☕ Awesome Java

Projects 421–480 of 758, most starred first

• yegor256/takes on GitHub, opens in a new tab

  878stars

  ★ 878 MIT 🟢Opinionated web framework which is built around the concepts of True Object-Oriented Programming and immutability.

  Java·MIT License·active·10 hours ago

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

  865stars

  ★ 865 Apache-2.0 🟢Formatter based on google-java-format with wider lines and lambda-friendly output.

  Java·Apache License 2.0·active·8 hours ago

• allegro/hermes on GitHub, opens in a new tab

  865stars

  ★ 865 🟢Fast and reliable message broker built on top of Kafka.

  Java·Other·active·8 hours ago

• eclipse-jkube/jkube on GitHub, opens in a new tab

  851stars

  ★ 851 EPL-2.0 🟢Maven and Gradle plugins for building and deploying Java applications on Kubernetes.

  Java·Eclipse Public License 2.0·active·5 days ago

• xberg-io/html-to-markdown on GitHub, opens in a new tab

  850stars

  ★ 848 MIT 🟢Converts HTML to CommonMark-compatible Markdown through a Java binding.

  HTML·MIT License·active·yesterday

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

  850stars

  ★ 850 Apache-2.0 🟢JMX over REST.

  Java·Apache License 2.0·active·6 days ago

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

  840stars

  ★ 839 EPL-2.0 🟢Engine for property-based testing built on JUnit 5.

  Java·Eclipse Public License 2.0·active·last week

• ical4j/ical4j on GitHub, opens in a new tab

  837stars

  ★ 837 BSD-3-Clause 🟢Parse and build iCalendar RFC 5545 data models.

  Java·BSD 3-Clause "New" or "Revised" License·active·2 months ago

• gurkenlabs/litiengine on GitHub, opens in a new tab

  835stars

  ★ 835 MIT 🟢AWT-based, lightweight 2D game engine.

  Java·MIT License·active·yesterday

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

  832stars

  ★ 832 🟢EasyMock is a Java library that provides an easy way to use Mock Objects in unit testing.

  HTML·active·16 hours ago

• Netflix/governator on GitHub, opens in a new tab

  829stars

  ★ 829 Apache-2.0 🟠Extensions and utilities that enhance Google Guice.

  Java·Apache License 2.0·steady·8 months ago

• gluonhq/scenebuilder on GitHub, opens in a new tab

  821stars

  ★ 821 🟠Visual layout tool for JavaFX applications.

  Java·Other·steady·4 months ago

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

  795stars

  ★ 794 Apache-2.0 🟢Component-based web application framework similar to Tapestry, with a stateful GUI.

  Java·Apache License 2.0·active·yesterday

• EdwardRaff/JSAT on GitHub, opens in a new tab

  794stars

  ★ 794 GPL-3.0 🔴Algorithms for pre-processing, classification, regression, and clustering with support for multi-threaded execution.

  Java·GNU General Public License v3.0·dormant·4 years ago

• hrldcpr/pcollections on GitHub, opens in a new tab

  788stars

  ★ 787 🔴Persistent and immutable analogue of the Java Collections Framework.

  Java·Other·slowing·last year

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

  786stars

  ★ 786 Apache-2.0 🟠Small, highly modularized, Sinatra-like framework.

  Java·Apache License 2.0·steady·8 months ago

• fizzed/rocker on GitHub, opens in a new tab

  781stars

  ★ 781 🟠Optimized, memory efficient and speedy template engine producing statically typed, plain objects.

  Java·steady·7 months ago

• yegor256/cactoos on GitHub, opens in a new tab

  779stars

  ★ 779 MIT 🟢Collection of object-oriented primitives.

  Java·MIT License·active·yesterday

• imagej/ImageJ on GitHub, opens in a new tab

  779stars

  ★ 780 🟢Medical image processing application with an API.

  Java·Other·active·4 weeks ago

• chocoteam/choco-solver on GitHub, opens in a new tab

  771stars

  ★ 771 BSD-3-Clause 🟢Off-the-shelf constraint satisfaction problem solver that uses constraint programming techniques.

  Java·BSD 3-Clause "New" or "Revised" License·active·9 hours ago

• tinylog-org/tinylog on GitHub, opens in a new tab

  770stars

  ★ 770 Apache-2.0 🟢Lightweight logging framework with static logger class.

  Java·Apache License 2.0·active·9 hours ago

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

  769stars

  ★ 769 Apache-2.0 🟢Fast and efficient columnar storage format for Hadoop-based workloads.

  Java·Apache License 2.0·active·4 days ago

• serenity-bdd/serenity-core on GitHub, opens in a new tab

  754stars

  ★ 754 🟢Automated Acceptance testing and reporting library that works with Cucumber, JBehave and JUnit to make it easier to write high quality executable specifications.

  HTML·Other·active·last month

• cache2k/cache2k on GitHub, opens in a new tab

  742stars

  ★ 742 Apache-2.0 🔴In-memory high performance caching library.

  Java·Apache License 2.0·slowing·last year

• SkillPanel/jfairy on GitHub, opens in a new tab

  742stars

  ★ 742 Apache-2.0 🟢Fake data generator.

  Java·Apache License 2.0·active·14 hours ago

• greenmail-mail-test/greenmail on GitHub, opens in a new tab

  740stars

  ★ 740 Apache-2.0 🟢In-memory email server for integration testing. Supports SMTP, POP3 and IMAP including SSL.

  Java·Apache License 2.0·active·yesterday

• eclipse-ee4j/jersey on GitHub, opens in a new tab

  730stars

  ★ 730 🟢JAX-RS reference implementation.

  Java·Other·active·3 weeks ago

• DataDog/dd-trace-java on GitHub, opens in a new tab

  727stars

  ★ 727 Apache-2.0 🟢Modern monitoring & analytics.

  Java·Apache License 2.0·active·8 hours ago

• apache/commons-collections on GitHub, opens in a new tab

  725stars

  ★ 725 Apache-2.0 🟢Extends or augments the Java Collections Framework.

  Java·Apache License 2.0·active·18 hours ago

• giltene/jHiccup on GitHub, opens in a new tab

  704stars

  ★ 704 🟠Logs and records platform JVM stalls.

  Java·Other·steady·6 months ago

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

  697stars

  ★ 697 Apache-2.0 🟢High-level framework for developing enterprise applications with a rich web interface, based on Spring, EclipseLink and Vaadin.

  Java·Apache License 2.0·active·10 hours ago

• osiegmar/FastCSV on GitHub, opens in a new tab

  690stars

  ★ 691 MIT 🟢Performance-optimized, dependency-free and RFC 4180 compliant.

  Java·MIT License·active·last week

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

  688stars

  ★ 688 MIT 🟢Binary artifact management toolkit which hosts them on the file system or S3.

  Java·MIT License·active·2 months ago

• JodaOrg/joda-money on GitHub, opens in a new tab

  679stars

  ★ 679 Apache-2.0 🟠Basic currency and money classes and algorithms not provided by the JDK.

  Java·Apache License 2.0·steady·8 months ago

• pivovarit/parallel-collectors on GitHub, opens in a new tab

  679stars

  ★ 680 Apache-2.0 🟢Stream API Collectors for parallel processing with custom thread pools, designed for I/O-heavy workloads.

  Java·Apache License 2.0·active·5 days ago

• nats-io/nats.java on GitHub, opens in a new tab

  675stars

  ★ 675 Apache-2.0 🟢NATS client.

  Java·Apache License 2.0·active·4 days ago

• restlet/restlet-framework-java on GitHub, opens in a new tab

  667stars

  ★ 667 🟢Pioneering framework with powerful routing and filtering capabilities, and a unified client and server API.

  Java·Other·active·4 weeks ago

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

  666stars

  ★ 666 Apache-2.0 🟢Highly-available version-controlled service configuration repository based on Git, ZooKeeper and HTTP/2.

  Java·Apache License 2.0·active·3 days ago

• my2iu/Jinq on GitHub, opens in a new tab

  661stars

  ★ 661 🔴Typesafe database queries via symbolic execution of Java 8 Lambdas (on top of JPA or jOOQ).

  Java·Other·slowing·last year

• cassandre-tech/cassandre-trading-bot on GitHub, opens in a new tab

  658stars

  ★ 659 GPL-3.0 🔴Trading bot framework.

  Java·GNU General Public License v3.0·slowing·last year

• apache/commons-math on GitHub, opens in a new tab

  652stars

  ★ 652 Apache-2.0 🟢Lightweight, self-contained mathematics and statistics components.

  Java·Apache License 2.0·active·2 weeks ago

• Ahoo-Wang/CosId on GitHub, opens in a new tab

  645stars

  ★ 644 Apache-2.0 🟢Universal, flexible, high-performance distributed ID generator.

  Java·Apache License 2.0·active·15 hours ago

• scalecube/scalecube-services on GitHub, opens in a new tab

  639stars

  ★ 639 Apache-2.0 🟢Embeddable Cluster-Membership library based on SWIM and gossip protocol.

  Java·Apache License 2.0·active·last month

• jflex-de/jflex on GitHub, opens in a new tab

  633stars

  ★ 633 🔴Lexical analyzer generator.

  Java·Other·slowing·2 years ago

• membrane/api-gateway on GitHub, opens in a new tab

  632stars

  ★ 632 Apache-2.0 🟢Open-source, reverse-proxy framework.

  Java·Apache License 2.0·active·3 days ago

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

  630stars

  ★ 630 LGPL-2.1 🟢Facilitates processing biological data by providing algorithms, file format parsers, sequencing and 3D visualization commonly used in bioinformatics.

  Java·GNU Lesser General Public License v2.1·active·4 days ago

• easymock/objenesis on GitHub, opens in a new tab

  629stars

  ★ 629 Apache-2.0 🟢Allows dynamic instantiation without default constructor, e.g. constructors which have required arguments, side effects or throw exceptions.

  Java·Apache License 2.0·active·7 days ago

• jhalterman/typetools on GitHub, opens in a new tab

  628stars

  ★ 628 Apache-2.0 🔴Tools for resolving generic types.

  Java·Apache License 2.0·dormant·3 years ago

• j-easy/easy-batch on GitHub, opens in a new tab

  622stars

  ★ 622 MIT 🔴Set up batch jobs with simple processing pipelines. Records are read in sequence from a data source, processed in pipeline and written in batches to a data sink.

  Java·MIT License·dormant·3 years ago

• SAP/SapMachine on GitHub, opens in a new tab

  618stars

  ★ 618 GPL-2.0 🟢SAP's no-cost, rigorously tested and JCK-verified OpenJDK friendly fork.

  Java·GNU General Public License v2.0·active·20 hours ago

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

  617stars

  ★ 617 EPL-2.0 🟢JUnit 5 extension pack, pushing the frontiers on Jupiter.

  Java·Eclipse Public License 2.0·active·last month

• javapathfinder/jpf-core on GitHub, opens in a new tab

  615stars

  ★ 615 🟢JVM formal verification tool containing a model checker and more. Created by NASA.

  Java·active·10 hours ago

• fair-acc/chart-fx on GitHub, opens in a new tab

  612stars

  ★ 612 LGPL-3.0 🟠Scientific charting library with focus on performance optimised real-time data visualisation at 25 Hz update rates for large data sets.

  Java·GNU Lesser General Public License v3.0·steady·5 months ago

• multi-os-engine/multi-os-engine on GitHub, opens in a new tab

  596stars

  ★ 596 Apache-2.0 🟢Open-source, cross-platform engine to develop native mobile (iOS, Android, etc.) apps.

  Java·Apache License 2.0·active·last month

• webauthn4j/webauthn4j on GitHub, opens in a new tab

  585stars

  ★ 585 Apache-2.0 🟢Server-side WebAuthn and passkey verification library.

  Java·Apache License 2.0·active·16 hours ago

• documents4j/documents4j on GitHub, opens in a new tab

  585stars

  ★ 585 Apache-2.0 🟠API for document format conversion using third-party converters such as MS Word.

  Rich Text Format·Apache License 2.0·steady·7 months ago

• Hakky54/ayza on GitHub, opens in a new tab

  579stars

  ★ 579 Apache-2.0 🟢High-level SSL configuration builder for configuring HTTP clients and servers with SSL/TLS.

  Java·Apache License 2.0·active·9 hours ago

• stevensouza/automon on GitHub, opens in a new tab

  571stars

  ★ 571 Apache-2.0 🔴Combines the power of AOP with monitoring and/or logging tools.

  Java·Apache License 2.0·slowing·2 years ago

• apache/commons-pool on GitHub, opens in a new tab

  553stars

  ★ 553 Apache-2.0 🟢Generic object pooling component.

  Java·Apache License 2.0·active·2 weeks ago

• javadev/underscore-java on GitHub, opens in a new tab

  550stars

  ★ 550 MIT 🟢Port of Underscore.js functions.

  Java·MIT License·active·last week