platform: jvm
3641 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| rukamori/ArchiveTune ArchiveTune is a free, open-source Android music player built with Kotlin and Jetpack Compose that plays both local files and streams from … | 83 | 5244 | active |
| microsoft/SynapseML SynapseML (formerly MMLSpark) is an open-source machine learning library built on Apache Spark that provides simple, composable, distribute… | 88 | 5240 | active |
| killme2008/aviatorscript AviatorScript is a high-performance, lightweight scripting language that runs on the JVM (including Android). It compiles scripts to JVM by… | 84 | 5240 | stable |
| reactor/reactor-core Reactor Core is a non-blocking reactive streams foundation library for the JVM, implementing a Reactive Extensions-inspired API with the Fl… | 99 | 5234 | stable |
| aasm/aasm AASM is a Ruby library for adding finite state machines to Ruby classes, with adapters for ActiveRecord, Mongoid, NoBrainer, Dynamoid, Sequ… | 73 | 5230 | stable |
| bitcoinj/bitcoinj bitcoinj is a Java library for working with the Bitcoin protocol, supporting wallet management, sending and receiving transactions via SPV … | 89 | 5228 | active |
| gz-yami/mall4j Mall4j is an open-source Java e-commerce mall system built on Spring Boot 4, Vue3, Sa-Token, MyBatis-Plus, and Redis, providing product, or… | 80 | 5220 | active |
| Asciidoctor Asciidoctor is a fast, open source Ruby-based text processor and publishing toolchain that parses AsciiDoc content into a document model an… | 81 | 5208 | stable |
| baomidou/dynamic-datasource A Spring Boot starter that enables rapid integration of multiple, dynamically switchable data sources in Java applications. It supports dat… | 67 | 5184 | active |
| apache/calcite Apache Calcite is a dynamic data management framework for the JVM that supplies the building blocks of a database—an industry-standard SQL … | 77 | 5175 | stable |
| zhkl0228/unidbg A Java-based framework that emulates Android (and experimentally iOS) native libraries on non-ARM hosts, including JNI, syscalls, and ARM32… | 79 | 5165 | active |
| Sayi/poi-tl poi-tl is a Word (docx) template engine for Java built on Apache POI, generating new documents from Word templates and data. It is a logic-… | 66 | 5140 | active |
| line/armeria Armeria is a JVM microservice framework built on Netty that lets you serve gRPC, Thrift, REST, and static files on a single port. It provid… | 98 | 5133 | stable |
| bisq-network/bisq Bisq is an open-source desktop application and peer-to-peer network for exchanging bitcoin for national currencies and other cryptocurrenci… | 99 | 5128 | stable |
| grobidOrg/grobid GROBID is a Java machine learning library that extracts, parses, and re-structures raw documents such as PDFs into structured XML/TEI, focu… | 87 | 5105 | active |
| angryip/ipscan Angry IP Scanner is a fast, open-source IP address and port scanner with a friendly GUI built on Eclipse SWT. It scans networks for hosts, … | 75 | 5091 | active |
| apache/ignite Apache Ignite is a distributed, memory-first database with in-memory speed, ACID transactions, and SQL support across a cluster. It can ser… | 77 | 5079 | stable |
| sofastack/sofa-boot SOFABoot is an open-source Java framework built on top of Spring Boot, fully compatible with it, that adds production-grade enhancements su… | 68 | 5071 | active |
| didi/booster Booster is a lightweight, extensible quality optimization toolkit for mobile applications built as a Gradle plugin. It uses bytecode manipu… | 66 | 5070 | active |
| jankotek/mapdb MapDB is an embedded Java database engine that provides concurrent Maps, Sets, Lists and Queues backed by disk storage or off-heap memory. … | 75 | 5049 | stable |
| tencentmusic/supersonic SuperSonic is an AI+BI platform that combines Chat BI (natural language querying powered by LLMs) with Headless BI (a governed semantic lay… | 64 | 5030 | active |
| youlookwhat/CloudReader CloudReader is an open-source Android reading client with a Netease Cloud Music-inspired UI, built with MVVM-DataBinding architecture using… | 62 | 5012 | active |
| querydsl/querydsl Querydsl is a Java framework for constructing type-safe SQL-like queries via a fluent API across multiple backends such as JPA, SQL, MongoD… | 61 | 4968 | stable |
| mock-server/mockserver-monorepo MockServer is an open-source HTTP(S) mock server and proxy for testing that can mock APIs, record and inspect live traffic, and inject fail… | 99 | 4953 | active |
| sbt/sbt sbt is the interactive build tool for Scala and Java projects, using a Scala-based DSL (build.sbt) to define parallel task graphs. It provi… | 99 | 4940 | active |
| muzei/muzei Muzei is an Android live wallpaper app that refreshes your home screen daily with famous works of art or your own photos, blurring and dimm… | 67 | 4940 | active |
| oracle/opengrok OpenGrok is a fast source code search and cross-reference engine written in Java that indexes source trees and version control histories. I… | 99 | 4922 | stable |
| spring-cloud/spring-cloud-gateway Spring Cloud Gateway is an API gateway built on Spring Framework, Spring Boot, and Project Reactor. It provides routing, filtering, and tra… | 99 | 4904 | stable |
| mozilla/uniffi-rs UniFFI is a Rust toolkit that generates foreign-language bindings for Rust code, letting you write core logic once and call it from Kotlin,… | 77 | 4896 | active |
| crimera/piko Piko is a collection of Morphe patches that modify the Twitter/X and Instagram Android apps to add features like ad blocking, download capa… | 91 | 4894 | active |
| micrometer-metrics/micrometer Micrometer is a vendor-neutral application observability facade for the JVM that provides a unified API for instrumenting code with dimensi… | 99 | 4885 | stable |
| reactive-streams/reactive-streams-jvm The Reactive Streams specification for the JVM, defining a minimal set of interfaces (Publisher, Subscriber, Subscription, Processor) for a… | 32 | 4879 | stable |
| AlmasB/FXGL FXGL is a Java/JavaFX/Kotlin game development framework (engine) built on top of JavaFX, offering a high-level entity-component API for 2D … | 73 | 4852 | active |
| Aliucord/Aliucord Aliucord is a rootless modification of the legacy Discord Android app that adds a plugin system with 280+ plugins, 250+ custom themes, an i… | 67 | 4851 | active |
| cdk8s-team/cdk8s cdk8s is an open-source software development framework for defining Kubernetes applications and reusable abstractions using familiar progra… | 67 | 4851 | active |
| agrosner/DBFlow DBFlow is a Kotlin Multiplatform ORM for SQLite that uses annotations and a compiler plugin to generate database adapters and a typed query… | 67 | 4847 | active |
| deepjavalibrary/djl Deep Java Library (DJL) is an engine-agnostic, high-level deep learning framework for Java that supports backends like PyTorch, TensorFlow,… | 80 | 4842 | active |
| prawnpdf/prawn Prawn is a pure Ruby library for programmatically generating PDF documents, offering vector drawing, text rendering, image embedding, and e… | 58 | 4820 | stable |
| duckduckgo/Android The official DuckDuckGo Android app, a privacy-focused mobile browser and search client written in Kotlin. It blocks trackers, enforces enc… | 95 | 4802 | active |
| dromara/dynamic-tp DynamicTp is a lightweight Java framework for managing dynamically configurable, monitored thread pools based on configuration centers like… | 74 | 4800 | active |
| kotest/kotest Kotest is a comprehensive, multiplatform testing framework for Kotlin offering a flexible test DSL, over 350 assertion matchers, and integr… | 98 | 4787 | active |
| chipsalliance/chisel Chisel is an open-source hardware description language (HDL) embedded in Scala for describing digital electronics at the register-transfer … | 98 | 4763 | stable |
| Querz/mcaselector MCA Selector is a desktop GUI application for selecting, deleting, and exporting chunks and regions from Minecraft Java Edition world saves… | 89 | 4753 | active |
| zlt2000/microservices-platform An enterprise-grade, front-end/back-end separated microservices platform built on Spring Boot 3.x, Spring Cloud, and Spring Cloud Alibaba. … | 31 | 4749 | active |
| 981011512/-- An open-source smart parking management system with EV charging, property management, and face access control modules, built on Java Spring… | 40 | 4714 | active |
| scala-js/scala-js Scala.js is a compiler that translates Scala code into efficient JavaScript, letting developers write type-safe applications for browsers, … | 91 | 4710 | stable |
| 201206030/novel-plus novel-plus is a full-featured novel/fiction CMS built on Spring Boot, comprising a reader-facing portal, author backend, admin dashboard, a… | 88 | 4709 | active |
| bytedeco/javacpp JavaCPP is a Java library that provides efficient access to native C++ from Java via JNI, bridging the two languages by exploiting their sy… | 86 | 4705 | stable |
| scala-native/scala-native Scala Native is an optimizing ahead-of-time compiler and lightweight managed runtime that compiles Scala code to native machine code via LL… | 85 | 4685 | active |
| SPLWare/esProc esProc SPL is a JVM-based scripting language for structured data computation, usable as a standalone data analysis tool or embedded computi… | 77 | 4684 | active |
| discord-jda/JDA JDA (Java Discord API) is a Java library for building Discord bots, wrapping Discord's real-time WebSocket gateway and REST API behind an e… | 97 | 4681 | active |
| rememberber/WePush WePush is a focused bulk message-pushing tool supporting WeChat template/customer messages, SMS providers (Alibaba, Tencent, Huawei, Baidu,… | 99 | 4676 | active |
| scalaz/scalaz Scalaz is a Scala library for principled functional programming, providing purely functional data structures and foundational type classes … | 77 | 4673 | stable |
| izhangzhihao/intellij-rainbow-brackets An IntelliJ platform plugin that colorizes matching brackets, parentheses, and indent guidelines in rainbow colors to improve code readabil… | 61 | 4662 | active |
| Heeexy/SpringBoot-Shiro-Vue A full-stack reference project demonstrating fine-grained RBAC permission management using Spring Boot on the backend and Vue with ElementU… | 69 | 4656 | active |
| zongzibinbin/MallChat MallChat is a Java backend for an e-commerce system that combines shopping features (cart, orders, payments, search, recommendations, logis… | 30 | 4654 | active |
| JabRef/jabref JabRef is an open-source, cross-platform desktop application for managing BibTeX and BibLaTeX (.bib) reference libraries. It helps research… | 86 | 4648 | active |
| kittinunf/fuel Fuel is a Kotlin-first HTTP networking library built on Kotlinx Coroutines, offering a fluent API for GET/POST/PUT/DELETE/HEAD/PATCH reques… | 66 | 4647 | active |
| chewiebug/GCViewer GCViewer is a Java-based tool that visualizes and summarizes verbose garbage collection logs from Sun/Oracle, IBM, HP, and BEA JVMs, includ… | 78 | 4645 | active |
| ObjectBox ObjectBox is a fast, lightweight embedded NoSQL object database with built-in on-device vector search, available for Java/Kotlin (Android/J… | 88 | 4622 | active |
| h2database/h2database H2 is an embeddable relational database management system written entirely in Java, usable in embedded, server, or in-memory modes via a JD… | 70 | 4622 | stable |
| mozilla/rhino Rhino is an open-source implementation of JavaScript written entirely in Java, maintained by Mozilla. It is typically embedded into Java ap… | 89 | 4620 | active |
| FCL-Team/FoldCraftLauncher Fold Craft Launcher is an open-source Android launcher for Minecraft: Java Edition, built on HMCL core functionality and the PojavLauncher … | 95 | 4613 | active |
| jacoco/jacoco JaCoCo is a free Java code coverage library that measures and reports code coverage via bytecode instrumentation through a Java agent, with… | 84 | 4601 | stable |
| apache/rocketmq-externals The Apache RocketMQ externals repository is the community home for incubating ecosystem projects around the RocketMQ message broker, such a… | 71 | 4601 | active |
| activemerchant/active_merchant Active Merchant is a Ruby payment abstraction library extracted from Shopify that provides a unified API across dozens of payment gateways.… | 45 | 4600 | stable |
| osfans/trime Trime (Tongwen Input Method) is an Android input method editor (IME) built on the open-source RIME input method framework via JNI. It suppo… | 92 | 4599 | active |
| polynote/polynote Polynote is a polyglot notebook environment supporting Scala, Python (with or without Spark), SQL, and Vega in a single notebook with seaml… | 68 | 4599 | active |
| IRS-Public/direct-file Direct File is the IRS's free, interview-based service for taxpayers to electronically file federal tax returns directly with the IRS. The … | 58 | 4585 | active |
| xiaoymin/knife4j Knife4j is an all-in-one enhancement solution for Swagger2 (OpenAPI2) and OpenAPI3 in the Java/Spring ecosystem, providing an improved API … | 52 | 4577 | active |
| ChuckerTeam/chucker Chucker is an Android library that acts as an OkHttp interceptor to inspect HTTP(S) requests and responses made by an Android app, persisti… | 79 | 4555 | active |
| torakiki/pdfsam PDFsam Basic is a free, open-source desktop application for splitting, merging, rotating, mixing and extracting pages from PDF files. It is… | 93 | 4551 | active |
| jishenghua/jshERP jshERP (管伊佳ERP) is an open-source ERP application for small and medium businesses, built on SpringBoot with a Vue frontend, focusing on pur… | 67 | 4537 | active |
| JetBrains/koog Koog is a JetBrains-built Kotlin/Java framework for creating fault-tolerant, enterprise-ready AI agents on the JVM, with multiplatform depl… | 84 | 4536 | active |
| apache/fory Apache Fory is a blazingly fast multi-language serialization framework supporting idiomatic domain objects, a reference-aware schema IDL, a… | 96 | 4515 | active |
| ReactiveX/RxAndroid RxAndroid provides Android-specific bindings for RxJava 3, adding the minimal classes needed to write reactive components in Android apps. … | 66 | 19932 | maintenance |
| jing332/tts-server-android An Android system-wide text-to-speech (TTS) app that provides a TTS engine service with built-in Microsoft demo API support, custom HTTP TT… | 40 | 4483 | active |
| Creators-of-Create/Create Create is a NeoForge mod for Minecraft that adds building tools, decoration blocks, and aesthetic automation technology. It emphasizes play… | 92 | 4471 | active |
| BeichenDream/Godzilla Godzilla is a Java-based webshell management tool supporting dynamic payloads for JSP, ASPX, and PHP targets with multiple AES/XOR encrypto… | 23 | 4455 | active |
| apache/shiro Apache Shiro is a comprehensive Java security framework providing authentication, authorization, cryptography, and enterprise session manag… | 95 | 4451 | active |
| dreamhead/moco Moco is an easy-setup stub framework for the JVM that spins up mock HTTP, REST, WebSocket, and SSE servers from simple JSON configuration f… | 73 | 4445 | active |
| geoserver/geoserver GeoServer is an open-source Java server for sharing, publishing, and editing geospatial data using OGC open standards. It is the reference … | 99 | 4442 | stable |
| afollestad/material-dialogs A beautiful, fluid, and extensible dialogs API for Kotlin and Android, built on Material Design. It provides a core module plus extensions … | 10 | 19555 | maintenance |
| square/wire Wire is Square's protocol buffer (protobuf) library with gRPC support for Kotlin, Java, Swift, and Android. It generates lightweight, idiom… | 77 | 4428 | active |
| crate/crate CrateDB is a distributed, horizontally scalable SQL database built on Lucene, designed for real-time analytics on massive datasets. It supp… | 95 | 4427 | active |
| Snailclimb/guide-rpc-framework A custom Java RPC framework built on Netty, Kryo (plus Protostuff/Hessian), and Zookeeper, with detailed tutorials explaining its implement… | 75 | 4421 | active |
| mikepenz/AboutLibraries AboutLibraries is a Kotlin Multiplatform library and Gradle plugin that automatically collects all dependencies and their licenses of a Gra… | 99 | 4415 | active |
| airbnb/DeepLinkDispatch DeepLinkDispatch is an annotation-based Android library for declarative deep link handling. Activities are annotated with @DeepLink and URI… | 79 | 4413 | stable |
| zio/zio ZIO is a zero-dependency Scala library for type-safe, composable asynchronous and concurrent programming, built on lightweight fibers. It p… | 89 | 4410 | stable |
| FASTJSON Fast is a high-performance Java JSON library for converting Java objects to JSON and back, working with arbitrary Java objects including pr… | 94 | 4397 | stable |
| embabel/embabel-agent Embabel Agent is an agentic AI framework for the JVM, written in Kotlin with first-class Java and Spring Boot support. It provides typed, g… | 86 | 4386 | active |
| eirslett/frontend-maven-plugin A Maven plugin that downloads and installs Node.js and NPM (or Yarn) locally per project, then runs npm install and frontend build tools li… | 75 | 4382 | stable |
| LibrePDF/OpenPDF OpenPDF is an open-source Java library (LGPL/MPL licensed, forked from iText 4) for creating, editing, rendering, and encrypting PDF docume… | 93 | 4359 | active |
| jay3-yy/BiliPai BiliPai is a native third-party Bilibili Android client built with Kotlin and Jetpack Compose, covering videos, anime, live streams, feeds,… | 78 | 4351 | active |
| microsoft/RulesEngine A Microsoft-maintained .NET library for abstracting business rules and policies out of application code into externally stored, JSON-define… | 70 | 4341 | active |
| PaperMC/Folia Folia is a fork of the Paper Minecraft server that adds regionised multithreading, splitting the world into independent regions each with i… | 75 | 4338 | active |
| apache/streampark Apache StreamPark is a streaming application development framework and one-stop cloud-native real-time computing platform for Apache Flink … | 73 | 4328 | stable |
| freeplane/freeplane Freeplane is a free, open-source desktop application for mind mapping, knowledge management, and project management, written in Java with S… | 97 | 4321 | stable |
| dragonwell-project/dragonwell8 Alibaba Dragonwell8 is a downstream, production-hardened distribution of OpenJDK 8 (LTS) optimized for large-scale online e-commerce, finan… | 93 | 4317 | active |
| failsafe-lib/failsafe Failsafe is a lightweight, zero-dependency Java library for fault tolerance, wrapping executable logic with composable resilience policies … | 59 | 4309 | active |