RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

A libre lightweight streaming front-end for Android.

Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

Jenkins automation server

Redisson - Valkey & Redis Java client. Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Over 50 Valkey and Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queue,…

The ZAP by Checkmarx Core project

Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.

Apache Druid: a high performance real-time analytics database.

Access your entire server infrastructure from your local desktop

Very spicy additions to the Java programming language.

🔎 Open source distributed and RESTful search engine.

OpenRefine is a free, open source power tool for working with messy data and improving it

CoreNLP: A Java suite of core NLP tools for tokenization, sentence segmentation, NER, parsing, coreference, sentiment analysis, etc.

Java JsonPath implementation

Distributed and fault-tolerant realtime computation: stream processing, continuous computation, distributed RPC, and more

📈 Capturing JVM- and application-level metrics. So you know what's going on.

Tiny, easily embeddable HTTP server in Java.

Use SQL to query Elasticsearch

AI + Data, online. https://vespa.ai

Haven is for people who need a way to protect their personal spaces and possessions without compromising their own privacy, through an Android app and on-device sensors

Micronaut Application Framework

JSqlParser parses an SQL statement and translate it into a hierarchy of Java classes. The generated hierarchy can be navigated using the Visitor Pattern

OsmAnd

AIMSICD • Fight IMSI-Catcher, StingRay and silent SMS!

Apache Calcite

An application observability facade for the most popular observability tools. Think SLF4J, but for observability.

Speech and Vision Based Intelligent Personal Assistant

A machine learning software for extracting information from scholarly documents

CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.

Java implementation of the Tron whitepaper