Free universal database tool and SQL client

Apache Flink

Powerful and flexible library for loading, caching and displaying images on Android.

The official home of the Presto distributed SQL query engine for big data

greenDAO is a light & fast ORM solution for Android that maps objects to SQLite databases.

The Metadata Platform for your Data and AI Stack

The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance …

An asynchronous, callback-based Http client for Android built on top of Apache's HttpClient libraries.

Apache Iceberg

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

Enso Analytics is a self-service data prep and analysis platform designed for data teams.

Asynchronous Http and WebSocket Client library for Java

configuration library for JVM languages using HOCON files

Apache NiFi

Apache Calcite

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.

Micro second messaging that stores everything to disk

Simple Binary Encoding (SBE) - High Performance Message Codec

Open, Multi-modal Catalog for Data & AI

TLC is a model checker for specifications written in TLA+. The TLA+Toolbox is an IDE for TLA+.

Access other storage backends via the S3 API

Pravega - Streaming as a new software defined storage primitive

The JGroups project

A example of an android app that receives push notifications using MQTT.

Erlang IDE

A relational database with SQL support built on FoundationDB

Simple, fast and typesafe Java actor model implementation

JavaFlow reimagines the core ideas of FoundationDB's Flow actor framework in idiomatic Java, leveraging JDK continuations instead of any custom compiler or preprocessor.