# Codenotary Guardian vs Messageware Server Threat Guard (STG): side-by-side comparison (2026) [Codenotary Guardian](https://cybersectools.com/tools/codenotary-guardian) is a commercial [workload protection](https://cybersectools.com/categories/workload-protection) solution by [Codenotary](https://cybersectools.com/companies/codenotary). [Messageware Server Threat Guard (STG)](https://cybersectools.com/tools/messageware-server-threat-guard-stg) is a commercial [workload protection](https://cybersectools.com/categories/workload-protection) solution by [Messageware](https://cybersectools.com/companies/messageware). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | Codenotary Guardian | Messageware Server Threat Guard (STG) | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Workload Protection | Workload Protection | | Verified | No | No | | Deployment type | Cloud | On-Premises | | Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | Codenotary | Messageware | | Headquarters | – | – | ### Use cases and capabilities | | Codenotary Guardian | Messageware Server Threat Guard (STG) | |---|---|---| | Zero Day | Yes | Yes | | CIS | Yes | – | | Linux | Yes | – | | Windows Security | – | Yes | | Server | – | Yes | | Microsoft 365 | – | Yes | ### Core features **Codenotary Guardian** 10 features listed. Sign in on the page to see them. **Messageware Server Threat Guard (STG)** 10 features listed. Sign in on the page to see them. ### Integrations **Codenotary Guardian** No integrations listed. **Messageware Server Threat Guard (STG)** 1 integration 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. - [Codenotary Guardian](https://cybersectools.com/tools/codenotary-guardian) fits if you want a cloud product and you are a startup. - [Messageware Server Threat Guard (STG)](https://cybersectools.com/tools/messageware-server-threat-guard-stg) fits if you need to run it on your own servers. ## Codenotary Guardian vs Messageware Server Threat Guard (STG) FAQ Common questions when comparing Codenotary Guardian vs Messageware Server Threat Guard (STG) for workload protection. ### What is the difference between Codenotary Guardian and Messageware Server Threat Guard (STG)? **Codenotary Guardian**: AI-powered Linux system protection with auto-remediation and compliance. Built by Codenotary. **Messageware Server Threat Guard (STG)**: Real-time threat detection & health monitoring for Windows/Exchange servers. Built by Messageware. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Codenotary Guardian and Messageware Server Threat Guard (STG)? **Codenotary Guardian** is made by Codenotary. **Messageware Server Threat Guard (STG)** is made by Messageware. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Codenotary Guardian a good alternative to Messageware Server Threat Guard (STG)? Often, yes. Codenotary Guardian and Messageware Server Threat Guard (STG) are both Workload Protection products, and both cover Zero Day. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Codenotary Guardian vs ESET Server Security](https://cybersectools.com/compare/codenotary-guardian-vs-eset-server-security) - [Codenotary Guardian vs Monarx](https://cybersectools.com/compare/codenotary-guardian-vs-monarx) - [Codenotary Guardian vs Monarx Platform](https://cybersectools.com/compare/codenotary-guardian-vs-monarx-platform) - [Messageware Server Threat Guard (STG) vs ESET Server Security](https://cybersectools.com/compare/eset-server-security-vs-messageware-server-threat-guard-stg) - [Messageware Server Threat Guard (STG) vs Monarx](https://cybersectools.com/compare/messageware-server-threat-guard-stg-vs-monarx) - [Messageware Server Threat Guard (STG) vs Monarx Platform](https://cybersectools.com/compare/messageware-server-threat-guard-stg-vs-monarx-platform) ## Alternatives to each - [See all Codenotary Guardian alternatives](https://cybersectools.com/alternatives/codenotary-guardian) - [See all Messageware Server Threat Guard (STG) alternatives](https://cybersectools.com/alternatives/messageware-server-threat-guard-stg) --- Source: https://cybersectools.com/compare/codenotary-guardian-vs-messageware-server-threat-guard-stg For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/codenotary-guardian.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Codenotary Guardian and Messageware Server Threat Guard (STG): 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