DataStax Spark Cassandra Connector
Deep Learning for Java, Scala & Clojure on Hadoop & Spark With GPUs - From Skymind
Sparkling Water provides H2O functionality inside Spark cluster
REST job server for Apache Spark
A cohesive & pragmatic framework of FP centric Scala libraries
MLeap: Deploy Spark Pipelines to Production
ETL Library for Machine Learning
Expressive types for Spark.
Scala client for Amazon Kinesis. Also provides write to Kinesis capability for Apache Spark or Spark Streaming.
Achieving Real-time Data Analytics with Spark and EventHubs
Google BigQuery support for Spark, Structured Streaming, SQL, and DataFrames with easy Databricks integration.
RDF/OWL Querying Library for Spark
C# and F# language binding and extensions to Apache Spark
A Scala library for feature transformation
SANSA Stack OWL (Web Ontology Language) API
Micro Spark Rest API
NetFlow data source for Spark SQL and DataFrames
API enabling switching between Spark execution engine and local fast implementation based on Scala collections.