Asynchronous, non-blocking HTTP & WebSocket client for the JVM
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🚀 A Complete Fast Android Networking Library that also supports HTTP/2 🚀
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.
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.
Java wrapper for the popular chat & VOIP service: Discord https://discord.com
The official AWS SDK for Java 1.x (In Maintenance Mode, End-of-Life on 12/31/2025). The AWS SDK for Java 2.x is available here: https://github.com/aws/aws-sdk-java-v2/
These are the sample Bounded Contexts from the book "Implementing Domain-Driven Design" by Vaughn Vernon: http://vaughnvernon.co/?page_id=168
Vert.x examples
Eclipse OpenJ9: A Java Virtual Machine for OpenJDK that's optimized for small footprint, fast start-up, and high throughput. Builds on Eclipse OMR (https://github.com/eclipse/omr) and combines with the Extensions for OpenJDK for OpenJ9 repo.
Unirest in Java: Simplified, lightweight HTTP client library.
Simple, high-performance event-driven HTTP client+server for Clojure
An extensible Java library for HTTP request and response logging
Android fillable progress view working with SVG paths. This is a nice option too if you want to create an interesting branding logo for your app. Based on the iOS project: https://github.com/poolqf/FillableLoaders
Lean & powerful HTTP apps
GS Collections has been migrated to the Eclipse Foundation, re-branded as Eclipse Collections. https://www.eclipse.org/collections/
The Standard Webhooks specification
🦎 A lightweight, streaming-native, multi-protocol gateway for AI, APIs, and real-time data. Route LLM requests across providers, govern MCP tools, and connect Kafka, MQTT, and HTTP through one high-performance engine with shared security and observability.
MongoDB object-document mapper in Java based on https://github.com/mongodb/mongo-java-driver
⛔️ DEPRECATED Material Design tap target for Android. https://sjwall.github.io/MaterialTapTargetPrompt/
Google HTTP Client Library for Java
StackGres Operator, Full Stack PostgreSQL on Kubernetes // !! Mirror repository of https://gitlab.com/ongresinc/stackgres, only accept Merge Requests there.
An Extensible Request/Response Workbench
Gerrit Code Review - (mirror of https://gerrit.googlesource.com/gerrit)
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.