If you want to decouple code deployment from feature release, Split is a great choice. It offers feature flag management, continuous delivery and experimentation in one service. You can deploy new features while monitoring their effects and adjusting configuration settings on the fly, which makes it easier to spot problems and adjust accordingly. The service is designed to let teams release updates rapidly while minimizing risk.
Another powerful option is Statsig, a full-stack feature management and experimentation service. Statsig offers tools like Experiments for automated analysis, Feature Flags for controlling rollouts and Analytics for data-driven decisions. It also offers Session Replays to see what users are doing, which can speed up the process of launching and optimizing features. The service offers a variety of pricing options, including a free Developer plan.
If you want a more general-purpose software delivery service, check out Harness. It automates and optimizes the delivery process from continuous integration to feature flags to infrastructure. Harness can get software to market faster, with built-in guardrails to control the introduction of new features. It integrates with tools like GitHub and Bitbucket, so it can fit in with your workflow.
Last, PostHog offers a collection of product analytics, feature flags and session replays tools to help you build products that work. It's got features like multivariate flags, A/B testing and dynamic cohort support, along with built-in surveys. PostHog offers flexible pricing and an open-source community, which can be appealing to startups and growth-stage companies.