Alternatives to Codex by OpenAI

Open platform for autonomous cloud coding agents that fix bugs, review PRs, and migrate code asynchronously.

Full IDE for orchestrating local and cloud coding agents with multi-model support.

Multi-agent IDE for orchestrating local and cloud coding agents

Deploy AI coding agents in the cloud with YAML-defined workflows

System-wide context layer for AI coding agents across multi-repo projects

Multi-agent AI coding assistant for VS Code

AI coding assistant with deep AWS integration and agentic automation

Open-source coding agent for VS Code and JetBrains, now read-only after Cursor acquisition

Spec-driven AI coding with property-based testing for verified code

Free AI-native cloud IDE with zero-setup and built-in AI assistant for rapid coding.

Terminal-native AI coding assistant with deep reasoning for complex multi-step tasks

Open-source terminal for orchestrating multi-model coding agents at scale.

Visually build native & web apps with AI agents and exportable code

Frontend stack for building agentic UX with generative UI in React

Enterprise open-weight foundation models and agents for high-consequence software engineering.

Build and deploy full-stack apps from natural language with Replit Agent.

Coding AI trained on production code for maintainable software.

Open-source multi-agent framework for structured AI software development

AI-native documentation platform with agent-driven Q&A and automations

Turn ideas into live apps and websites with AI, no coding required.

Open-source Python SDK for building multi-agent workflows with handoffs, guardrails, and realtime voice.

AI code assistant with multi-model support and token-based billing

Long-context AI assistant for deep document analysis, coding, and safe deployment.

AI agents that build, deploy, and market web apps — no code needed.

Orchestrate AI agents across the full SDLC at enterprise scale.

TypeScript framework for building production AI agents with built-in observability.

Agentic AI analytics for data teams in a collaborative notebook.

AI coding assistant with deep codebase context for enterprise teams

Generate & deploy Next.js landing pages in 5 minutes with AI.

Low-code, pro-code, and AI platform for SAP extensions and automation.