare, IsThisSpam, ScamDefender.ai, Lumo by Proton, PhishEye.

10 alternativesUnlike Koru Shield

#1
Brave Security
Browser that blocks ads and trackers, encrypts connections with built-in VPN, and includes private search.
CheaperMore widely used
1.4M
Active
From $3/mo
2015
#2
Cloudflare Security MCP · open
Proxies website traffic through a global network for CDN caching, DNS, DDoS protection and a web firewall, plus Workers serverless code and zero-trust access.
Costs moreAlso: Agents
4.9M
Active
From $20/mo
2009
#3
IsThisSpam Security MCP · open
Analyzes emails, texts, and websites to detect phishing, scams, and malicious content with instant verdicts.
Own MCP serverMore widely used
6.8k
Active
From ≈ $3.51/mo
#4
ScamDefender.ai Security
Analyzes suspicious links, emails, and messages to detect phishing, fraud, and scams using threat intelligence and pattern analysis.
Same job
64
Active
#5
Firefox Security
Blocks trackers by default in a web browser and moves bookmarks, passwords and history between devices.
More widely used
1.2M
Active
2002
#6
Darktrace Security
Detects novel threats across networks, email, cloud, and endpoints using behavioral analysis.
Also: Monitoring, AnalyticsMore widely used
68.5k
Contact sales
2013
#7
Kolide AI Security
Monitors device security posture and enforces zero-trust access policies for Okta users across Mac, Windows, and Linux.
Also: ComplianceMore widely used
3k
Active
#8
Lumo by Proton Security
Provides encrypted email, calendar, cloud storage, password manager and VPN under one Proton account, with the Lumo chat assistant as an add-on.
Also: Chat assistantMore widely used
3.4M
Active
Free plan
2014
#9
PhishEye Security
Detects phishing, typosquatting, and brand impersonation across domains, ads, and social media with coordinated takedown workflows.
Also: MonitoringMore widely used
15
Active
Free plan
#10
SentinelOne Purple AI Security
Detects and responds to endpoint threats using behavioral AI and autonomous remediation across devices and identities.
Also: Analytics, AgentsMore widely used
453k
From $179.99/user/yr
2013

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How this list is made: the words Koru Shield is described with (what it does, for whom, what it is used for) are matched against every tool in the Atlas. A tool on the same shelf, or doing the same kind of work, counts for a little more. Nothing here is paid for.