Best open-source alternatives to Cursor IDE

OpenCode is an open source AI coding agent designed for developers who want to work from the terminal. It provides a TUI-focused workflow for coding, planning, and code exploration, and the README emphasizes that it is provider-agnostic rather than tied to a single model vendor. The project is aimed at people who want an agentic coding assistant with flexibility in deployment and model choice. It includes built-in agents for full-access development work and read-only analysis, plus a general subagent for complex searches. The README also notes a desktop app beta and a client/server architecture, which suggests the tool can be used locally while being controlled remotely from other clients.

Claude Code is an agentic coding assistant designed for developers who want help directly in their terminal and related workflows. It is positioned as a tool that can understand a project’s codebase, assist with routine programming tasks, explain complex code, and help manage git operations through natural language commands. The project appears aimed at individual developers and teams working in local repositories, with usage extending to the terminal, IDEs, and even GitHub via @claude mentions. The README also highlights a plugin system for extending behavior with custom commands and agents, along with documentation and troubleshooting resources for setup and usage. It is backed by Anthropic and includes information about data collection and privacy safeguards.

Zed is a high-performance code editor built by the creators of Atom and Tree-sitter. It is aimed at developers who want a fast editor with collaborative, multiplayer capabilities and native support for major desktop operating systems. The README describes installation options for macOS, Linux, and Windows, either by downloading the application directly or installing it through a local package manager. It also points contributors to platform-specific development guides for building Zed from source, indicating that the project supports active local development across the main desktop platforms.

Codex CLI is a locally running coding agent from OpenAI aimed at developers who want AI assistance directly on their computer. The README positions it as the command-line counterpart to OpenAI’s broader Codex experience, with optional paths into an IDE integration, a desktop app, and a separate cloud-based Codex Web product. It is distributed through common installation channels including npm, Homebrew, and downloadable GitHub release binaries. Users can authenticate either with a ChatGPT account or, with additional setup, an API key. The project’s documentation and install guides are linked from the repository, and the codebase is released under Apache-2.0, indicating an open-source, self-hosted tool intended for local use.

Cline is a VS Code extension that acts as an AI coding assistant. It is designed for developers who want help with software tasks that go beyond autocomplete, including understanding project structure, editing code, running commands, and validating changes in a browser. The extension works in a human-in-the-loop style: it proposes and carries out steps while asking for approval before file changes and terminal commands. It can connect to many AI providers or local models, track usage costs, and be extended with MCP tools for workflow-specific automation. It is aimed at users who want an interactive agent for day-to-day development work rather than a fully autonomous script.

Aider is a terminal-based AI pair programming assistant for software developers working in existing repositories or starting new projects. It is designed to help users edit code with the assistance of large language models, with support for both cloud-hosted models and local models. The project is aimed at developers who want an interactive coding workflow that fits into their command line, git workflow, and editor/IDE setup. It can map a codebase, generate commits, incorporate images or web pages as context, and even accept voice input. The README also emphasizes automatic linting and testing, suggesting that Aider is meant to help with practical day-to-day development tasks rather than just code generation.

Goose is an on-machine AI agent aimed at developers who want to automate engineering work rather than just generate code suggestions. It is designed to handle end-to-end tasks such as creating projects, writing and running code, debugging failures, orchestrating workflows, and interacting with external APIs. The project emphasizes flexibility and local use. It supports any LLM, offers multi-model configuration to balance performance and cost, integrates with MCP servers, and is available as both a desktop app and a CLI. The README positions it as a developer assistant that can be adapted to different workflows and used for rapid prototyping, maintenance, and automation.

Continue is a developer-focused tool for automating AI-assisted code checks in pull requests. It is designed for teams that want review logic to live alongside the codebase and be enforced through GitHub status checks rather than handled manually in a separate interface. The project works by running agents on every pull request, where each agent is defined as a markdown file in the repository under a `.continue/checks/` directory. These checks can evaluate changes, flag issues, and propose suggested diffs when something fails. The README also highlights a command-line interface, Continue CLI (`cn`), which can be installed on macOS, Linux, Windows, or via npm, and then used to work with these AI checks.

Void is an open-source code editor project positioned as an alternative to Cursor. It is built for developers who want to use AI agents directly on their codebase while keeping control over the model or host they connect to. The README emphasizes that Void sends messages directly to providers without retaining user data, and that it can work with locally hosted models as well. The repository contains the full source code, and the project is presented as a fork of VS Code with references for codebase navigation and building a custom version of the editor.

Roo Code is a VS Code extension that acts as an AI-powered development assistant. It is aimed at developers who want help with coding workflows directly inside their editor, including generating code from natural language, refactoring existing projects, debugging issues, and automating repetitive tasks. The project is built around several work modes such as Code, Architect, Ask, Debug, and custom modes, allowing it to adapt to different development tasks. It also supports MCP servers and exposes reusable workflows via slash commands, and the README points users to installation, configuration, and tutorial documentation for learning and setup.