Stanford CoreNLP: A Java suite of core NLP tools.
MIT Deep Learning Book in PDF format (complete and parts) by Ian Goodfellow, Yoshua Bengio and Aaron Courville
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.
A machine learning software for extracting information from scholarly documents
Plugin to integrate Learning to Rank (aka machine learning for better relevance) with Elasticsearch
Oryx 2: Lambda architecture on Apache Spark, Apache Kafka for real-time large scale machine learning
PipelineAI Kubeflow Distribution
The target is to set up a high quality and real-time image process and machine learning library which is implemented in pure java. The framework can run application on java desktop and android platform.
MALLET is a Java-based package for statistical natural language processing, document classification, clustering, topic modeling, information extraction, and other machine learning applications to text.