Abby

Abby provides a fully typed API for feature flagging and remote configuration that can be integrated into React and Next.js applications. It supports multi‑environment testing and includes debugging tools, allowing developers to manage feature rollouts and conduct A/B tests without leaving the codebase. The platform also offers a web dashboard aimed at non‑technical team members, enabling them to view and adjust flags without writing code.

The project is built as a monorepo with TypeScript‑only packages, including core JavaScript SDK and framework‑specific adapters for React, Next.js, Angular, and Svelte. All components are bundled with standard development utilities such as ESLint, Prettier, and pnpm, and the repository includes example applications and documentation generated with Next.js and Nextra.

Abby can be self‑hosted or accessed through a hosted service, and it is designed with privacy in mind, avoiding collection of personal user data and marketing cookies. The stable release is ready for production use and includes tools like MailHog for email verification during setup.