Building the product · Independent · 19 Oct 2026

opensumi/core

A framework helps you quickly build AI Native IDE products. MCP Client, supports Model Context Protocol (MCP) tools via MCP server.

← Building the product
OpenSumi. Framework to build AI-native code editors.

In simple English

This project is a toolkit for building your own code editor from scratch. You can run it on your desktop or inside a web browser. It comes with built-in support for artificial intelligence and connection tools. You need programming skills to set it up and change how it works. It is free to use under an open-source licence.

What it is

OpenSumi is a software framework for creating custom integrated development environments, which are applications where people write and edit computer code. It provides the core user interface, file explorer, and extension system so you do not have to build them yourself.

What it is good for

It helps developers and companies who want to ship their own branded coding application or a cloud-based development environment. It removes the need to write an entire code editor interface by hand.

Stars3.7k
LicenceMIT
Latestv3.9.0 (2025-05-20)checked 19 Oct 2026
Last code change2026-10-15
Written inTypeScript
Setup effort
4 / 5
Payoff
4 / 5
Good
  • Provides a complete code editor layout with panels and a file tree.
  • Supports Model Context Protocol (a standard way for AI models to talk to external tools and data sources) out of the box.
  • Can run as a desktop app or inside a web browser.
Watch for
  • Requires significant programming experience and TypeScript knowledge to set up and customise.
  • Needs Node.js and Yarn installed on your computer to build.
  • Large codebase with many moving parts that require ongoing maintenance.
Replaces

Writing a code editor user interface from scratch

Works well with

Node.js

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Install
git clone https://github.com/opensumi/core.git
cd core
yarn install
yarn run init
yarn run start

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