Kameleoon vs Split

Quote on request

Free tier available

Quote-based, priced by traffic and modules.

Paid tiers are quote-based, priced by monthly tracked keys.

Free trial on request.

Free tier with limited monthly tracked keys.

Established

Kameleoon · since 2012

Established

Harness · since 2015

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

• Automatic metric impact on every flag catches regressions nobody thought to measure.
• Guardrail alerts stop a bad rollout before it reaches everyone.
• Strong data-platform integrations.

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

• Post-acquisition roadmap now sits inside Harness's broader platform strategy.
• Requires meaningful event instrumentation before the impact analysis is useful.
• Opaque enterprise pricing.

European enterprises needing both marketer and developer experimentation under GDPR.

Teams that want every release measured, not just deliberate experiments.