Kameleoon vs Unleash

Quote on request

From $80 per month (indicative, hosted Pro)

Quote-based, priced by traffic and modules.

Self-hosted open source is genuinely free; enterprise adds SSO, audit and change requests.

Free trial on request.

Open-source edition is free and self-hosted with no user limits.

Established

Kameleoon · since 2012

Widely used

Unleash / Bricks Software · since 2014

• Genuinely good hybrid model — the same experiment can run client- and server-side.
• Effective anti-flicker implementation.
• EU hosting with healthcare-grade compliance options.

• Local evaluation means no user data leaves your infrastructure — a strong GDPR position.
• Mature, well-documented open-source core with no artificial crippling.
• Kubernetes and Terraform support for infrastructure-as-code workflows.

• Smaller market presence outside Europe.
• Opaque pricing.
• Fewer third-party integrations than Optimizely.

• Experimentation and analytics are thin; it is a flag system first.
• Self-hosting means you own uptime for something in your request path.
• Smaller ecosystem than LaunchDarkly.

European enterprises needing both marketer and developer experimentation under GDPR.

Privacy-sensitive or cost-sensitive teams that want flags without sending user data to a vendor.