Cohort

Self-hosted feature flags without the enterprise pricing or the sales call. Toggle features per user or by percentage rollout from a clean dashboard, with SDKs for a few languages and everything running in one Docker container so your data stays yours. The part I sweated was making percentage rollouts sticky: I hash the user id into the bucket so a given user does not flip-flop between variants on every request, which sounds obvious but is easy to get wrong and miserable to debug. It evaluates flags inline with no network hop using a local cache that refreshes in the background. Audit logs and scheduled rollouts are on the list.