ReactiveX / RxJava
RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.
ReactiveX / RxJava
netty / netty
Netty project - an event-driven asynchronous network application framework
redisson / redisson
Redisson: Valkey & Redis Java Client and Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Over 50 Valkey and Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Spring, Tomcat, Scheduler, JCache API, Hibernate, RPC, local cache..
AsyncHttpClient / async-http-client
Asynchronous, non-blocking HTTP & WebSocket client for the JVM
gsantner / markor
Text editor - Notes & ToDo (for Android) - Markdown, todo.txt, plaintext, math, ..
redis / lettuce
Redis Java client
reactor / reactor-core
Non-Blocking Reactive Foundation for the JVM
objectbox / objectbox-java
Database for Android and JVM - first and fast, lightweight on-device vector database
dromara / liteflow
Lightweight, fast, stable, programmable component-based rule engine — where AI Agents orchestrate just like ordinary components. Uniquely designed DSL: component reuse, sync/async & dynamic orchestration, multi-language scripting, nested rules, hot deployment and smooth refresh. If you can orchestrate LiteFlow, you can orchestrate AI.
vert-x3 / vertx-examples
Vert.x examples
researchxxl / syncthing-android
Syncthing-Fork - A Syncthing Wrapper for Android.
lealone / Lealone
能安全适用于氛围编程和企业应用的全栈自进化通用智能体
zeromq / jeromq
JeroMQ is a pure Java implementation of the ZeroMQ messaging library, offering high-performance asynchronous messaging for distributed or concurrent applications.
ctripcorp / x-pipe
X-Pipe是由携程框架部门研发的Redis多数据中心复制管理系统。基于Redis的Master-Slave复制协议，实现低延时、高可用的Redis多数据中心、跨公网数据复制，并且提供一键机房切换，复制监控、异常报警等功能。开源版本和携程内部生产环境版本一致。
microcks / microcks
The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀
YeautyYE / netty-websocket-spring-boot-starter
:rocket: lightweight high-performance WebSocket framework （ 轻量级、高性能的WebSocket框架）
standard-webhooks / standard-webhooks
The Standard Webhooks specification
GrimAnticheat / Grim
Fully async, multithreaded, predictive, open source, 3.01 reach, 1.005 timer, 0.01% speed, 99.99% antikb, "bypassable" 1.8-1.21 minecraft anticheat.
aklivity / zilla
🦎 A lightweight, multi-protocol gateway for event-driven applications and AI agents. Expose and govern Kafka, MQTT, APIs, and MCP through one high-performance engine with shared routing, security, schema, and observability.
wgzhao / Addax
Actively maintained successor to Alibaba DataX — a fast, versatile, open-source ETL tool for 30+ RDBMS and NoSQL data sources.
booklore-app / booklore
BookLore: A self-hosted, multi-user digital library with smart shelves, auto metadata, Kobo & KOReader sync, BookDrop imports, OPDS support, and a built-in reader for EPUB, PDF, and comics.
oldratlee / fucking-java-concurrency
🎏 Simple showcases of java concurrency problems, seeing 🙈 is believing 🐵
aizhimou / pigeon-pod
Listen to YouTube & Bilibili. Anywhere.
agents-flex / agents-flex
Agents-flex is A lightweight Java AI agent development framework (positioned as a counterpart to Spring AI). It supports features such as RAG, MCP, Skills, Text2SQL , LLM Wiki, Sub-agents, Web Search, TTS (synchronous and streaming), and STT.
86dbs / dbsyncer
DBSyncer（简称dbs）是一款开源的数据同步中间件，提供MySQL、Oracle、SqlServer、PostgreSQL、Elasticsearch(ES)、Kafka、File、SQL等同步场景。支持上传插件自定义同步转换业务，提供监控全量和增量数据统计图、应用性能预警等。
smallrye / smallrye-mutiny
An Intuitive Event-Driven Reactive Programming Library for Java
eclipse-vertx / vertx-sql-client
High performance reactive SQL client written in Java
jumpmindinc / symmetric-ds
SymmetricDS is database replication and file synchronization software that is platform independent, web enabled, and database agnostic. It is designed to make bi-directional data replication fast, easy, and resilient. It scales to a large number of nodes and works in near real-time across WAN and LAN networks.
IntellectualSites / FastAsyncWorldEdit
Blazingly fast world manipulation for artists, builders and everyone else.
mguessan / davmail
DavMail POP/IMAP/SMTP/CalDAV/CardDAV/LDAP Exchange and Office 365 Gateway - Synced with main subversion repository at
moneymanagerex / android-money-manager-ex
Local-first personal finance app. Encrypted, self-hosted, sync across devices.
Ahoo-Wang / CosId
Universal, flexible, high-performance distributed ID generator. | 通用、灵活、高性能的分布式 ID 生成器
Hakky54 / mutual-tls-ssl
🔐 Tutorial of setting up Security for your API with one way authentication with TLS/SSL and mutual authentication for a java based web server and a client with both Spring Boot. Different clients are provided such as Apache HttpClient, OkHttp, Spring RestTemplate, Spring WebFlux WebClient Jetty and Netty, the old and the new JDK HttpClient, the old and the new Jersey Client, Google HttpClient, Unirest, Retrofit, Feign, Methanol, vertx, Scala client Finagle, Featherbed, Dispatch Reboot, AsyncHttpClient, Sttp, Akka, Requests Scala, Http4s Blaze, Kotlin client Fuel, http4k, Kohttp and ktor. Also other server examples are available such as jersey with grizzly. Also gRPC, WebSocket and ElasticSearch examples are included
Cloeille / picsou-finance
Self-hosted personal finance dashboard Track bank accounts, brokerage, crypto, and net worth — all in one place.
xm486 / YukiHub
YukiHub is a Galgame management tool for Android that supports synchronization of local games, shortcuts, and play records. The project uses the GPL-3.0 open-source license.
PortSwigger / http-terminator
HTTP Desync research factory.
KirstenAli / nitromap
A zero-dependency embedded Java record store that adds asynchronous persistence, SQL-like querying, and shared-nothing clustering to the familiar ConcurrentHashMap API.
hu847266h / scene-unlock-toolkit
Scene (N1 Alpha8) activation-chain research: LSPosed module (legacy stubs, verdict rewrite) + scene-daemon runtime hot-patch (ptrace icache sync). MIUI + KernelSU.
Baggio94 / SleepSync
Pause Syncthing-Fork when your Android device sleeps and automatically resume it when the screen wakes.