Graphistry 2019 in open source signals quite a change: PyGraphistry: ⭐️1K+ stars and 👨🔧100+ forks PyGraphistry is a library to extract, transform, and visually explore big graphs Apache Arrow: 🏆Top 2019 data project (O’Reilly), 👨🔧400+ contributors Apache Arrow is a cross-language development platform for in-memory data. It specifies a standardized language-independent columnar memory format for […]