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Good First Issue curates easy pickings from popular open-source projects, and helps you make your first contribution to open-source.

A DLNA, UPnP and HTTP(S) Media Server.
lang: Java
stars: 1.25K
last activity: 5 hours ago
Sable / soot
Soot - A Java optimization framework
lang: Java
stars: 1.68K
last activity: a day ago
ccrama / Slide
Slide is an open sourced, ad free Reddit browser for Android
lang: Java
stars: 1.39K
last activity: 19 hours ago
The Data Transfer Project makes it easy for people to transfer their data between online service providers. We are establishing a common framework, including data models and protocols, to enable direct transfer of data both into and out of participating online service providers.
lang: Java
stars: 3.02K
last activity: 12 hours ago
OpenRefine is a free, open source power tool for working with messy data and improving it
lang: Java
stars: 7.8K
last activity: 16 hours ago
SVG library for React Native, React Native Web, and plain React web projects.
lang: Java
stars: 5.11K
last activity: 10 hours ago
Material design file manager for Android
lang: Java
stars: 3.15K
last activity: a day ago
seata / seata
🔥 Seata is an easy-to-use, high-performance, open source distributed transaction solution.
lang: Java
stars: 18.44K
last activity: a day ago
A decentralized bitcoin exchange network
lang: Java
stars: 3.34K
last activity: 12 hours ago
OWASP VulnerableApp Project: For Security Enthusiasts by Security Enthusiasts.
lang: Java
stars: 38
last activity: 18 days ago
Java Bindings for V8
lang: Java
stars: 1.88K
last activity: a day ago
📱 Nextcloud Android app
lang: Java
stars: 2.2K
last activity: 5 hours ago
an easy-to-use dynamic service discovery, configuration and service management platform for building cloud native applications.
lang: Java
stars: 15.98K
last activity: 29 minutes ago
Free universal database tool and SQL client
lang: Java
stars: 17.72K
last activity: 40 minutes ago
Cruise-control is the first of its kind to fully automate the dynamic workload rebalance and self-healing of a Kafka cluster. It provides great value to Kafka users by simplifying the operation of Kafka clusters.
lang: Java
stars: 1.72K
last activity: a day ago
The SpotBugs plugin for security audits of Java web applications and Android applications. (Also work with Kotlin, Groovy and Scala projects)
lang: Java
stars: 1.54K
last activity: 3 days ago
Strongbox is an artifact repository manager.
lang: Java
stars: 382
last activity: 8 days ago
An Android library for managing images and the memory they use.
lang: Java
stars: 16.46K
last activity: 4 hours ago
Apache Dubbo is a high-performance, java based, open source RPC framework.
lang: Java
stars: 34.48K
last activity: 17 hours ago
Free and open source log management
lang: Java
stars: 5.58K
last activity: 19 hours ago
eclipse / che
The Kubernetes-Native IDE for Developer Teams
lang: Java
stars: 6.35K
last activity: 16 hours ago
SpotBugs is FindBugs' successor. A tool for static analysis to look for bugs in Java code.
lang: Java
stars: 2.15K
last activity: 6 hours ago
A podcast manager for Android
lang: Java
stars: 3.33K
last activity: 8 hours ago
Open source routing engine for OpenStreetMap. Use it as Java library or server.
lang: Java
stars: 3.03K
last activity: 20 hours ago
Terasology - open source voxel world
lang: Java
stars: 2.98K
last activity: a day ago
Open Source, Distributed, RESTful Search Engine
lang: Java
stars: 53.18K
last activity: 4 hours ago
a fast, scalable, multi-language and extensible build system
lang: Java
stars: 16.07K
last activity: 2 hours ago
Social share, sending simple data to other apps.
lang: Java
stars: 2.64K
last activity: a day ago
React Native Contacts
lang: Java
stars: 1.35K
last activity: 10 hours ago
A libre lightweight streaming front-end for Android.
lang: Java
stars: 12.28K
last activity: 35 minutes ago
OpenGrok is a fast and usable source code search and cross reference engine, written in Java
lang: Java
stars: 3.17K
last activity: 13 hours ago
Build cross-platform Native Progressive Web Apps for iOS, Android, and the Web ⚡️
lang: Java
stars: 4.99K
last activity: an hour ago
Distributed Workflow Engine for Microservices Orchestration
lang: Java
stars: 1.69K
last activity: 21 hours ago
📲cim(cross IM) 适用于开发者的分布式即时通讯系统
lang: Java
stars: 7.3K
last activity: 3 hours ago
Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
lang: Java
stars: 4.5K
last activity: 3 hours ago
Kafka GUI for Apache Kafka to manage topics, topics data, consumers group, schema registry, connect and more...
lang: Java
stars: 1.72K
last activity: 11 hours ago
Vespa is an engine for low-latency computation over large data sets.
lang: Java
stars: 3.41K
last activity: 9 hours ago
crate / crate
CrateDB is a distributed SQL database that makes it simple to store and analyze massive amounts of machine data in real-time.
lang: Java
stars: 2.9K
last activity: 16 hours ago
Open Source In-Memory Data Grid
lang: Java
stars: 4.15K
last activity: 13 hours ago
Eclipse Collections is a collections framework for Java with optimized data structures and a rich, functional and fluent API.
lang: Java
stars: 1.62K
last activity: 19 hours ago
Your go-to microservice framework for any situation, from the creator of Netty et al. You can build any type of microservice leveraging your favorite technologies, including gRPC, Thrift, Kotlin, Retrofit, Reactive Streams, Spring Boot and Dropwizard.
lang: Java
stars: 2.91K
last activity: 16 hours ago
JabRef / jabref
Graphical Java application for managing BibTeX and biblatex (.bib) databases
lang: Java
stars: 2K
last activity: 4 hours ago
The OWASP ZAP core project
lang: Java
stars: 8.12K
last activity: 11 hours ago
A powerful flow control component enabling reliability, resilience and monitoring for microservices. (面向云原生微服务的高可用流控防护组件)
lang: Java
stars: 15.08K
last activity: 2 hours ago
Quarkus: Supersonic Subatomic Java.
lang: Java
stars: 6.74K
last activity: an hour ago
APM, Application Performance Monitoring System
lang: Java
stars: 15.85K
last activity: an hour ago
lang: Java
stars: 1
last activity: a month ago
pmd / pmd
An extensible multilanguage static code analyzer.
lang: Java
stars: 3.22K
last activity: 19 hours ago
Allure Framework is a flexible lightweight multi-language test reporting tool. It provides clear graphical reports and allows everyone involved in the development process extract maximum of information from everyday testing process.
lang: Java
stars: 2.1K
last activity: 18 hours ago