☕ Awesome Java

Projects 121–180 of 758, most starred first

• google/error-prone on GitHub, opens in a new tab

  7.2Kstars

  ★ 7.2k Apache-2.0 🟢Catches common programming mistakes as compile-time errors.

  Java·Apache License 2.0·active·22 hours ago

• rest-assured/rest-assured on GitHub, opens in a new tab

  7.1Kstars

  ★ 7.1k Apache-2.0 🟢DSL for easy testing of REST/HTTP services.

  Java·Apache License 2.0·active·4 weeks ago

• junit-team/junit-framework on GitHub, opens in a new tab

  7Kstars

  ★ 7.0k EPL-2.0 🟢Common testing framework.

  Java·Eclipse Public License 2.0·active·3 hours ago

• gatling/gatling on GitHub, opens in a new tab

  6.9Kstars

  ★ 6.9k Apache-2.0 🟢Load testing tool designed for ease of use, maintainability and high performance.

  Scala·Apache License 2.0·active·3 weeks ago

• raphw/byte-buddy on GitHub, opens in a new tab

  6.9Kstars

  ★ 6.9k Apache-2.0 🟢Further simplifies bytecode generation with a fluent API.

  Java·Apache License 2.0·active·18 hours ago

• sdkman/sdkman-cli on GitHub, opens in a new tab

  6.8Kstars

  ★ 6.8k Apache-2.0 🟢Java Version Manager inspired by RVM and rbenv. Supports UNIX-based platforms and Windows.

  Shell·Apache License 2.0·active·2 weeks ago

• jOOQ/jOOQ on GitHub, opens in a new tab

  6.8Kstars

  ★ 6.8k 🟢Generates typesafe code based on SQL schema.

  Java·Other·active·5 days ago

• quartz-scheduler/quartz on GitHub, opens in a new tab

  6.7Kstars

  ★ 6.7k Apache-2.0 🟢Feature-rich, open source job scheduling library that can be integrated within virtually any Java application.

  Java·Apache License 2.0·active·7 days ago

• apache/storm on GitHub, opens in a new tab

  6.7Kstars

  ★ 6.7k Apache-2.0 🟢Realtime computation system.

  Java·Apache License 2.0·active·6 days ago

• jenv/jenv on GitHub, opens in a new tab

  6.7Kstars

  ★ 6.7k MIT 🟠Java Version Manager inspired by rbenv. Can configure globally or per project. Tested on Debian and macOS.

  Shell·MIT License·steady·6 months ago

• graphhopper/graphhopper on GitHub, opens in a new tab

  6.6Kstars

  ★ 6.6k Apache-2.0 🟢Road-routing engine. Used as a Java library or standalone web service.

  Java·Apache License 2.0·active·2 days ago

• gephi/gephi on GitHub, opens in a new tab

  6.6Kstars

  ★ 6.6k GPL-3.0 🟢Cross-platform for visualizing and manipulating large graph networks.

  Java·GNU General Public License v3.0·active·last week

• hazelcast/hazelcast on GitHub, opens in a new tab

  6.6Kstars

  ★ 6.6k 🟢Highly scalable in-memory datagrid with a free open-source version.

  Java·Other·active·2 days ago

• EsotericSoftware/kryo on GitHub, opens in a new tab

  6.5Kstars

  ★ 6.5k BSD-3-Clause 🟢Fast and efficient object graph serialization framework.

  HTML·BSD 3-Clause "New" or "Revised" License·active·5 hours ago

• hibernate/hibernate-orm on GitHub, opens in a new tab

  6.5Kstars

  ★ 6.5k Apache-2.0 🟢Robust and widely used, with an active community.

  Java·Apache License 2.0·active·9 hours ago

• micronaut-projects/micronaut-core on GitHub, opens in a new tab

  6.4Kstars

  ★ 6.4k Apache-2.0 🟢Modern full-stack framework with focus on modularity, minimal memory footprint and startup time.

  Java·Apache License 2.0·active·4 hours ago

• haifengl/smile on GitHub, opens in a new tab

  6.4Kstars

  ★ 6.4k 🟢Statistical Machine Intelligence and Learning Engine provides a set of machine learning algorithms and a visualization library.

  Java·Other·active·4 hours ago

• AsyncHttpClient/async-http-client on GitHub, opens in a new tab

  6.4Kstars

  ★ 6.4k Apache-2.0 🟢Asynchronous HTTP and WebSocket client library.

  Java·Apache License 2.0·active·21 hours ago

• joelittlejohn/jsonschema2pojo on GitHub, opens in a new tab

  6.4Kstars

  ★ 6.4k Apache-2.0 🟠Generates Java types from JSON Schema or example JSON.

  Java·Apache License 2.0·steady·4 months ago

• lightbend/config on GitHub, opens in a new tab

  6.3Kstars

  ★ 6.3k 🟢Configuration library supporting Java properties, JSON or its human optimized superset HOCON.

  Java·active·2 months ago

• apache/camel on GitHub, opens in a new tab

  6.3Kstars

  ★ 6.3k Apache-2.0 🟢Glues together different transport APIs via Enterprise Integration Patterns.

  Java·Apache License 2.0·active·8 hours ago

• Vedenin/useful-java-links on GitHub, opens in a new tab

  6.2Kstars

  Java·Other·steady·3 months ago

• google/google-java-format on GitHub, opens in a new tab

  6.2Kstars

  ★ 6.2k 🟢Reformats Java source code to follow Google Java Style.

  Java·Other·active·4 days ago

• vavr-io/vavr on GitHub, opens in a new tab

  6.2Kstars

  ★ 6.2k Apache-2.0 🟢Functional component library that provides persistent data types and functional control structures.

  Java·Apache License 2.0·active·11 hours ago

• apache/fesod on GitHub, opens in a new tab

  6.2Kstars

  ★ 6.2k Apache-2.0 🟢Memory-efficient library for reading and writing large spreadsheet files.

  Java·Apache License 2.0·active·15 hours ago

• javaparser/javaparser on GitHub, opens in a new tab

  6.1Kstars

  ★ 6.1k 🟢Parse, modify and generate Java code.

  Java·Other·active·11 hours ago

• google/j2objc on GitHub, opens in a new tab

  6Kstars

  ★ 6.0k 🟢Java-to-Objective-C translator for porting Android libraries to iOS.

  Java·Other·active·3 days ago

• robolectric/robolectric on GitHub, opens in a new tab

  6Kstars

  ★ 6.0k 🟢Runs Android tests on the JVM without an emulator or device.

  Java·Other·active·4 hours ago

• opengoofy/hippo4j on GitHub, opens in a new tab

  6Kstars

  ★ 6.0k Apache-2.0 🟠Dynamic and observable thread pool framework.

  Java·Apache License 2.0·steady·5 months ago

• btraceio/btrace on GitHub, opens in a new tab

  6Kstars

  ★ 6.0k Apache-2.0 🟢Dynamic tracing and diagnostics for running JVM applications without restarts.

  Java·Apache License 2.0·active·11 hours ago

• lets-blade/blade on GitHub, opens in a new tab

  5.9Kstars

  ★ 5.9k Apache-2.0 🟠Lightweight, modular framework that aims to be elegant and simple.

  Java·Apache License 2.0·steady·3 months ago

• JanusGraph/janusgraph on GitHub, opens in a new tab

  5.8Kstars

  ★ 5.8k 🟢Distributed graph database supporting pluggable storage and indexing backends.

  Java·Other·active·4 weeks ago

• redis/lettuce on GitHub, opens in a new tab

  5.8Kstars

  ★ 5.8k MIT 🟢Lettuce is a scalable Redis client for building non-blocking Reactive applications.

  Java·MIT License·active·3 days ago

• diffplug/spotless on GitHub, opens in a new tab

  5.6Kstars

  ★ 5.6k Apache-2.0 🟢A versatile code formatter for Gradle and Maven that enforces multiple styles (including Google and Palantir) across Java and other languages.

  Java·Apache License 2.0·active·11 hours ago

• alibaba/jetcache on GitHub, opens in a new tab

  5.6Kstars

  ★ 5.6k Apache-2.0 🟢Java cache framework with local and distributed caching, annotations and asynchronous APIs.

  Java·Apache License 2.0·active·2 weeks ago

• liquibase/liquibase on GitHub, opens in a new tab

  5.6Kstars

  ★ 5.6k 🟢Database-independent library for tracking, managing and applying database schema changes.

  Java·Other·active·4 hours ago

• rubenlagus/TelegramBots on GitHub, opens in a new tab

  5.5Kstars

  ★ 5.5k MIT 🟢Java library for building bots with the Telegram Bot API.

  Java·MIT License·active·5 days ago

• pmd/pmd on GitHub, opens in a new tab

  5.5Kstars

  ★ 5.5k 🟢Source code analysis for finding bad coding practices.

  Java·Other·active·2 days ago

• scribejava/scribejava on GitHub, opens in a new tab

  5.5Kstars

  ★ 5.5k MIT 🟢OAuth client library supporting OAuth 1.0a, OAuth 2.0 and numerous providers.

  Java·MIT License·steady·3 months ago

• coobird/thumbnailator on GitHub, opens in a new tab

  5.4Kstars

  ★ 5.4k MIT 🟠High-quality thumbnail generation library.

  Java·MIT License·steady·6 months ago

• LWJGL/lwjgl3 on GitHub, opens in a new tab

  5.4Kstars

  ★ 5.4k BSD-3-Clause 🟢Robust framework that abstracts libraries like OpenGL/CL/AL.

  Java·BSD 3-Clause "New" or "Revised" License·active·4 days ago

• remkop/picocli on GitHub, opens in a new tab

  5.4Kstars

  ★ 5.4k Apache-2.0 🟢ANSI colors and styles in usage help with annotation-based POSIX/GNU/any syntax, subcommands, strong typing for both options and positional args.

  Java·Apache License 2.0·active·yesterday

• socketio/socket.io-client-java on GitHub, opens in a new tab

  5.4Kstars

  ★ 5.4k 🔴Java client for Socket.IO servers.

  Java·Other·slowing·last year

• LFDT-web3j/web3j on GitHub, opens in a new tab

  5.4Kstars

  ★ 5.4k 🟢Java and Android library for integrating with Ethereum-compatible blockchains.

  Java·Other·active·3 weeks ago

• apache/maven on GitHub, opens in a new tab

  5.3Kstars

  ★ 5.3k Apache-2.0 🟢Declarative build and dependency management that favors convention over configuration. It might be preferable to Apache Ant, which uses a rather procedural approach and can be difficult to maintain.

  Java·Apache License 2.0·active·8 hours ago

• bitcoinj/bitcoinj on GitHub, opens in a new tab

  5.2Kstars

  ★ 5.2k Apache-2.0 🟢Library for working with the Bitcoin protocol and network.

  Java·Apache License 2.0·active·9 hours ago

• apache/calcite on GitHub, opens in a new tab

  5.2Kstars

  ★ 5.2k Apache-2.0 🟢Dynamic data management framework. It contains many of the pieces that comprise a typical database management system.

  Java·Apache License 2.0·active·12 hours ago

• line/armeria on GitHub, opens in a new tab

  5.1Kstars

  ★ 5.1k Apache-2.0 🟢Asynchronous RPC/REST client/server library built on top of Java 8, Netty, HTTP/2, Thrift and gRPC.

  Java·Apache License 2.0·active·4 days ago

• spring-projects/spring-authorization-server on GitHub, opens in a new tab

  5.1Kstars

  ★ 5.1k Apache-2.0 🟢Implements OAuth 2.1 and OpenID Connect authorization server specifications for Spring.

  Java·Apache License 2.0·active·2 weeks ago

• agentscope-ai/agentscope-java on GitHub, opens in a new tab

  5.1Kstars

  ★ 5.1k 🟢Framework for building distributed, long-running AI agents with tool execution, persistence and multi-agent orchestration.

  Java·active·yesterday

• jankotek/mapdb on GitHub, opens in a new tab

  5Kstars

  ★ 5.0k Apache-2.0 🟢Embedded database engine that provides concurrent collections backed on disk or in off-heap memory.

  Java·Apache License 2.0·active·4 weeks ago

• querydsl/querydsl on GitHub, opens in a new tab

  5Kstars

  ★ 5.0k Apache-2.0 🟢Typesafe unified queries.

  Java·Apache License 2.0·active·3 months ago

• mock-server/mockserver-monorepo on GitHub, opens in a new tab

  4.9Kstars

  ★ 4.9k Apache-2.0 🟢Allows mocking of systems integrated with HTTPS.

  Java·Apache License 2.0·active·4 hours ago

• spring-cloud/spring-cloud-gateway on GitHub, opens in a new tab

  4.9Kstars

  ★ 4.9k Apache-2.0 🟢API gateway built on Spring Framework and Spring Boot.

  Java·Apache License 2.0·active·6 days ago

• micrometer-metrics/micrometer on GitHub, opens in a new tab

  4.9Kstars

  ★ 4.9k Apache-2.0 🟢Vendor-neutral metrics/observability facade for the most popular metrics/observability libraries.

  Java·Apache License 2.0·active·3 days ago

• reactive-streams/reactive-streams-jvm on GitHub, opens in a new tab

  4.9Kstars

  ★ 4.9k MIT-0 🔴Provides a standard for asynchronous stream processing with non-blocking backpressure.

  Java·MIT No Attribution·slowing·2 years ago

• AlmasB/FXGL on GitHub, opens in a new tab

  4.8Kstars

  ★ 4.8k MIT 🟢JavaFX Game Development Framework.

  Kotlin·MIT License·active·2 months ago

• deepjavalibrary/djl on GitHub, opens in a new tab

  4.8Kstars

  ★ 4.8k Apache-2.0 🟢High-level and engine-agnostic framework for deep learning.

  Java·Apache License 2.0·active·2 weeks ago

• cjlin1/libsvm on GitHub, opens in a new tab

  4.7Kstars

  ★ 4.7k BSD-3-Clause 🟠Support vector machine library with Java bindings and command-line tools.

  Java·BSD 3-Clause "New" or "Revised" License·steady·8 months ago

• bytedeco/javacpp on GitHub, opens in a new tab

  4.7Kstars

  ★ 4.7k 🟢Provides efficient and easy access to native C++.

  Java·Other·active·7 days ago