Optimizely Feature Experimentation

Judgement

What it is

Developer tool

What it does

Server-side and client-side A/B testing and feature flags with a statistics engine for measuring results.

Adopt it when

A product organisation runs many experiments and wants rigorous statistics alongside feature rollouts.

Watch out

Enterprise pricing, and it fits best if you use the rest of Optimizely's suite.

Ready for

Production-ready

Runs as

Cloud service and library

What the license allows

Closed source: you use it under the maker's terms and cannot change or resell the code.

Judged on 2026-11-03 from the maker's description and Wikipedia. The license and age lines are worked out directly.

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Under it

Every program, Optimizely Feature Experimentation included, runs on a microchip.

How compilers were built, back to punched paper tape