Average Ratings 2 Ratings

Total
ease
features
design
support

Average Ratings 0 Ratings

Total
ease
features
design
support

No User Reviews. Be the first to provide a review:

Write a Review

Description

CacheGuard-OS is an open-source Linux-based UTM gateway appliance OS that has been in active development since 2002. It is designed to run on commodity x86 hardware and act as the default route between an internal network and the internet, replacing the ISP-provided router as the traffic checkpoint. The stack integrates: Squid (web cache and proxy), ClamAV (web antivirus), ModSecurity (WAF), StrongSwan (IPsec/IKEv2 VPN), IPRoute2 (QoS and WAN load balancing), NetFilter (stateful firewall), SSL inspection, and URL filtering. All components are configured through a web-based admin interface rather than directly, making the platform accessible to operators without deep Linux expertise while remaining auditable by those who want to inspect the underlying configuration. The OS has been open-source since its first release — source ships on every installed appliance. It was recently published publicly on GitHub to make the codebase easier to browse and audit. Target deployments are small to medium networks — SMBs, schools, and branch offices — where a commercial UTM appliance is overkill on budget but the threat surface is the same. Runs on bare metal or common hypervisors (VMware, VirtualBox, KVM, Hyper-V). No vendor lock-in, no subscription, no licence cost. GitHub: cacheguard/CacheGuard-OS

Description

Hermes SEG is an open-source and free secure email gateway and server that offers robust protection against spam, viruses, and malware through tools like SpamAssassin, ClamAV, and Amavisd-new. It ensures complete encryption both in transit and at rest, utilizing protocols such as SMTP TLS, S/MIME, PGP, and encrypted PDF (CipherMail), alongside Dovecot mail-crypt. The solution also provides features for email archiving and integrated mailbox hosting, which includes options like quotas, aliases, shared folders, Sieve rules, vacation replies, and mobile auto-configuration. Users can benefit from collaboration functionalities via Nextcloud, which encompasses webmail, file synchronization, calendars, and contacts. Identity and access management is streamlined with OpenLDAP and Authelia, accommodating single sign-on (SSO) and multi-factor authentication (MFA) options such as TOTP, WebAuthn, and Duo. Additionally, it adheres to contemporary authentication standards including SPF, DKIM, DMARC, and ARC, ensuring a secure email experience for all users. By combining these features, Hermes SEG stands out as a comprehensive solution for secure email communication.

API Access

Has API Yes 

API Access

Has API No 

Screenshots View All

Screenshots View All

Integrations

Proxmox VE Yes 
VMware ESXi Yes 
VirtualBox Yes 

Integrations

Proxmox VE No 
VMware ESXi No 
VirtualBox No 

Pricing Details

$0
Free for any number of users. Optional paid support available.
Free Trial No 
Free Version Yes 

Pricing Details

$0/month/user
Free Trial No 
Free Version Yes 

Deployment

Web-Based Yes 
On-Premises Yes 
iPhone App Yes 
iPad App Yes 
Android App Yes 
Windows Yes 
Mac Yes 
Linux Yes 
Chromebook No 

Deployment

Web-Based No 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux Yes 
Chromebook No 

Customer Support

Business Hours Yes 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours Yes 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) Yes 
In Person Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

CacheGuard Technologies

Founded

2025

Country

France

Website

www.cacheguard.com

Vendor Details

Company Name

Black Fish Networks LLC

Country

United States

Website

www.hermesseg.io

Product Features

Network Security

Access Control Yes 
Analytics / Reporting No 
Compliance Reporting No 
Firewalls Yes 
Internet Usage Monitoring No 
Intrusion Detection System No 
Threat Response No 
VPN Yes 
Vulnerability Scanning No 

Web Application Firewalls (WAF)

Access Control / Permissions Yes 
Alerts / Notifications No 
Automate and Orchestrate Security No 
Automated Attack Detection No 
DDoS Protection No 
Dashboard Yes 
IP Reputation Checking Yes 
Managed Rules Yes 
OWASP Protection Yes 
Reporting / Analytics Yes 
Secure App Delivery No 
Server Cloaking Yes 
Virtual Patching Yes 
Zero-Day Attack Prevention No 

Product Features

Secure Email Gateway

Anti-Malware No 
Archiving No 
Customizable No 
Data Loss Prevention No 
End-to-End Encryption No 
Real-time Dashboards No 
Reporting / Analytics No 
Sandbox No 
Threat Protection No 

Alternatives

SONiC Reviews

SONiC

NVIDIA Networking

Alternatives

Dovecot Pro Reviews

Dovecot Pro

Open-Xchange