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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.
Cyberduck is a libre FTP, SFTP, WebDAV, Amazon S3, Backblaze B2, Microsoft Azure & OneDrive and OpenStack Swift file transfer client for Mac and Windows.
A complete 3-D game development suite written in Java.
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/
Terasology - open source voxel world
Library for OpenAPI 3 with spring-boot
Vert.x examples
An Android Bluetooth Low Energy (BLE) Library with RxJava3 interface
LeafPic is a fluid, material-designed alternative gallery, it also is ad-free and open source under GPLv3 license. It doesn't miss any of the main features of a stock gallery, and we also have plans to add more useful features.
A material style progress wheel compatible with 2.3
Android OpenGL ES 2.0/3.0 Engine
An Android Dialog Lib simplify customization.
The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀
JLine is a Java library for handling console input.
Real-Time Strategy game 3D engine coded in pure java
MinIO Client SDK for Java
Java language binding for writing Appium Tests, conforms to W3C WebDriver Protocol
HiveMQ CE is a Java-based open source MQTT broker that fully supports MQTT 3.x and MQTT 5. It is the foundation of the HiveMQ Enterprise Connectivity and Messaging Platform
ArcAnimator helps to create arc transition animation: 2.3.+
HTTP web applications for Vert.x
HiveMQ MQTT Client is an MQTT 5.0 and MQTT 3.1.1 compatible and feature-rich high-performance Java client library with different API flavours and backpressure support
Floating hint from edit text - inspired by Matt D. Smith's design: http://dribbble.com/shots/1254439--GIF-Mobile-Form-Interaction?list=users
A Fast Scroller for the RecyclerView world!
Utility for comparing two OpenAPI specifications.