Open source. Open possibilities.

Payload is an open-source, Next.js-native headless CMS and fullstack app framework. It installs into your existing /app folder and provides a TypeScript backend, admin panel, auth, versions and access control out of the box.

UPORTAL is an open-source self-hosted platform for email tracking, link tracking, and controlled publication management, featuring a Thunderbird add-on, hosted Markdown pages, file download tracking, and unified analytics.

Grav is a fast, flexible flat-file CMS built on PHP, Markdown, Twig and Symfony components. It needs no database or installation—just extract the archive—and includes a package manager for installing and updating plugins and themes.

Strapi is a leading open-source headless CMS built in JavaScript/TypeScript, offering visual content modeling, auto-generated REST/GraphQL APIs, roles, media library, i18n, and plugin ecosystem.

AppFlowy is an open‑source, AI‑enhanced workspace that serves as a Notion alternative. It offers cross‑platform native apps (desktop, iOS, Android), self‑hosting, and full data control, built with Flutter and Rust.

NSFWJS is a JavaScript library that enables client-side NSFW image detection using TensorFlow.js. It classifies images into five categories with high accuracy, supporting browser and Node.js environments.