Pillow

pandas is an open-source Python package for working with relational and labeled data through mutable DataFrame and related data structures. It supports missing-data handling, automatic or explicit label alignment, group-by split-apply-combine operations, indexing and slicing, merging and joining, reshaping and pivoting, hierarchical labels, and time-series operations such as date-range generation, frequency conversion, and rolling-window statistics. Its I/O tools load data from CSV and other delimited files, Excel, and databases, and support saving to and loading from HDF5; it is distributed through PyPI and Conda.

Pipecat is an open-source Python framework maintained by Daily and the community for building real-time voice and multimodal conversational agents. It orchestrates audio and video, transports such as WebSockets and WebRTC, speech recognition and text-to-speech services, speech preprocessing, turn detection, model calls, tool calls, and streamed audio through composable conversation pipelines. Pipelines can operate as single agents or as multi-agent systems whose specialists hand off, fan out in parallel, or coordinate over a shared bus locally or across processes and machines. The project also provides a CLI for scaffolding, monitoring, and deploying agents, along with client SDKs and related tools for structured conversations and pipeline debugging.

npcpy is a Python library for research and development with multimodal language models, agentic AI, and knowledge graphs. It provides primitives for defining personas, making direct language-model calls, creating tool-using agents and multi-agent teams, and building AI applications with local providers such as Ollama, llama.cpp, omlx, and LM Studio as well as cloud providers. Its NPC Context-Agent-Tool data layer is designed to enforce context and tool-use rules through software rather than prompts. The Agent class includes tools such as shell execution, Python, file editing, and web search, while ToolAgent supports custom tools; the examples include image generation, Hugging Face image-dataset retrieval, and diffusion-model fine-tuning. The library is distributed through PyPI.

The Python Package Index (PyPI) is the official repository of software for the Python programming language, hosting packages that developers can publish and install via Python package managers. It serves as the central distribution point for Python libraries and tools, providing package metadata, releases, and download endpoints.

MediaPipe is a computer-vision tool that detects facial expressions and gestures, including for video-call reactions.