Best AI IDEs for Mercury Edit 2

Cursor is an AI-native integrated development environment (IDE) engineered to transform how software is written, reviewed, and deployed. Trusted by millions of professional developers, it merges human creativity with machine intelligence through features like Agent, a fully autonomous collaborator that turns ideas into executable code, and Tab, an adaptive autocompletion system that predicts your next move with precision. Cursor’s deep codebase indexing allows it to instantly understand large and complex repositories, enabling smart search, refactoring, and context-aware suggestions across files. With multi-model flexibility, developers can choose from leading AI models—OpenAI’s GPT-5, Anthropic’s Claude 4.5, Google’s Gemini 2.5, or xAI’s Grok Code—to match specific performance and reasoning needs. Cursor integrates effortlessly into existing workflows, acting as a teammate in GitHub, Slack, and other key tools. Its interface balances autonomy and control, letting users decide whether to perform quick edits, plan-mode changes, or let the agent operate end-to-end. Designed for individual creators and large enterprises alike, Cursor improves velocity, reduces cognitive load, and enhances collaboration across distributed teams. It’s more than an editor—it’s the next frontier in developer productivity.

Roo Code is an AI software engineering team that operates interactively in your IDE and autonomously in the cloud. It allows developers to write, refactor, debug, and test code with task-specific AI agents. Roo Code is model-agnostic, supporting dozens of AI providers and letting users bring their own API keys. Role-based modes ensure agents stay focused and predictable while working on complex tasks. The platform is highly configurable, fitting naturally into existing workflows and editors. With open-source foundations and enterprise-grade security, Roo Code keeps your code private and under your control. It helps teams move faster by parallelizing work across cloud-based agents. Roo Code scales from solo developers to large engineering organizations.