LACCA

LACCA is a Kanban-style project management application developed as part of a Software Campus project. It provides an intuitive interface for managing tasks using a Kanban board while applying local-first principles to enable collaborative work without relying on centralized cloud services.

The project is part of the research initiative “Local-First Approaches for Cloud-Agnostic Collaborative Applications”, exploring how collaborative applications can remain responsive, resilient, and privacy-preserving by synchronizing data directly between peers and functioning fully offline.

Features

• Kanban board with columns representing task states
• Create, move, and edit task cards
• Modern web UI backed by a Scala-based backend
• Live development setup using npm and sbt
• Open to further contributions and extensions

Tech Stack

• Scala.js & Laminar for the frontend
• CRDTs for decentralized state management
• Trystero for peer-to-peer synchronization
• Vite for development and bundling

Built following local-first and cloud-agnostic design principles.

Installation

Clone the repository

git clone https://github.com/stg-tud/lacca.git
cd lacca

Install lacca with npm

  npm install

Install dependencies and run the Scala backend

  sbt
  sbt:kanban> ~fastLinkJS

Install and start the UI dev server

  npm run dev