Open-source product adoption toolkit. Smart feature announcements, tours, checklists, feedback — with a client-side behavioral engine. 3 kB core. React, Vue, Svelte, Next.js, Remix, Astro + more.
react open-source typescript changelog nextjs feature-flags saas onboarding sidebar developer-tools feature-discovery whatsnew whats-new product-adoption product-tours shadcn-ui new-badge pendo-alternative behavioral-engine
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Updated
Mar 1, 2026 - TypeScript