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Java Library

283 projects

Showing 36 of 283 projects

hivemq-mqtt-client
hivemq-mqtt-clientJava

A high-performance, feature-rich Java client library for MQTT 5.0 and 3.1.1 with multiple API flavors and backpressure support.

#iot#java-library#mqtt-5
Stars1.1k
Forks188
Last commit1 day ago
graphql-spqr
graphql-spqrJava

A Java library for rapid development of GraphQL APIs using a code-first approach.

#java-library#graphql#graphql-api
Stars1.1k
Forks182
Last commit9 months ago
OpenAPI Diff (k)
OpenAPI Diff (k)Java

A utility for comparing two OpenAPI 3.x specifications and rendering differences in HTML, Markdown, Asciidoc, JSON, or plain text.

#java-library#api#swagger
Stars1.1k
Forks189
Last commit1 month ago
hppc
hppcJava

High-performance Java collections for primitive types with open internals and custom API design.

#java-library#high-performance#performance-optimization
Stars1.1k
Forks167
Last commit10 days ago
bifurcan
bifurcanJava

A Java library providing high-performance mutable and immutable data structures with functional semantics, efficient batch operations, and custom equality.

#functional-programming#java-library#high-performance
Stars1.0k
Forks55
Last commit7 days ago
Spatial4j
Spatial4jJava

A general-purpose geospatial Java library providing shapes, distance calculations, and format support for Euclidean and geodesic models.

#java-library#geojson#geospatial
Stars963
Forks175
Last commit2 months ago
DataSketches
DataSketchesJava

A Java library of stochastic streaming algorithms (sketches) for approximate analysis of massive datasets.

#statistical-analysis#data-sketching#java-library
Stars957
Forks227
Last commit5 days ago
zt-exec
zt-execJava

A Java library for executing external processes with improved stream handling, timeouts, exit code checking, and a fluent API.

#slf4j-integration#async-processes#java-library
Stars921
Forks112
Last commit1 day ago
MCProtocolLib
MCProtocolLibJava

A Java library for communicating with Minecraft clients and servers, enabling custom bots, clients, and servers.

#java-library#library#protocol-handling
Stars908
Forks221
Last commit10 days ago
Bluetooth LE Library for Android
Bluetooth LE Library for AndroidJava

An Android library for easy Bluetooth LE device scanning, advertisement record parsing, and iBeacon support.

#bluetooth-le#java-library#rssi
Stars881
Forks330
Last commit1 year ago
iCal4j
iCal4jJava

A Java library for parsing and building iCalendar data models, supporting RFC standards for calendar data interchange.

#java-library#library#gradle-build
Stars839
Forks223
Last commit12 hours ago
Governator
GovernatorJava

A library of extensions and utilities that enhance Google Guice with lifecycle management, classpath scanning, and configuration mapping.

#gradle#java-library#dependency-injection
Stars828
Forks171
Last commit10 months ago
MultiViewAdapter
MultiViewAdapterJava

A library for creating complex RecyclerView adapters with multiple view types, selection, expansion, and drag-and-drop in Android.

#java-library#adapter#recyclerview
Stars813
Forks146
Last commit5 years ago
JSAT
JSATJava

A pure Java machine learning library with no external dependencies, offering a wide collection of algorithms and parallel execution support.

#gpl-licensed#statistical-analysis#parallel-computing
Stars796
Forks208
Last commit3 years ago
cactoos
cactoosJava

A collection of object-oriented Java primitives as an alternative to procedural libraries like Guava and Apache Commons.

#functional-programming#java-library#oop
Stars781
Forks178
Last commit1 day ago
Clarity
ClarityJava

A high-performance Java parser for Dota 2, CSGO, CS2, and Deadlock replay files.

#cs2#game-analytics#java-library
Stars773
Forks131
Last commit19 days ago
Serenity BDD
Serenity BDDHTML

A Java library for writing cleaner automated acceptance tests with rich living documentation and integration with Selenium, Playwright, and BDD tools.

#playwright#java-library#selenium
Stars755
Forks544
Last commit10 days ago
JSLT ()
JSLT ()Java

A complete query and transformation language for JSON, inspired by jq, XPath, and XQuery.

#jq-alternative#java-library#json-query
Stars702
Forks130
Last commit14 days ago
Fenzo
FenzoJava

A Java library for Apache Mesos frameworks that provides extensible task scheduling with optimization plugins and cluster autoscaling.

#bin-packing#apache-mesos#java-library
Stars698
Forks113
Last commit3 years ago
FastCSV
FastCSVJava

A fast, lightweight, and RFC 4180 compliant CSV library for Java with zero dependencies and a ~90 KiB footprint.

#csv-reader#java-library#open-source
Stars693
Forks102
Last commit27 days ago
com.google.oauth-client/google-oauth-client
com.google.oauth-client/google-oauth-clientJava

A Java library for OAuth 1.0a and OAuth 2.0 authorization, designed to work with any OAuth service on the web.

#oauth#java-library#oauth2
Stars662
Forks283
Last commit8 days ago
Android-Image-Filter
Android-Image-FilterC++

An Android library providing 19 efficient image filters with NDK optimization for real-time processing.

#image-filters#java-library#graphics
Stars657
Forks171
Last commit10 years ago
CosId
CosIdJava

A universal, flexible, and high-performance distributed ID generator for Java applications.

#generator#idgenerator#java-library
Stars652
Forks87
Last commit1 day ago
Scalar DB
Scalar DBJava

A universal HTAP engine providing ACID transactions and real-time analytics across diverse databases.

#database#java-library#htap-engine
Stars643
Forks44
Last commit1 day ago
ScaleCube
ScaleCubeJava

A high-throughput, low-latency reactive microservices library with built-in service discovery, load balancing, and pluggable API gateways.

#api-gateway#java-library#swim-protocol
Stars639
Forks112
Last commit1 day ago
ScaleCube Services
ScaleCube ServicesJava

A high-throughput, low-latency reactive microservices library with built-in service discovery, load balancing, and pluggable API gateways.

#api-gateway#java-library#swim-protocol
Stars639
Forks112
Last commit1 day ago
libaddressinput
libaddressinputC++

Google's open-source library for international postal address validation and form generation.

#java-library#postal-address#internationalization
Stars632
Forks110
Last commit5 months ago
Chemistry Development Kit
Chemistry Development KitJava

An open-source Java library for cheminformatics and bioinformatics, providing algorithms for molecular representation, analysis, and data processing.

#code4lib#cheminformatics#java-library
Stars610
Forks179
Last commit1 day ago
asynchbase
asynchbaseJava

A fully asynchronous, non-blocking, thread-safe, high-performance Java client for HBase.

#java-library#high-performance#non-blocking
Stars609
Forks300
Last commit3 years ago
Glide Bitmap Pool
Glide Bitmap PoolJava

A memory management library for Android that reuses bitmap memory to reduce garbage collection and improve app performance.

#bitmap#java-library#glide
Stars601
Forks101
Last commit2 years ago
Google Play crawler (Java)
Google Play crawler (Java)Java

A Java API for searching and downloading Android applications from Google Play, with device emulation capabilities.

#java-library#apk-downloader#android
Stars595
Forks210
Last commit3 years ago
Ayza
AyzaJava

A high-level SSL/TLS configuration library for Java, Kotlin, and Scala HTTP clients and servers with hot reloading and rich utilities.

#hot-reloading#java-library#truststore
Stars580
Forks78
Last commit5 days ago
JavaFastPFOR
JavaFastPFORJava

A high-performance Java library for compressing arrays of integers, optimized for databases and information retrieval.

#java-library#information-retrieval#high-performance
Stars570
Forks67
Last commit19 hours ago
Big Queue
Big QueueJava

A high-performance, disk-backed queue library using memory-mapped files for fast, persistent, and thread-safe data processing.

#java-library#message-queue#persistent-queue
Stars567
Forks215
Last commit4 years ago
sejda
sejdaJava

A task-oriented Java SDK for PDF manipulation with ready-to-use operations and extensible architecture.

#pdf-editing#java-library#open-source
Stars548
Forks70
Last commit7 days ago
PortEx
PortExJava

A Java library for static malware analysis of Portable Executable files with robust handling of malformations.

#java-library#portable-executable#entropy-calculation
Stars543
Forks90
Last commit3 days ago
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