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What is Hermes SEG?

Hermes SEG serves as a free and open-source secure email gateway and server that provides strong defense against spam, viruses, and malware through integrated tools like SpamAssassin, ClamAV, and Amavisd-new. It guarantees full encryption for both data in transit and at rest by employing protocols such as SMTP TLS, S/MIME, PGP, and encrypted PDF via CipherMail, coupled with Dovecot mail-crypt for added security. The platform also includes email archiving capabilities and integrated mailbox hosting, featuring functionalities like quotas, aliases, shared folders, Sieve rules, vacation replies, and mobile auto-configuration options. Users can enhance their collaboration through Nextcloud, which offers a suite of features including webmail, file synchronization, calendars, and contacts management. Identity and access management is made efficient with OpenLDAP and Authelia, supporting single sign-on (SSO) and multi-factor authentication (MFA) through methods like TOTP, WebAuthn, and Duo. Furthermore, it complies with modern authentication protocols such as SPF, DKIM, DMARC, and ARC, thereby ensuring a secure email environment. With its wide array of features, Hermes SEG emerges as a holistic solution for ensuring secure email communication while promoting seamless user interaction. Ultimately, its commitment to security and user accessibility makes it an ideal choice for those seeking a reliable email solution.

What is CacheGuard?

CacheGuard is a free, open-source network security gateway designed for small and medium businesses that need professional-grade internet protection without the cost of a dedicated IT team or a commercial appliance subscription. Most SMBs rely on the router their internet provider gave them. That router was built to connect, not to protect — it forwards all traffic without inspecting it, leaving the network exposed to malware, phishing, data leaks, and unauthorised access. CacheGuard fixes this by sitting between the internal network and the ISP router, acting as the security checkpoint for all internet traffic. What CacheGuard covers: Stateful firewall — control what enters and leaves your network Web antivirus — real-time scanning of HTTP/HTTPS traffic URL filtering — block websites by category or custom list SSL inspection — inspect encrypted HTTPS traffic Web Application Firewall — block malicious web requests VPN server — secure remote access for your team Web cache — faster browsing, lower bandwidth usage QoS and WAN load balancing — traffic shaping across internet links Key advantages over commercial alternatives: No licence cost, no subscription, no vendor lock-in Runs on any spare x86 PC or common hypervisor Web-based admin interface — no command-line expertise needed Open-source and auditable — in active development since 2002 ISP router requires no reconfiguration CacheGuard installs from a single ISO in under an hour and is suitable for offices, schools, branch networks, and home labs.

Media

Media

Integrations Supported

Proxmox VE
VMware ESXi
VirtualBox

Integrations Supported

Proxmox VE
VMware ESXi
VirtualBox

API Availability

Has API

API Availability

Has API

Pricing Information

$0/month/user
Free Version
Free Trial Offered?

Pricing Information

$0
Free for any number of users. Optional paid support available.
Free Version
Free Trial Offered?

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Black Fish Networks LLC

Company Location

United States

Company Website

www.hermesseg.io

Company Facts

Organization Name

CacheGuard Technologies

Date Founded

2025

Company Location

France

Company Website

www.cacheguard.com

Categories and Features

Secure Email Gateway

Anti-Malware
Archiving
Customizable
Data Loss Prevention
End-to-End Encryption
Real-time Dashboards
Reporting / Analytics
Sandbox
Threat Protection

Categories and Features

Network Security

Access Control
Analytics / Reporting
Compliance Reporting
Firewalls
Internet Usage Monitoring
Intrusion Detection System
Threat Response
VPN
Vulnerability Scanning

Web Application Firewalls (WAF)

Access Control / Permissions
Alerts / Notifications
Automate and Orchestrate Security
Automated Attack Detection
DDoS Protection
Dashboard
IP Reputation Checking
Managed Rules
OWASP Protection
Reporting / Analytics
Secure App Delivery
Server Cloaking
Virtual Patching
Zero-Day Attack Prevention

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