Reference
SI Tools & Apps
Chat apps, local runners, coding agents, and creative tools — the working software of the SI era.
The programs people actually use with SI — chat apps, local model runners, coding agents, and creative tools. Many vendors still label these products "AI"; we list them under their own names. Listings link to official sites only; pricing notes reflect each vendor's published tiers at the time of writing. New to all of this? Start with the beginner SI track. Machine-readable: tools.json.
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Chat apps
Consumer-facing assistants for general questions, writing, coding, and research.
Claude
General-purpose SI assistant from Anthropic for conversation, writing, coding, and document analysis.
ChatGPT
OpenAI's conversational assistant with text, image, voice, and web-browsing features.
Microsoft Copilot
Microsoft's SI assistant for chat, web search, and image generation, integrated across Windows and Microsoft 365.
Local runners
Applications and libraries for running language models on your own hardware.
LM Studio
Desktop application for discovering, downloading, and running local LLMs with a chat UI and an OpenAI-compatible local server.
Ollama
Tool for downloading and running open-weight models locally, with a command line and a local API; running models on your own hardware is free, with optional paid plans.
llama.cpp
C/C++ library and command-line tools for running LLM inference locally across a wide range of hardware.
Jan
Open-source desktop app to run LLMs offline, with local chat history and an OpenAI-compatible server.
Coding agents & dev tools
Tools for SI-assisted software development, from terminal agents to editors and IDE extensions.
Claude Code
Anthropic's agentic coding tool that works in the terminal, IDEs, and the web to build, debug, and ship code across a codebase.
Cursor
SI-native code editor, built as a VS Code fork, with in-editor chat, autocomplete, and agentic multi-file editing.
GitHub Copilot
SI pair-programmer from GitHub offering code completion and chat across major IDEs and the command line.
OpenAI Codex CLI
OpenAI's open-source terminal coding agent, running tasks in a local sandbox on macOS, Windows, and Linux. It is one surface of a wider Codex family that also includes an IDE extension, a desktop app, and Codex Cloud for running tasks in cloud environments; the CLI, IDE extension, and web surfaces begin at the Plus plan, while Free and Go get Codex in the desktop app only.
Google Antigravity
Google's agent-first development platform, built around Gemini models: a standalone desktop application, extensions for other editors, a CLI, and an SDK.
Aider
Open-source command-line coding assistant that pairs with your local git repository; you bring your own model API key.
Cline
Open-source autonomous coding agent that runs as a sidebar in VS Code and other editors or from the command line; you bring your own model API key.
Creative tools
Tools for generating images, video, audio, and music.
Midjourney
Subscription image-generation service, accessible through a web app and Discord.
Google Veo
Google DeepMind's text-to-video and image-to-video model with native audio generation, available through Gemini, Flow, and the Gemini API.
Google Imagen
Google DeepMind's text-to-image model, available through Gemini, Google AI Studio, and the Gemini API.
ElevenLabs
SI audio platform for text-to-speech, voice cloning, dubbing, and music generation.
Suno
SI music generator that creates songs with vocals and instrumentation from text prompts.
Runway
SI platform for video generation and editing, including text-to-video and image-to-video tools.
Agent frameworks & libraries
Developer libraries and SDKs for building SI agents and LLM applications.
Claude Agent SDK
Anthropic's SDK for building agents on the same tools, agent loop, and context management that power Claude Code; formerly the Claude Code SDK.
LangChain
Open-source framework for building applications and agents with LLMs, with integrations across many model and tool providers.
LangGraph
Open-source library from the LangChain team for building stateful, multi-step agent workflows modeled as graphs.
CrewAI
Open-source Python framework for orchestrating role-based, collaborating SI agents.
OpenAI Agents SDK
OpenAI's lightweight open-source SDK for building multi-agent workflows with handoffs, guardrails, and tracing.
LlamaIndex
Open-source data framework for connecting LLMs and agents to external data sources for retrieval and workflows.
Google Agent Development Kit (ADK)
Google's open-source Agent Development Kit for building, testing, and deploying agents, with support for multiple languages.