EdgardRL

Raven Language · Alpha

Master language with literary rigor and vocal precision.

EdgardRL is a language-learning web app with lessons, quizzes, and progress tracking per profile and course. Courses download on demand. Study under Edgard — a strict, cultured mentor inspired by Poe’s raven — not a cheerful mascot.

“Under the tutelage of a sharp intellect and inflexible discipline, EdgardRL transforms the chaos of languages into an exact structure.”
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Free forever · Open source · Official site: edgardrl.com

Edgard the raven mentor greeting you

Collaborate

A community-built catalog

EdgardRL democratizes language study through co-creation. Learn from courses already in the catalog, build new ones with the Course Creator, or contribute to the open repository — every path strengthens the community.

Learn from the catalog

Browse and download community courses. Start studying in minutes — free, local-first, no paywall.

Create & share courses

Use the built-in Course Creator to author lessons, quizzes, and stories. Share JSON so others can learn from your work (CC BY-NC-ND).

Contribute on GitHub

The app is open source (Apache 2.0). Report issues, improve docs, submit code, or help shape the platform everyone uses.

Democratize together

Free forever. We are building a collaborative ecosystem — not a closed product — where knowledge travels freely inside the platform.

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What you get

Features

Classical study meets modern tools: grammar, pronunciation, and natural speaking.

Lessons & quizzes

Theory slides, matching cards, fill-in-the-blank, dictation, and sentence building.

Stories & tap-to-translate

Read micro-fragments, practice, then produce. Lookups use Apertium with FreeDict as fallback.

On-demand courses

Catalog lives on the server; you download a language to the device when you start it.

Progress by profile

XP, streaks, and unlocks are tracked per user and per course — the active course lives in session, not the URL.

Voice & pronunciation

Web Speech for listen-and-repeat. RL stands for Raven Language: diction, oratory, urban fluency.

Course creator

Author units, verbs, quizzes, and stories as JSON. Import and export between installations — no backend.

Edgard perched on the bust of Pallas

Dark academia

Edgard, the literary mentor

The name pays tribute to the raven in Edgar Allan Poe’s The Raven. Edgard is imposing, nocturnal, and observant. He watches every step and corrects with surgical precision.

Built with React, Vite, Tailwind, and SQLite WASM in OPFS — a local library on your device, not a cloud classroom.

From the README

Installation

Requires Node 24.19.0 (see .nvmrc), plus localhost or HTTPS for OPFS.

nvm use
npm install
npm run dev
npm run build          # production build (generates public/courses/index.json)
npm run preview        # serve the build locally
npm run courses:sync   # copy src/data → public/courses/
npm run dict:build     # rebuild ita–spa dictionary

The dev server sends Cross-Origin-Opener-Policy and Cross-Origin-Embedder-Policy so SharedArrayBuffer / OPFS can persist edgardrl.sqlite3. Deploy on Netlify with the same headers.

Guides

Documentation

English is the default. Spanish mirrors live in the same repository.

Database SQLite WASM, OPFS, schema, and progress queries. Course JSON v2 Canonical course format, verbs, levels, and lessons. Story circuit Preparation → fragment → activity → closing. Dictionary build Apertium + FreeDict pipeline for tap-to-translate. Creator QA Manual checks for import, export, and overwrite. Doc index English and Spanish trees side by side.