R's data.table package extends data.frame:

Machine Learning in R

Turn your R code into a web API.

Fast vectorization, topic modeling, distances and GloVe word embeddings in R.

Pre-trained models, data, code & materials from the paper "ImageNet-trained CNNs are biased towards texture; increasing shape bias improves accuracy and robustness" (ICLR 2019 Oral)

A friendly package manager for R

A fast, easy-to-use database library for R