# Phishing Catcher vs ReliaQuest GreyMatter Phishing Analyzer: side-by-side comparison (2026) [Phishing Catcher](https://cybersectools.com/tools/phishing-catcher) is a free [anti-phishing](https://cybersectools.com/categories/anti-phishing) solution. [ReliaQuest GreyMatter Phishing Analyzer](https://cybersectools.com/tools/reliaquest-greymatter-phishing-analyzer) is a commercial [anti-phishing](https://cybersectools.com/categories/anti-phishing) solution by [ReliaQuest](https://cybersectools.com/companies/reliaquest). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | Phishing Catcher | ReliaQuest GreyMatter Phishing Analyzer | |---|---|---| | Pricing model | Free | Commercial | | Category | Anti-Phishing | Anti-Phishing | | Verified | No | No | | Deployment type | On-Premises | Cloud | | Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | GitHub stars | 1,757 | – | | Last commit | Dec 2020 | – | | Company | – | ReliaQuest | | Headquarters | – | – | ### Use cases and capabilities | | Phishing Catcher | ReliaQuest GreyMatter Phishing Analyzer | |---|---|---| | TLS | Yes | – | | Security Orchestration | – | Yes | ### Core features **Phishing Catcher** No features listed. **ReliaQuest GreyMatter Phishing Analyzer** 10 features listed. Sign in on the page to see them. ### Integrations **Phishing Catcher** No integrations listed. **ReliaQuest GreyMatter Phishing Analyzer** 9 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. - [Phishing Catcher](https://cybersectools.com/tools/phishing-catcher) fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product. - [ReliaQuest GreyMatter Phishing Analyzer](https://cybersectools.com/tools/reliaquest-greymatter-phishing-analyzer) fits if you want a cloud product. ## Phishing Catcher vs ReliaQuest GreyMatter Phishing Analyzer FAQ Common questions when comparing Phishing Catcher vs ReliaQuest GreyMatter Phishing Analyzer for anti-phishing. ### What is the difference between Phishing Catcher and ReliaQuest GreyMatter Phishing Analyzer? **Phishing Catcher**: Catch possible phishing domains in near real time by looking for suspicious TLS certificate issuances reported to the Certificate Transparency Log (CTL) via the CertStream API. **ReliaQuest GreyMatter Phishing Analyzer**: Automates phishing email analysis, remediation, and user response via AI. Built by ReliaQuest. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Phishing Catcher and ReliaQuest GreyMatter Phishing Analyzer? **Phishing Catcher** is open-source with 1,757 GitHub stars. **ReliaQuest GreyMatter Phishing Analyzer** is made by ReliaQuest. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Phishing Catcher a good alternative to ReliaQuest GreyMatter Phishing Analyzer? Often, yes. Phishing Catcher and ReliaQuest GreyMatter Phishing Analyzer are both Anti-Phishing products. Key differences: Phishing Catcher is Free while ReliaQuest GreyMatter Phishing Analyzer is Commercial, Phishing Catcher is open-source. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Phishing Catcher vs TitanHQ PhishTitan](https://cybersectools.com/compare/phishing-catcher-vs-titanhq-phishtitan) - [Phishing Catcher vs Egress Defend](https://cybersectools.com/compare/egress-defend-vs-phishing-catcher) - [Phishing Catcher vs Keepnet Incident Responder](https://cybersectools.com/compare/keepnet-incident-responder-vs-phishing-catcher) - [ReliaQuest GreyMatter Phishing Analyzer vs TitanHQ PhishTitan](https://cybersectools.com/compare/reliaquest-greymatter-phishing-analyzer-vs-titanhq-phishtitan) - [ReliaQuest GreyMatter Phishing Analyzer vs Egress Defend](https://cybersectools.com/compare/egress-defend-vs-reliaquest-greymatter-phishing-analyzer) - [ReliaQuest GreyMatter Phishing Analyzer vs Keepnet Incident Responder](https://cybersectools.com/compare/keepnet-incident-responder-vs-reliaquest-greymatter-phishing-analyzer) ## Alternatives to each - [See all Phishing Catcher alternatives](https://cybersectools.com/alternatives/phishing-catcher) - [See all ReliaQuest GreyMatter Phishing Analyzer alternatives](https://cybersectools.com/alternatives/reliaquest-greymatter-phishing-analyzer) --- Source: https://cybersectools.com/compare/phishing-catcher-vs-reliaquest-greymatter-phishing-analyzer For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/phishing-catcher.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Phishing Catcher and ReliaQuest GreyMatter Phishing Analyzer: 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