# Stack Rank AI

> The AI tools worth using, ranked by use case. A directory of AI tools for builders working with AI agents, context engineering and vibe coding. Tools are currently unscored (scores are coming soon, see https://stackrankhq.com/how-we-rank). Prices that haven't been confirmed are shown as "See site".

## Pages
- [How we rank](https://stackrankhq.com/how-we-rank): scoring method
- [New releases](https://stackrankhq.com/releases): recent AI tool releases

## AI coding agents & IDEs
- [Category page](https://stackrankhq.com/category/ai-coding-agents-ides)
- [Cursor](https://stackrankhq.com/tool/cursor): AI-first code editor with agent mode
- [Windsurf](https://stackrankhq.com/tool/windsurf): Agentic IDE (Cascade agent)
- [Claude Code](https://stackrankhq.com/tool/claude-code): Terminal-based coding agent from Anthropic
- [GitHub Copilot](https://stackrankhq.com/tool/github-copilot): AI pair programmer and coding agent in GitHub/VS Code
- [OpenAI Codex](https://stackrankhq.com/tool/openai-codex): Cloud and CLI coding agent from OpenAI
- [Cline](https://stackrankhq.com/tool/cline): Open-source coding agent for VS Code
- [Aider](https://stackrankhq.com/tool/aider): Open-source AI pair programming in the terminal
- [Zed](https://stackrankhq.com/tool/zed): Fast editor with built-in agent features

## Agent-building frameworks & harnesses
- [Category page](https://stackrankhq.com/category/agent-building-frameworks-harnesses)
- [LangGraph](https://stackrankhq.com/tool/langgraph): Graph-based framework for stateful agents
- [CrewAI](https://stackrankhq.com/tool/crewai): Multi-agent "crew" orchestration framework
- [AG2 (AutoGen)](https://stackrankhq.com/tool/ag2-autogen): Open-source multi-agent conversation framework
- [OpenAI Agents SDK](https://stackrankhq.com/tool/openai-agents-sdk): Lightweight SDK for agents, handoffs and guardrails
- [Mastra](https://stackrankhq.com/tool/mastra): TypeScript agent framework
- [Pydantic AI](https://stackrankhq.com/tool/pydantic-ai): Type-safe Python agent framework

## MCP & context-engineering tools
- [Category page](https://stackrankhq.com/category/mcp-context-engineering-tools)
- [Model Context Protocol](https://stackrankhq.com/tool/model-context-protocol): Official MCP spec, SDKs and docs
- [Smithery](https://stackrankhq.com/tool/smithery): Registry and hosting for MCP servers
- [Context7](https://stackrankhq.com/tool/context7): Up-to-date library docs served to agents via MCP
- [MCP.so](https://stackrankhq.com/tool/mcp-so): Community directory of MCP servers
- [Glama](https://stackrankhq.com/tool/glama): MCP server directory plus AI gateway
- [Composio](https://stackrankhq.com/tool/composio): Tool and integration layer for agents (incl. MCP)

## Vibe-coding app builders
- [Category page](https://stackrankhq.com/category/vibe-coding-app-builders)
- [Lovable](https://stackrankhq.com/tool/lovable): Prompt-to-full-stack web app builder
- [Bolt.new](https://stackrankhq.com/tool/bolt-new): In-browser prompt-to-app builder (StackBlitz)
- [v0](https://stackrankhq.com/tool/v0): Vercel's prompt-to-UI/app generator
- [Replit](https://stackrankhq.com/tool/replit): Cloud IDE with Replit Agent that builds and deploys apps
- [Base44](https://stackrankhq.com/tool/base44): No-code AI app builder
- [Emergent](https://stackrankhq.com/tool/emergent): Agentic full-stack app builder

## AI writing
- [Category page](https://stackrankhq.com/category/ai-writing)
- [Grammarly](https://stackrankhq.com/tool/grammarly): Writing assistant with generative AI
- [Jasper](https://stackrankhq.com/tool/jasper): AI marketing content platform
- [Copy.ai](https://stackrankhq.com/tool/copy-ai): GTM copy and workflow platform
- [Sudowrite](https://stackrankhq.com/tool/sudowrite): AI for fiction writers
- [Notion AI](https://stackrankhq.com/tool/notion-ai): AI built into Notion docs and wikis

## AI research & search
- [Category page](https://stackrankhq.com/category/ai-research-search)
- [Perplexity](https://stackrankhq.com/tool/perplexity): Answer engine with cited sources
- [NotebookLM](https://stackrankhq.com/tool/notebooklm): Research notebook grounded in your sources
- [Elicit](https://stackrankhq.com/tool/elicit): AI for academic paper research
- [Consensus](https://stackrankhq.com/tool/consensus): Evidence-based answers from papers
- [You.com](https://stackrankhq.com/tool/you-com): AI search and research agents
- [Exa](https://stackrankhq.com/tool/exa): Search API built for AI agents

## Image, video & voice generation
- [Category page](https://stackrankhq.com/category/image-video-voice-generation)
- [Midjourney](https://stackrankhq.com/tool/midjourney): High-quality image (and video) generation
- [Ideogram](https://stackrankhq.com/tool/ideogram): Image generation with strong text rendering
- [Runway](https://stackrankhq.com/tool/runway): AI video generation and editing
- [Luma AI](https://stackrankhq.com/tool/luma-ai): Dream Machine video generation
- [Pika](https://stackrankhq.com/tool/pika): Playful AI video generation
- [ElevenLabs](https://stackrankhq.com/tool/elevenlabs): AI voice, TTS and voice agents
- [HeyGen](https://stackrankhq.com/tool/heygen): AI avatar videos and translation

## Automation & agent workflows
- [Category page](https://stackrankhq.com/category/automation-agent-workflows)
- [n8n](https://stackrankhq.com/tool/n8n): Open-source workflow automation with AI agents
- [Zapier](https://stackrankhq.com/tool/zapier): App automation with AI agents
- [Make](https://stackrankhq.com/tool/make): Visual automation scenarios
- [Gumloop](https://stackrankhq.com/tool/gumloop): No-code AI workflow builder
- [Lindy](https://stackrankhq.com/tool/lindy): No-code AI agents/assistants
- [Relay.app](https://stackrankhq.com/tool/relay-app): Automations with AI steps and human-in-the-loop