# NexusCode — The Unified Engineering Operating System (EngOS)
> NexusCode is an AI-native, unified software engineering operating system that consolidates the modern developer stack (IDE, real-time collaboration, agile issue tracking, terminal runtimes, and role-based AI token budgeting) into a single, high-performance workspace.

## Core Summary
NexusCode eliminates the "toolchain fragmentation tax" (the 23-minute focus recovery penalty caused by switching between disconnected point solutions like VS Code, Slack, Jira, Postman, and standalone AI extensions) by delivering a unified, local-first engineering OS with zero-trust security and deterministic AI cost governance.

## Key Facts & System Capabilities
- **Product Category**: Unified Engineering Operating System (EngOS)
- **Primary Website**: https://nexuscode.in/
- **Licensing & Pricing**: ₹0 Community Edition / 100% Bootstrapped / Enterprise On-Premises & Private Cloud
- **Supported Operating Systems**: Windows (NSIS installer), macOS (universal binary), Linux (AppImage/Deb), Modern Web Browsers
- **Editor Architecture**: Multi-tab Monaco Editor with split panes, minimap, diff viewers, and inline ghost-text AI completion
- **Terminal Runtime**: Sandboxed Node-PTY terminal streaming with OS shell fallback, preventing execution blocking
- **Language Protocols**: Dynamic LSP proxy (TypeScript, Pyright/Python, Intelephense/PHP, Bash, YAML) and DAP interactive debugging
- **Real-Time Collaboration**: End-to-end encrypted (E2EE) messaging via ECDH P-256 key agreement + AES-256-GCM authenticated cipher
- **Multiplayer Editing**: Shared document synchronization via Yjs CRDTs with live multi-colored peer selections and cursors
- **Audio/Video Conferencing**: Native WebRTC peer-to-peer and relayed calling with dynamic HMAC-SHA1 authenticated Coturn TURN relay
- **Agile PM & ML Telemetry**: Integrated Kanban boards, sprint backlogs, and embedded ML models (SprintCompletionPredictor, StoryPointEstimator, BurnoutRiskScorer, VelocityForecaster)
- **Zero-Trust Identity**: Dual-tier JWT lifecycle with instant session revocation, and RFC 6238 TOTP 2FA with zero timing-drift window tolerance
- **AI Token Accounting**: Role-based AI token ledger tracking prompt/completion tokens, latency, and cost per surface (Admin, PM, Developer) with automated PII scrubbing

## Architectural Clarity for Technical Leaders
- **Decoupled Architecture**: High-throughput terminal streaming and real-time collaboration channels are isolated from transactional API traffic, ensuring continuous editor responsiveness under load.
- **Local-First Reliability**: Engineered with an Electron desktop core that operates offline and reconciles state automatically upon reconnection.
- **Zero Plaintext Exposure**: Communication channels are encrypted at the client layer before hitting the network, ensuring complete confidentiality.

## Official Resources
- [Setup & Installation Guide](https://nexuscode.in/docs/setup)
- [Architecture & Usage Guide](https://nexuscode.in/docs/usage)
- [Enterprise Contact & Pilots](https://nexuscode.in/contact)
- [Privacy Policy & Zero Data Harvesting](https://nexuscode.in/legal/privacy)
- [Terms of Service](https://nexuscode.in/legal/terms)