Harness Feature Flags vs PostHog

Harness Feature Flags has no write-up on Specifiction yet; its figures are above.

PostHog is a platform for building products, communicating with customers, and understanding customer data. Its suite includes product and web analytics, funnels, heatmaps, graphs and trends, lifecycle analysis, and user paths. Session Replay records sessions from web, React Native, iOS, Android, Flutter, and other SDKs. Feature Flags can target users, groups, or traffic percentages and support phased rollouts, kill switches, multivariate variants, JSON payloads, and beta opt-ins. An integrated data warehouse can use external sources such as Snowflake or BigQuery. PostHog CDP transforms events in real time and sends them to more than 50 destinations, including webhooks, Slack, Braze, and Customer.io. PostHog Desktop is a coding agent that can use product signals such as errors, support tickets, session replays, GitHub issues, Linear, and Zendesk to investigate causes and create pull requests. The free plan includes one year of event and metadata retention; free recordings are kept for one month. Paid plans guarantee seven years of event and metadata retention. PostHog also describes an open-source product licensed under MIT.