MIT Deep Learning Book in PDF format (complete and parts) by Ian Goodfellow, Yoshua Bengio and Aaron Courville

Efficient reliable UDP unicast, UDP multicast, and IPC message transport

configuration library for JVM languages using HOCON files

A better compressed bitset in Java: used by Apache Spark, Netflix Atlas, Apache Pinot, Tablesaw, and many others

Source-agnostic distributed change data capture system

Distributed object store

Hollow is a java library and toolset for disseminating in-memory datasets from a single producer to many consumers for high performance read-only access.

Cross-platform mouse/keyboard record/replay and automation hotkeys/macros creation, and more advanced automation features.

An embeddable write-once key-value store written in Java

Java streaming parser/serializer for Ion.

Command line tool (and API) for diffing Excel Workbooks

[DEPRECATED, please check https://github.com/tobyxdd/hysteria]

Compact in-memory representation of directed graph data

Language-agnostic pretty-printing through machine learning (uh, like, is this possible? YES, apparently).

AndroidJSCore allows Android developers to use JavaScript natively in their apps.

The implementation of the Rascal meta-programming language (including interpreter, type checker, parser generator, compiler and JVM based run-time system)

The Capsule Hash Trie Collections Library

Haxe plugin for IntelliJ Platform based IDEs (IDEA, Android-Studio)

A Java implementation of a Generalized Suffix Tree using Ukkonen's algorithm

Grammatica is a C# and Java parser generator (compiler compiler)

C5 Replicator, a Raft protocol-based replication library

java implementation of 2-3 finger trees