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.

Pricing

Price Starts At:
$0
Price Overview:
Free for any number of users. Optional paid support available.
Free Version:
Free Version available.

Integrations

Offers API?:
Yes, CacheGuard provides an API

Screenshots and Video

Company Facts

Company Name:
CacheGuard Technologies
Date Founded:
2025
Company Location:
France
Company Website:
www.cacheguard.com
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Product Details

Deployment
SaaS
Windows
Mac
Linux
iPhone
iPad
Android
On-Prem
Training Options
Documentation Hub
Online Training
On-Site Training
Video Library
Not Offered
Support
Standard Support
Web-Based Support
Not Offered

Product Details

Target Company Sizes
Individual
1-10
11-50
51-200
201-500
501-1000
1001-5000
5001-10000
10001+
Target Organization Types
Mid Size Business
Small Business
Enterprise
Freelance
Nonprofit
Government
Startup
Supported Languages
English
French

CacheGuard Categories and Features

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

Network Security Software

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

CacheGuard Customer Reviews

Write a Review
  • Reviewer Name: A Verified Reviewer
    Position: IT Architect
    Has used product for: 2+ Years
    Uses the product: Daily
    Org Size (# of Employees): 100 - 499
    Feature Set
    Layout
    Ease Of Use
    Cost
    Customer Service
    Would you Recommend to Others?
    1 2 3 4 5 6 7 8 9 10

    Satisfied customer

    Date: Apr 18 2023
    Summary

    The solution is very useful and can be deployed with several platforms. We are fully satisfied by the quality of the technology offered and it’s easy integration in campus, branches or data centers.

    The pricing is fair and the reactivity of the support team is really appreciated.

    Positive

    We acquired the solution for our deployment in our branches with a goal of load balancing and QoS features, I have to say that we were impressed by the quality of the solution and the professionalism of the support team.

    I highly recommend CacheGuard.

    Negative

    We have the solution in production and so far so good.

    Read More...
  • Reviewer Name: Krifa J.
    Position: Director
    Has used product for: Less than 6 months
    Uses the product: Daily
    Org Size (# of Employees): 1 - 25
    Feature Set
    Layout
    Ease Of Use
    Cost
    Customer Service
    Would you Recommend to Others?
    1 2 3 4 5 6 7 8 9 10

    Outstanding service!

    Date: Apr 12 2023
    Summary

    In all seriousness, I highly recommend CacheGuard to anyone in need of a reliable and easy-to-use. Thank you, CacheGuard team, for your outstanding service!

    Positive

    Hello!

    I just wanted to drop a quick note to let you know that I've been really impressed with CacheGuard. The service has been incredibly user-friendly and has exceeded my expectations in terms of simplicity and effectiveness.

    Negative

    I also wanted to express my sincere appreciation to the CacheGuard support team. They've been fantastic in providing prompt and helpful assistance whenever I've needed it. Thank You.

    Read More...
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