201.opentripplanner / OpenTripPlanner
An open source multi-modal trip planner
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201–300 of 1,226 by Attention Score · May 7, 2026 – Nov 2, 2026 (UTC)
An open source multi-modal trip planner
A p2p, secure file storage, social network and application protocol
循序渐进,学习Spring Boot、Spring Boot & Shiro、Spring Batch、Spring Cloud、Spring Cloud Alibaba、Spring Security & Spring Security OAuth2,博客Spring系列源码:https://mrbird.cc
An extensible multilanguage static code analyzer.
Apache Druid: a high performance real-time analytics database.
MyBatis SQL mapper framework for Java
An API/Schema registry - stores APIs and Schemas.
The official home of the Presto distributed SQL query engine for big data
Apache ZooKeeper
MockServer is an HTTP(S) mock server and proxy for testing that lets you mock APIs, inspect and modify live traffic, and inject failures. It supports HTTP/1.1, HTTP/2, gRPC, WebSockets, TCP and more on a single port, with additional support for HTTP/3, message brokers, and AI/LLM APIs.
🚌 The IK Analysis plugin integrates Lucene IK analyzer into Elasticsearch and OpenSearch, support customized dictionary.
新一代爬虫平台,以图形化方式定义爬虫流程,不写代码即可完成爬虫。
RStudio is an integrated development environment (IDE) for R
OpenPDF is an open-source Java library for creating, editing, rendering, and encrypting PDF documents, as well as generating PDFs from HTML. It is licensed under the LGPL and MPL.
The Standard Webhooks specification
Java implementation of the Tron whitepaper
jOOQ is the best way to write SQL in Java
An image loading and caching library for Android focused on smooth scrolling
Google Reader inspired self-hosted personal RSS reader.
Reformats Java source code to comply with Google Java Style.
Collect, aggregate, and visualize a data ecosystem's metadata
A modern, lambda-friendly, 120 character Java formatter.
Zuul is a gateway service that provides dynamic routing, monitoring, resiliency, security, and more.
Catch common Java mistakes as compile-time errors
Spinnaker is an open source, multi-cloud continuous delivery platform for releasing software changes with high velocity and confidence.
Traditional roguelike game with pixel-art graphics and simple interface
Persistent cluster-friendly scheduler for Java
Capacitor plugin for Instant updates: Ship updates, fixes, changes, and features within minutes
🏗 Build container images for your Java applications.
Tools to work with android .dex and java .class files
🗺️ Minecraft map editor and mod
A comprehensive Domain-Driven Design example with problem space strategic analysis and various tactical patterns.
flink learning blog. http://www.54tianzhisheng.cn/ 含 Flink 入门、概念、原理、实战、性能调优、源码解析等内容。涉及 Flink Connector、Metrics、Library、DataStream API、Table API & SQL 等内容的学习案例,还有 Flink 落地应用的大型项目案例(PVUV、日志存储、百亿数据实时去重、监控告警)分享。欢迎大家支持我的专栏《大数据实时计算引擎 Flink 实战与性能优化》
Welcome to the AWS Code Examples Repository. This repo contains code examples used in the AWS documentation, AWS SDK Developer Guides, and more. For more information, see the Readme.md file below.
A graph database that supports more than 100+ billion data, high performance and scalability (Include OLTP Engine & REST-API & Backends)
Roadmap to becoming a Java developer in 2026
eladmin jpa 版本:项目基于 Spring Boot 2.7.18、 Jpa、 Spring Security、Redis、Vue的前后端分离的后台管理系统,项目采用分模块开发方式, 权限控制采用 RBAC,支持数据字典与数据权限管理,支持一键生成前后端代码,支持动态路由
Your Cheat Sheet For Android Interview - Android Interview Questions and Answers
Apereo CAS - Identity & Single Sign On for all earthlings and beyond.
Apache NetBeans
A Java library for technical analysis.
A Minecraft Mod about Matter, Energy and using them to conquer the world..
This project is deprecated and stale. The latest ExoPlayer code is available in https://github.com/androidx/media
Java 1-25 Parser and Abstract Syntax Tree for Java with advanced analysis functionalities.
JanusGraph: an open-source, distributed graph database
Apache OFBiz is an open source product for the automation of enterprise processes. It includes framework components and business applications for ERP, CRM, E-Business/E-Commerce, Supply Chain Management and Manufacturing Resource Planning. OFBiz provides a foundation and starting point for reliable, secure and scalable enterprise solutions.
The Java gRPC implementation. HTTP/2 based RPC
jsoup: the Java HTML parser, built for HTML editing, cleaning, scraping, and XSS safety.
🔥 HAPI FHIR - Java API for HL7 FHIR Clients and Servers
Pentaho Data Integration ( ETL ) a.k.a Kettle
Compiles Java bytecode to JavaScript, WebAssembly and C
Apache KIE (Knowledge Is Everything) is the home of Drools, OptaPlanner, jBPM, and Kogito.
RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.
APM, (Application Performance Management) tool for large-scale distributed systems.
Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more. In 1 source file so apps can include as source & avoid adding a dependency. Written in Java, usable from Groovy, Kotlin, Scala, etc.
Distributed lock for your scheduled tasks
Allows of newer clients to connect to older server versions for Minecraft servers.
Matrix is a plugin style, non-invasive APM system developed by WeChat.
Zipkin is a distributed tracing system
Most popular Mocking framework for unit tests written in Java
Very spicy additions to the Java programming language.
SpotBugs is FindBugs' successor. A tool for static analysis to look for bugs in Java code.
🌍 The open source route planner api with plenty of features.
🏆 Real-Time no-code, powerful and secure ORM 🚀 providing APIs and Docs without coding by Backend, and Frontend(Client) can customize response JSONs 🏆 实时 零代码、全功能、强安全 ORM 库 🚀 后端接口和文档零代码,前端(客户端) 定制返回 JSON 的数据和结构
Suite of tools for deploying and training deep learning models using the JVM. Highlights include model import for keras, tensorflow, and onnx/pytorch, a modular and tiny c++ library for running math code and a java based math library on top of the core c++ library. Also includes samediff: a pytorch/tensorflow like library for running deep learn...
A better compressed bitset in Java: used by Apache Spark, Netflix Atlas, Apache Pinot, Tablesaw, and many others
Open source IaC Automation and Collaboration Software.
:fire: Android developers should collect the following utils(updating).
Spring源码阅读
Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex distributed systems where failure is inevitable.
Tinker is a hot-fix solution library for Android, it supports dex, library and resources update without reinstall apk.
A tool to help eliminate NullPointerExceptions (NPEs) in your Java code with low build-time overhead
A cluster computing framework for processing large-scale geospatial data
阿里云计算平台DataWorks(https://help.aliyun.com/document_detail/137663.html) 团队出品,为监控而生的数据库连接池
Admin UI for administration of spring boot applications
一款面向泛前端产品研发全生命周期的效率平台。
Micro second messaging that stores everything to disk
Open-source framework for native apps from one Java codebase, with a custom-rendered UI you control across iOS, Android, desktop, web, and watches.
Java version of the Playwright testing and automation library
OpenTelemetry Java SDK
Activiti is a light-weight workflow and Business Process Management (BPM) Platform targeted at business people, developers and system admins. Its core is a super-fast and rock-solid BPMN 2 process engine for Java. It's open-source and distributed under the Apache license. Activiti runs in any Java application, on a server, on a cluster or in the cloud. It integrates perfectly with Spring, it is extremely lightweight and based on simple concepts.
Bastillion gives you a clean, browser-based way to manage SSH access across all your systems—like a bastion host with a friendly dashboard.
快速、简洁、解决大文件内存溢出的java处理Excel工具
Apache Solr open-source search software
🚀 fullstack tutorial 2022,后台技术栈/架构师之路/全栈开发社区,春招/秋招/校招/面试
Hazelcast is a unified real-time data platform combining stream processing with a fast data store, allowing customers to act instantly on data-in-motion for real-time insights.
Simple Binary Encoding (SBE) - High Performance Message Codec
Official Android app for Mastodon
A lightweight, cross-platform file manager with a dual-pane interface
CoreProtect is a blazing fast data logging and anti-griefing tool for Minecraft servers.
Vert.x is a tool-kit for building reactive applications on the JVM
An application observability facade for the most popular observability tools. Think SLF4J, but for observability.
Android Input Method Editor (IME) based on Whisper
Java wrapper for the popular chat & VOIP service: Discord https://discord.com
CoreNLP: A Java suite of core NLP tools for tokenization, sentence segmentation, NER, parsing, coreference, sentiment analysis, etc.
An annotation processor for generating type-safe bean mappers
High Performance data structures and utility methods for Java