No. 12 of 31 ·Network Testing Software

Invariant

Web · API

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Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Invariant is ranked #12 of 31 in network testing software on Freedom251. It runs on API, Web. There is a free plan.

Invariant plans and pricing

All plans

Basic Free Basic accounts are free; the page gives no numeric price. effectively no usage limits docs.invariant.tech · 4 Oct 2026

Compared on network testing software

Free plan: Yes
Deployment: hybrid
Protocol support: BGP, OSPF, IPSec, NAT, policy-based routing, VPN, ACL, VLAN
Scheduled tests: Yes
API access: Yes

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The record

Purpose: Invariant validates network configurations against user-provided rules in a cross-vendor digital twin to identify connectivity problems and unwanted security gaps.
Analysis: Invariant builds its network model from configuration files and does not require direct access to routers or switches.
Policy rules: Users can define connectivity and security policies in YAML and evaluate them against network snapshots.
Pre-change checks: Invariant can evaluate proposed configuration changes before deployment and report policy violations and critical-flow failures.
Monitoring: Invariant can receive scheduled network scans and generate incident alerts with virtual traceroutes and virtual route-table differences.
Integrations: The maker lists Jenkins, GitHub Actions, LibreNMS, Netmiko, Aerleon, Capirca, IPAM, and SIEM workflows as integration options.
Automation tools: Invariant provides a CLI, SDK, and API for automating network management and validation tasks.
Network vendors: The maker lists Cisco, Juniper, Palo Alto, and AWS among supported vendors.
Security: Invariant says its client removes passwords and secrets from configuration files before upload, and its cloud service uses encryption and environment isolation.
Data access: The maker says staff cannot view customer data except through special disaster-recovery accounts secured with physical tokens.
Hosting option: The maker says customers requiring fully on-premise data retention should contact Invariant.
Higher tiers: Higher-tier accounts unlock SSO, support for the highest device counts described as up to hundreds or thousands of devices, and early access to preview features.
Support: The contact page lists [email protected] for technical support and says Slack is the most immediate way to reach the company.
Intended users: Invariant describes its users as network and security operators who need to assess network security and safely make network changes.
Price from: Free

Where it ranks on Freedom251

Best Network Testing Software in 2026#12 of 31

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Sources

docs.invariant.tech/Introduction/· checked 4 Oct 2026
docs.invariant.tech/Connectivity-Validation/Overview/· checked 4 Oct 2026
invariant.tech· checked 4 Oct 2026
invariant.tech/about· checked 4 Oct 2026
invariant.tech/contact· checked 4 Oct 2026