I'll second GrowthBook. I was able to drop out of a LaunchDarkly subscription that was costing thousands of dollars per month and into a nice, cozy $29 Growthbo

I'll second GrowthBook. I was able to drop out of a LaunchDarkly subscription that was costing thousands of dollars per month and into a nice, cozy $29 Growthbook plan with zero loss in fidelity, while also increasing capabilities. Growthbook has a Chrome dev plugin that allows you to simulate feature flags and value changes without having to modify the actual flags and watch the page update in response to the flag changes, which made it not only cheaper than LaunchDarkly, but markedly better to work with.