Microsoft
Largest OpenAI shareholder and the distribution channel for GPT-5 into enterprise via Copilot and Azure OpenAI. Also ships its own Phi small-model family, VS Code with GitHub Copilot, and the Bing/Copilot search stack.
9 tools in the directory
Semantic Kernel
Microsoft's open-source SDK for wiring LLMs, plugins, and agents into enterprise .NET, Python, and Java apps.
Azure AI Speech (Neural TTS)
Microsoft's enterprise-grade neural text-to-speech with 100+ languages, custom brand voices, and SSML control.
Agno (formerly Phidata)
Open-source Python framework for building multi-agent systems, paired with a production runtime that ships in your own cloud.
Graphiti
Open-source temporal knowledge graph framework for building agent memory that updates in real time.
Microsoft Designer
Microsoft's consumer design app that wraps DALL-E image generation in templated social, sticker, and invite layouts.
Graphify
Open-source on-device knowledge graph engine that turns code, docs, papers, meetings and images into a queryable graph.
Phind
AI answer engine for developers that cites sources and writes working code.
Chat With PDF by Copilot.us
Conversational PDF Q&A bundled into a multi-app productivity membership.
Microsoft Copilot
Microsoft's consumer AI assistant, formerly Bing Chat, now powered by GPT-4-class models with web grounding and image generation.