google-deepmind/simply

A Lightweight LLM Post-Training Library

An End-to-End Infrastructure for Training and Evaluating Various LLM Agents

SkyRL: A Modular Full-stack RL Library for LLMs

Democratizing Reinforcement Learning for LLMs

Schema-Guided Reasoning (SGR) has agentic system design created by neuraldeep community

OpenResearcher: A Fully Open Pipeline for Long-Horizon Deep Research Trajectory Synthesis

Agent Reinforcement Trainer: train multi-step agents for real-world tasks using GRPO. Give your agents on-the-job training. Reinforcement learning for Qwen3.6, GPT-OSS, Llama, and more!

AllenAI's post-training codebase

An Easy-to-use, Scalable and High-performance Agentic RL Framework based on Ray (PPO & DAPO & REINFORCE++ & VLM & TIS & vLLM & Ray & Async RL)