Skip to main content

Allegro

Allegro is an open source, API-driven audience engagement platform. It gives publishers the tools to understand their readers, authenticate them without passwords, and deliver personalized content — all from infrastructure they control.

What Allegro does​

At its core, Allegro connects three things: who your readers are, what they do, and what you show them.

Track audience behavior​

The Allegro SDK loads on your pages and captures events — page views, article reads, clicks, conversions — along with session and device identity. Events flow into Allegro's event queue, where your systems can consume them in real time.

Authenticate readers​

Readers sign in via magic link or social login (Google, Apple). No passwords. Allegro issues a JWT that your front-end uses to identify the reader and check their entitlements.

Deliver dynamic content​

Templates let you build interactive components in HTML, CSS, and JavaScript — subscription banners, paywalls, email capture forms — and deploy them as Interactions on your site without a code release.

Two ways to work with Allegro​

If you are...Start here
An operator setting up and managing an Allegro instanceProduct docs →
A developer embedding Allegro on an external siteSDK docs →

Key features​

For users​

  • Templates — Build reusable HTML/CSS/JS components with typed field definitions. Publish them for use in Interactions.
  • Revisions — Every template change is versioned. View history, add notes, and roll back instantly.
  • GitHub Sync — Connect a GitHub repository and keep templates in sync automatically on every push.
  • Event Queue — A Redis-backed queue lets your systems consume audience events in real time via a simple poll-and-delete API.
  • Authentication — Magic link and OAuth social login for audience members, with session management and JWT issuance.

For developers​

  • JavaScript SDK — A lightweight async script that tracks events, manages sessions, and authenticates members from any web page.
  • Web Components — Drop-in custom elements (<allegro-login-form>, <allegro-email-form>, <allegro-content-gate>) with full CSS variable theming.
  • TypeScript API — Fully typed SDK with auto-generated API reference.

Open source​

Allegro is developed by Alley Interactive and will be open sourced on GitHub. The platform is built on Laravel and designed to be self-hosted.