Java

libwally-coreElementsProject/libwally-core

A cross-platform library of cryptographic primitives for building cryptocurrency wallets.

Jtwigjtwig/jtwig

A modern, modular template engine for Java applications with a rich extension ecosystem.

react-native-collapsing-toolbarcesardeazevedo/react-native-collapsing-toolbar

A React Native wrapper for Android's CollapsingToolbarLayout with built-in support for Animated.Event and FlatList.

JavaSymbolSolverjavaparser/javasymbolsolver

A Java symbol solver that resolves type references and declarations in Java code by analyzing JavaParser ASTs.

Riemann JVM Profilerriemann/riemann-jvm-profiler

A JVM agent that sends function-level profiler telemetry from any JVM process to Riemann for performance analysis.

Genizero-one-group/geni

An idiomatic Clojure dataframe library that runs on Apache Spark, providing a seamless interface for data processing and machine learning.

methanolmizosoft/methanol

Lightweight HTTP extensions for Java's built-in HttpClient, adding multipart uploads, caching, decompression, and object mapping.

Micrometer Tracingmicrometer-metrics/tracing

A vendor-neutral tracing facade for Java applications that abstracts over different tracing systems and reporters.

WowAhoo-Wang/Wow

A Kotlin/Java framework for building reactive, event-sourced microservices using DDD and CQRS patterns.

Snow Owlb2ihealthcare/snow-owl

A production-ready, scalable, open-source terminology server supporting SNOMED CT, LOINC, RxNorm, ICD-10/11, and custom code systems with FHIR compliance.

neo4j-shell-toolsjexp/neo4j-shell-tools

A collection of import/export commands for the Neo4j shell to load and dump graph data in various formats.

Google Tinktink-crypto/tink-java

A Google-developed Java cryptography library providing secure, misuse-resistant APIs for developers.

SeLionpaypal/SeLion

A Java test automation framework built on TestNG and Selenium for web and mobile applications.

graphql-java-extended-scalarsgraphql-java/graphql-java-extended-scalars

A library providing extended custom scalar types for GraphQL Java implementations, including date/time, numeric ranges, and specialized formats.

graphql-cljtendant/graphql-clj

A Clojure library providing a full GraphQL implementation with schema validation, query execution, and high-performance parsing.

Kroxyliciouskroxylicious/kroxylicious

A snappy open-source proxy for Apache Kafka that enables encryption, multi-tenancy, and schema validation.

tigoncaskdata/tigon

An open-source real-time stream processing framework combining high-throughput event processing with low-latency SQL-like streaming queries.

SmartGattLibmovisens/SmartGattLib

A Java library that simplifies working with Bluetooth SMART (BLE) devices by providing GATT specification UUIDs and characteristic interpretation.

Gandalfbtkelly/gandalf

An Android library for remotely managing app alerts, optional updates, and mandatory version blocking via a hosted JSON file.

Sundialknowm/Sundial

A lightweight Java job scheduling framework forked from Quartz, stripped down to essentials and easy to integrate.

GradleRIOwpilibsuite/GradleRIO

The official Gradle plugin for building and deploying robot code in the FIRST Robotics Competition.

fastmathgenerateme/fastmath

A high-performance Clojure math library optimized for primitive operations, featuring statistics, random numbers, vectors, matrices, and numerical methods.

Towerptaoussanis/tower

A simple, idiomatic internationalization and localization library for Clojure and ClojureScript.

docker-java-apiamihaiemil/docker-java-api

A lightweight, object-oriented Java library for interacting with the Docker Engine API.

dynamodb-geoawslabs/dynamodb-geo

A Java library for creating and querying geospatial data in Amazon DynamoDB using geohash indexing.

Mongojackmongojack/mongojack

MongoJack maps Java objects to MongoDB documents using Jackson for seamless POJO-based database operations.

geojson-jacksonopendatalab-de/geojson-jackson

A Java library providing GeoJSON POJOs for seamless serialization and deserialization with Jackson.

dynamodb-cross-region-libraryawslabs/dynamodb-cross-region-library

A client-side Java library for replicating Amazon DynamoDB tables across AWS regions using DynamoDB Streams.

Android-DDPdelight-im/Android-DDP

A library implementing Meteor's Distributed Data Protocol (DDP) for building native Android apps with real-time backend connectivity.

metrics-influxdbdavidB/metrics-influxdb

A lightweight Java reporter that sends metrics from the Metrics library to an InfluxDB server.

Bluepotandrewmichaelsmith/bluepot

A Java-based Bluetooth honeypot for Linux that detects and analyzes Bluetooth-based attacks like BlueBugging and BlueSnarfing.

react-native-ultimate-configmaxkomarychev/react-native-ultimate-config

A unified configuration management library for React Native apps, providing environment variables across JavaScript, native code, and build tools.

rxjava-extrasdavidmoten/rxjava-extras

A collection of utilities, operators, and serialization helpers for RxJava 1 to simplify reactive programming tasks.

jfr-flame-graphchrishantha/jfr-flame-graph

Converts Java Flight Recorder method profiling samples into FlameGraph-compatible stack traces for performance analysis.

BIDMatBIDData/BIDMat

A CPU and GPU-accelerated matrix library optimized for high-performance data mining operations.

recheck-webretest/recheck-web

A Golden Master-based test framework for Selenium that enables deep visual and functional regression testing with unbreakable element identification.