LangChain has the largest agent community in Python, the most third-party integrations, the most tutorials. Its strengths are reach and flexibility: anything you can write in Python, you can do in LangChain. Its trade-offs are framework weight, hot-reload friction, and the surface area you have to maintain to ship anything beyond a demo. Honest comparison linked below.
Engineering notes from the Digitorn team. No marketing, no launch announcements, no "10 prompts that will change your life". Just the things we write that we'd want to read.