[johnnycerberus]

Don't forget about the Java machine learning & deep learning "renaissance": Deeplearning4j https://deeplearning4j.org/, Konduit Serving https://serving.konduit.ai/, Amazon's open-source DJL https://djl.ai/ Apache Mahout https://mahout.apache.org/ Apache Arrow https://arrow.apache.org/

TensorFlow can run on any JVM for building, training and running machine learning models. They have created recently https://github.com/tensorflow/java

PyTorch also supports inference on the JVM but you still need to train with Python. https://www.infoq.com/news/2020/02/pytorch-releases-java-bin...

I think something like Scala will be used in the future instead of Python even for prototyping.

Streaming is also big business on the JVM: Apache Kafka https://kafka.apache.org/ (80% of Fortune 100 companies use it) Apache Flink https://flink.apache.org/ Apache Storm https://storm.apache.org/

Hard to think that .NET ecosystem will ever reach the ecosystem of Java when it comes to open-source.