Welcome to Castor

What if your IDE understood that software engineering is more than just code? Castor is a next-generation development environment where AI agents help you build systems the way they should be built, starting with requirements and architecture, not just implementation. Castor brings together everything that matters in software development: verified requirements, living design models, and synchronized code, all in one intelligent workspace.

Here's the problem we're solving: traditional IDEs force you to juggle disconnected tools. Requirements live in documents that nobody updates. Architecture diagrams become outdated the moment you change your code and finding which requirement led to which class becomes guesswork. AI agents are powerful, but they need more than a prompt, they need the full context of what you're building, why you're building it, and how it all fits together.

Castor changes this with design-first development. Write requirements that get verified and linked directly to generated class diagrams, sequence diagrams, and architectural models. These design artifacts don't just sit there unchanged as iterations pass, they generate your codebase and stay synchronized through bidirectional updates. Change your code, and your diagrams update. Refactor your architecture, and your implementation follows. Every piece of your system traces back to its purpose, maintained automatically by AI agents that understand the complete picture.

The result? You spend less time wrestling with documentation drift and more time thinking like an engineer. Castor doesn't just help you write code faster, it helps you build better systems and become a better developer in the process, helping you understand the links between your system design and implementation.

Castor is built by a passionate team of students at Concordia University who believe developers deserve tools that match the complexity of real software engineering. We chose the name Castor after the beaver, nature's master builder. Like the software we help you create, beavers engineer their homes from the foundation upward, adapting their architecture as their world changes around them. We're building the IDE we wish we had, and we're excited to see what you'll create with it.