Java

JLessCi-net-software/jlessc

A high-performance Less CSS compiler written in pure Java, designed for compatibility with Bootstrap.

react-native-digitsfixt/react-native-digits

A React Native wrapper for Twitter's Digits SDK, enabling phone number-based authentication in mobile apps.

Wilmaepam/Wilma

A service virtualization tool combining service stub and HTTP/HTTPS transparent proxy capabilities for development and testing.

Echopraxiatersesystems/echopraxia

A Java structured logging API that provides named arguments, custom field mappings, and conditional logging for Logback, Log4J2, and JUL.

brainsjedld/brains-jruby

A feedforward neural network implementation for JRuby that provides machine learning capabilities with Java backend performance.

Vert.x Elasticsearch Serviceenglishtown/vertx-elasticsearch-service

A Vert.x 3 service that provides Elasticsearch operations via the Vert.x event bus.

Q*certquerycert/qcert

A framework for developing and verifying domain-specific languages, with a focus on query, rules, and smart contract languages.

warc2htmliipc/warc2html

Converts WARC web archive files to static HTML with relative links for offline browsing or rehosting.

FitKeithYokoma/Fit

A lightweight Android library for executing version-specific procedures during app updates or new installations.

Medeia Validatorworldturner/medeia-validator

A streaming JSON Schema validator for Java/Kotlin JVM applications, supporting drafts 04, 06, and 07 with Jackson and Gson.

dropwizard-cassandracomposable-systems/dropwizard-cassandra

A Dropwizard bundle providing configuration, health checks, metrics, and dependency injection for Cassandra integration.

react-native-dropdown-androidchymtt/ReactNativeDropdownAndroid

A React Native wrapper for Android's native Spinner component, providing a simple dropdown UI element.

dropwizard-elasticsearchdropwizard/dropwizard-elasticsearch

Provides managed Elasticsearch client integration and health checks for Dropwizard Java applications.

dropwizard-graphqlsmoketurner/dropwizard-graphql

A Dropwizard bundle for adding GraphQL API endpoints to Java applications.

Node HL7MatthewVita/node-hl7-complete

A Node.js module that bridges to the Java Hapi HL7 library for bidirectional transformation between HL7 messages and JavaScript objects.

react-native-invoke-appvicke4/react-native-invoke-app

A React Native module to bring your app to foreground from Headless JS background tasks.

SnobotSimsnobotsim/SnobotSim

A Java-based simulator for FRC robots written in Java, with support for C++ and Python.

Vert.x Child Processvietj/vertx-childprocess

A Vert.x extension for spawning and managing child processes with non-blocking I/O.

gdx-facebookTomGrill/gdx-facebook

A libGDX extension providing cross-platform support for Facebook Graph API for Android, iOS, Desktop, and HTML games.

Refactoring Golf Katadaviddenton/refactoring-golf

A game to practice refactoring skills by transforming code between numbered holes with minimal strokes.

Indexer4jhaeungun/indexer4j

A lightweight Java library for full-text indexing and searching with annotation-based document mapping.

react-native-image-intentsonnylazuardi/react-native-image-intent

A React Native Android library for receiving images shared from other apps via Android intents.

Cassandra-ClientKindrat/cassandra-client

A simple GUI client for connecting to, exploring, and managing Apache Cassandra 3 databases.

dregexmarianobarrios/dregex

A Java regular expression engine using deterministic finite automata (DFA) for linear matching time and set operations.

influxdb-pluginjenkinsci/influxdb-plugin

A Jenkins plugin that collects build metrics and custom data from pipelines and sends them to InfluxDB for monitoring and analytics.

DependencyCheckjeremylong/DependencyCheck

OWASP's software composition analysis tool that identifies project dependencies and checks for known vulnerabilities.

ConDroidJulianSchuette/ConDroid

A tool for automated concolic (symbolic/concrete) execution of Android apps to drive execution to specific code locations without manual interaction.

react-native-batteryoojr/react-native-battery

A cross-platform React Native module for monitoring device battery level and charging status on iOS and Android.

RS-FISHPreibischLab/RS-FISH

An open-source tool for precise, interactive, fast, and scalable spot detection in 2D/3D microscopy images for FISH-based spatial genomics.

dropwizard-protobufdropwizard/dropwizard-protobuf

A Jersey JAX-RS Entity Provider for reading and writing Google Protocol Buffer messages in Dropwizard applications.

dropwizard-consulsmoketurner/dropwizard-consul

A Dropwizard bundle for integrating Consul service discovery, configuration, and health checks into Java applications.

beagletokenmill/beagle

A text stream monitoring library that detects keywords, phrases, regexes, and complex Lucene queries in documents.

OpenStaticAnalyzersed-inf-u-szeged/OpenStaticAnalyzer

A platform-independent static analysis tool that performs deep code quality analysis for Java, Python, C#, JavaScript, and C/C++ systems.

react-native-sms-androidrhaker/react-native-sms-android

A React Native module for sending SMS messages and reading SMS inbox on Android devices.

Failsafe Actuatorzalando/failsafe-actuator

A Java library that exposes Failsafe circuit breaker states via Spring Boot Actuator endpoints.

anim8-gdxtommyettinger/anim8-gdx

A libGDX library for writing animated GIF, indexed PNG (PNG8), and animated PNG (APNG) files with advanced palette reduction and dithering.