Best nao Alternatives

Spec-driven agentic AI IDE from AWS, built on Code OSS (the VS Code foundation), that transforms ad-hoc prompting into a structured workflow by auto-generating requirements documents, design specs, and implementation plans before writing code. Kiro keeps AI-written code tied to explicit acceptance criteria defined up front.

VS Code fork with Builder Mode for full-stack project generation from natural language prompts. Offers free access to Claude 3.7 Sonnet, GPT-4o, and DeepSeek models. With 6M+ users and a cloud IDE option, Trae is one of the most accessible AI coding tools for developers who want powerful AI features without upfront costs or complex setup.

Google Antigravity is Google's AI-powered agentic development platform, announced in November 2025 and expanded with Antigravity 2.0 at I/O 2026, that places autonomous AI agents at the center of software development. Distributed as both a VS Code-based desktop app and the new Antigravity CLI, it runs planning, implementation, and verification agents — backed by Gemini 3.1 Pro/Flash, Claude Sonnet/Opus 4.6, and GPT-OSS 120B — across editor, terminal, and browser.