Converge – Real-Time Collaborative Whiteboard with Offline Synchronization

Converge is a modern, real-time collaborative whiteboard application designed to make teamwork easier, smarter, and more reliable. It allows multiple users to work together on a shared digital workspace, where they can draw diagrams, create flowcharts, add sticky notes, design system architectures, and organize project ideas simultaneously.

One of the biggest challenges in collaborative applications is handling multiple users editing the same content at the same time. When two or more users modify the same element, their changes can conflict, potentially resulting in overwritten or inconsistent data. Converge addresses this challenge using a custom implementation of CRDT (Conflict-Free Replicated Data Types).

CRDT is a distributed systems technique that allows multiple copies of shared data to synchronize and eventually reach an identical state, even when users make changes independently or experience network interruptions. Converge uses a per-property Last-Writer-Wins (LWW) conflict-resolution strategy, ensuring that concurrent updates are resolved consistently across participating users.

Another important capability is its offline-first architecture. Users can continue editing their whiteboards even when their internet connection is unavailable. Changes are stored locally in the browser using IndexedDB and synchronized with the server when connectivity is restored. This helps users continue their work without depending on a continuous internet connection.

Converge also provides an activity replay system that allows users to revisit the complete editing history, understand how a board evolved, and examine individual contributions. Its contribution reporting feature measures surviving work, surviving edits, and active time for each participant, making collaboration more transparent.

Additionally, the application includes an AI teammate that helps organize sticky notes into meaningful groups and labelled columns, making brainstorming sessions more structured.

Whether students are designing software architectures, planning final-year projects, or collaborating on technical diagrams, Converge provides a shared workspace where teamwork continues even when connectivity does not.