Best open-source Python projects

A Python framework for recursive harness optimization that refines the prompts, tools and orchestration around a fixed LLM agent on unseen tasks.

A Claude Code skill that digs into unfamiliar topics citation by citation until it reaches primary sources, then builds an annotated extract page.

A Python library for building styled, publication-quality display tables from pandas or Polars DataFrames, rendered to HTML or images.

An open-source reinforcement learning agent for competitive Guandan, a four-player partnership card game, with a playable web table.

A Claude Code skill that reads your local session logs to explain where token usage went and why you hit limits.

Desktop tool that pulls e-invoices (PDF, OFD, XML) from QQ or 163 email, recognizes them with OCR, sorts them into folders and builds an Excel expense summary.

A Streamlit web app that turns uploaded bitmap images into editable SVG vectors, built on the Vecto .NET tracing engine.

A VS Code extension that turns plain .chat.md files into editable AI chat sessions with MCP tool support across LLM providers.

Self-hosted control plane for TLS certificates that issues, renews, discovers, inventories and deploys them across your infrastructure.

Builds a complete full-text historical archive of an RSS or Atom feed by pulling past posts from the Wayback Machine.

Open-source Python library for building AI agents that control a real browser, with optional Browser Use Cloud stealth browsers and hosted agent API.

Apache Superset is a self-service business intelligence web app for exploring data, building charts, dashboards and running SQL against many databases.

A Python framework and runtime for building, serving, and managing AI agent platforms, with a web UI for administration.

Open-source multi-agent LLM framework that simulates a trading firm, with analyst, researcher, trader and risk agents debating market decisions.

Run-and-benchmark record for serving DeepSeek-V4.1-Flash (552B MoE) across four NVIDIA DGX Sparks using TensorFold and vLLM, with launch scripts and measured results.

An open-source autonomous research agent that plans questions, gathers web and local sources, and writes cited reports with any LLM provider.

A Python web scraping library that uses LLMs and graph-based pipelines to extract structured data from websites and local documents based on a text prompt.

A set of 23 custom plugins for hermes-agent covering autonomy, model routing, telemetry, cost control, memory and inter-agent messaging.

A self-improvement add-on for Hermes Agent that analyzes session failures, patches weak skills, runs GEPA evolution, and reports progress.

Lightweight zipvoice-based TTS model for voice cloning and 48kHz speech generation, running at over 150x realtime on GPU.