Eclipse Theia
Overview
Eclipse Theia is an open platform for building custom Cloud & Desktop IDEs and developer tools. The Theia IDE is a product built on the platform that can be used directly, while Theia AI brings native support for chat, agents and model integrations. The architecture is plugin-first and highly customizable, making it a strong fit for enterprise toolchains and privacy-conscious deployments.
Use Cases
Enterprise-customized IDE
Build and distribute a custom IDE within the enterprise.
Cloud/desktop dual form
Support development in both browser and desktop applications.
Plugin-based extensions
Integrate LSP, debugging, AI, and more via extensions.
AI-native tools and IDEs
Create domain-specific AI agents, chat workflows, and coding assistance using Theia AI.
Open alternative to VS Code
Vendor-neutral IDE with compatibility for VS Code extensions via Open VSX.
Pricing
Individual Plans
Includes:
- Open source
- Community support
Core Features
Standard Features
Advanced Features
Plugin architecture
Add capabilities and integrate services via extensions.
Multi-form deployment
Support both desktop and browser applications.
Enterprise-friendly
Fits private deployments and compliance governance.
AI chat with slash commands
Invoke reusable prompt templates via /commands with autocomplete.
Agent modes
Selectable behaviors for chat agents to tailor responses and workflows.
Chat session persistence
Conversations and change sets are stored and remain actionable after restart.
Terminal command suggestions
Agents can insert suggested commands into the terminal buffer for review.
OpenAI Response API support
Use the modern OpenAI response endpoint for improved reliability.
AI Models Support
API Integration
OpenAI
Anthropic
Custom API
System Requirements
Supported Platforms
Web, Windows, macOS, Linux
API Support
Plugin extensions and custom modules; Theia AI agent APIs
Compatibility
Compatible with LSP/debugging/terminal; supports VS Code extensions via Open VSX
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