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Open Source Network Security Software (2026)
Last updated: February 2026
8 software options
Sponsored
Site24x7
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
All-in-one performance monitoring tool for DevOps and IT
Get Started with a 30-day free trial. No Credit Card required. Pricing options are available in Yearly, Monthly and Hourly models. STARTER Best suited for small teams. $9/mo PRO Best suited for medium sized teams. $35/mo ENTERPRISE Best suited for enterprises. $225/mo
Read more about Site24x7
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Secure data storage and access management software
Vault includes a free trial and an open-source version. Contact HashiCorp for details about paid subscriptions.
Read more about Vault
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Around-the-clock threat detection and response
Read more about Quadrant XDR
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-delivered VPN service to connect private networks
Three free connections, 5 minimum for paid account at $12 per user, per month with incremental discounted pricing for any number of users for up to 2000 for self-service. OpenVPN Cloud subscriptions are based on the needed number of simultaneous VPN connections. Included with your subscription is support and upgrades as well as our official VPN client, OpenVPN Connect.
Read more about CloudConnexa
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Intelligent DDoS attack detection & mitigation
Contact Haltdos for detailed pricing information.
Read more about Haltdos
Per monitored AWS account -- load all of your AWS accounts and pay for only those that CloudSploit automatically monitors Basic: $7.17/month when paid annually (or $8 paid monthly) Plus: $36/month when paid annually (or $40 paid monthly) Premium: $99/month when paid annually (or $110 paid monthly)
Read more about CloudSploit
Contact Strobes for pricing information.
Read more about Strobes PTaaS