H2O - the optimized HTTP/1, HTTP/2, HTTP/3 server
H2O is an Open Source, Distributed, Fast & Scalable Machine Learning Platform: Deep Learning, Gradient Boosting (GBM) & XGBoost, Random Forest, Generalized Linear Modeling (GLM with Elastic Net), K-Means, PCA, Generalized Additive Models (GAM), RuleFit, Support Vector Machine (SVM), Stacked Ensembles, Automatic Machine Learning (AutoML), etc.
Realtime Web Apps and Dashboards for Python and R
tiny HTTP parser written in C (used in HTTP::Parser::XS et al.)
H2O LLM Studio - a framework and no-code GUI for fine-tuning LLMs. Documentation: https://docs.h2o.ai/h2o-llmstudio/
A modular QUIC stack designed primarily for H2O
TLS 1.3 implementation in C (master supports RFC8446 as well as draft-26, -27, -28)
The Ultimate Automobile Library