Open Source Java Software - Page 63
Sort By:
Java Software
Browse free open source Java Software and projects below. Use the toggles on the left to filter open source Java Software by OS, license, language, programming language, and project status.
-
AI-generated apps that pass security reviewRetool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
-
Full-stack observability with actually useful AI | Grafana CloudBuilt on open standards like Prometheus and OpenTelemetry, Grafana Cloud includes Kubernetes Monitoring, Application Observability, Incident Response, plus the AI-powered Grafana Assistant. Get started with our generous free tier today.
-
1
Spring Data R2DBC
Provide support to increase developer productivity in Java
Provide support to increase developer productivity in Java when using Reactive Relational Database Connectivity. Uses familiar Spring concepts such as a DatabaseClient for core API usage and lightweight repository-style data access. The primary goal of the Spring Data project is to make it easier to build Spring-powered applications that use new data access technologies such as non-relational databases, map-reduce frameworks, and cloud-based data services. Spring Data JDBC, part of the larger Spring Data family, makes it easy to implement JDBC-based repositories. This module deals with enhanced support for JDBC-based data access layers. It makes it easier to build Spring-powered applications that use data access technologies.It aims at being conceptually easy. In order to achieve this it does NOT offer caching, lazy loading, write-behind or many other features of JPA. This makes Spring Data JDBC a simple, limited, opinionated ORM. -
2
Spring Data REST
Simplifies building hypermedia-driven REST web services
Spring Data REST is part of the umbrella Spring Data project and makes it easy to build hypermedia-driven REST web services on top of Spring Data repositories. Spring Data REST builds on top of Spring Data repositories, analyzes your application’s domain model and exposes hypermedia-driven HTTP resources for aggregates contained in the model. Exposes a discoverable REST API for your domain model using HAL as media type. Exposes collection, item and association resources representing your model. Supports pagination via navigational links. Allows to dynamically filter collection resources. Exposes dedicated search resources for query methods defined in your repositories. Allows to hook into the handling of REST requests by handling Spring ApplicationEvents. Exposes metadata about the model discovered as ALPS and JSON Schema. Allows to define client specific representations through projections. Ships a customized variant of the HAL Explorer to leverage the exposed metadata. -
3
Spring boot starter for gRPC framework
Spring Boot starter module for gRPC framework
Autoconfigures and runs the embedded gRPC server with @GRpcService-enabled beans as part of the spring-boot application. If you are using Spring Boot Dependency Management plugin, it might pull not the same version as the version this started was compiled against, causing binary incompatibility issue. -
4
Stampede
The ToroDB solution to provide better analytics on top of MongoDB
Stampede is a high-performance cache stampede prevention library designed to mitigate excessive cache misses in distributed caching systems. It helps avoid the "thundering herd" problem, where multiple requests simultaneously trigger expensive computations when a cache entry expires. Stampede manages cache expiration intelligently, ensuring that only one request regenerates a missing cache entry while others wait for the updated value. -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
-
5
Stetho
Debug bridge for Android applications
Stetho is a sophisticated debug bridge for Android applications. When enabled, developers have access to the Chrome Developer Tools feature natively part of the Chrome desktop browser. Developers can also choose to enable the optional dumpapp tool which offers a powerful command-line interface to application internals. Alternatively you can include Stetho from Maven Central via Gradle or Maven. Only the main stetho dependency is strictly required, however you may also wish to use one of the network helpers. The integration with the Chrome DevTools frontend is implemented using a client/server protocol which the Stetho software provides for your application. Once your application is integrated, simply navigate to chrome://inspect and click “Inspect” to get started! Network inspection is possible with the full spectrum of Chrome Developer Tools features, including image preview, JSON response helpers, and even exporting traces to the HAR format. -
6
TEAMMATES Developer Web Site
This is the project website for the TEAMMATES feedback management tool
TEAMMATES is a free online tool for managing peer evaluations and other feedback paths of your students. It is provided as a cloud-based service for educators/students and is currently used by hundreds of universities across the world. -
7
TableView for Android
Powerful Android library for displaying complex data structures
TableView is a powerful Android library for displaying complex data structures and rendering tabular data composed of rows, columns and cells. TableView relies on a separate model object to hold and represent the data it displays. This repository also contains a sample app that is designed to show you how to create your own TableView in your application. -
8
Talon for Twitter
The Holo version of my popular Android Talon for Twitter app
This is the complete version of the Twitter client that I created for Android. It is 100% open source, the only thing that you will have to do plug in is your own API keys. Feel free to use this as a resource for those kinds of thing, that's one of the reasons I wanted to open source it in the first place. Lots to learn from a big project like this, and I think that is pretty important with the ever changing world of Android. -
9
Teedy
Lightweight document management system
Teedy is a lightweight document management system packed with all the features you can expect from big expensive solutions but still easy to use. A modern interface to keep your important documents in one place and your business operations clear. Do not spend time using the tool, just upload your documents and you will find them easily when needed. Precise user permissions, encryption and datacenters in France will make sure only the right people can see the right documents. As a content-oriented document management system, the user interface is not cluttered with buttons and menus and works both on desktop and mobile. Document searching has never been easier thanks to the powerful full-text search engine in Teddy. You can search in images (embedded OCR), DOCX, ODT, TXT, PDF, and more. Verify or validate your documents with people of your organization using workflows. -
Gemini 3 and 200+ AI Models on One PlatformBuild generative AI apps with Vertex AI. Switch between models without switching platforms.
-
10
Toaster Frame
Android toast frame, dedicated to treating various difficult problems
Toaster is a lightweight Android utility library that enhances and standardizes toast message behavior across different devices and OS versions. The project addresses inconsistencies in native Android toast implementations by providing a more reliable and customizable messaging experience. It focuses on ensuring that toast notifications display correctly even on heavily customized Android skins. The library is designed for easy integration, allowing developers to replace default toast usage with minimal code changes. It also supports styling and positioning improvements that make transient user feedback more predictable. In practice, Toaster is useful for Android teams that want consistent UI feedback without building a custom notification system from scratch. -
11
TorchServe
Serve, optimize and scale PyTorch models in production
TorchServe is a performant, flexible and easy-to-use tool for serving PyTorch eager mode and torschripted models. Multi-model management with the optimized worker to model allocation. REST and gRPC support for batched inference. Export your model for optimized inference. Torchscript out of the box, ORT, IPEX, TensorRT, FasterTransformer. Performance Guide: built-in support to optimize, benchmark and profile PyTorch and TorchServe performance. Expressive handlers: An expressive handler architecture that makes it trivial to support inferencing for your use case with many supported out of the box. Out-of-box support for system-level metrics with Prometheus exports, custom metrics and PyTorch profiler support. -
12
Tribuo
Tribuo - A Java machine learning library
Tribuo* is a machine learning library written in Java. It provides tools for classification, regression, clustering, model development, and more. It provides a unified interface to many popular third-party ML libraries like xgboost and liblinear. With interfaces to native code, Tribuo also makes it possible to deploy models trained by Python libraries (e.g. scikit-learn, and pytorch) in a Java program. Tribuo is licensed under Apache 2.0. Remove the uncertainty around exactly which artifacts you're using in production. Tribuo's Models, Datasets, and Evaluations have provenance, meaning they know exactly what parameters, transformations, and files were used to create them. Provenance data allows each model to be rebuilt verbatim from scratch and for evaluations to track the models and datasets used for each experiment. -
13
Truth
Fluent assertions for Java and Android
Truth is a library for performing assertions in tests. Truth makes your test assertions and failure messages more readable. Similar to AssertJ, it natively supports many JDK and Guava types, and it is extensible to others. Truth is owned and maintained by the Guava team. It is used in the majority of the tests in Google’s own codebase. -
14
VHR
Front-end/back-end separated human resources management system
VHR is a full-featured human resources management system that demonstrates a production-style Java backend paired with a modern web frontend. It organizes HR domains into clear modules such as employee records, departmental structure, job titles/levels, salary and attendance, training and appraisal, and system configuration. The backend follows a clean, RESTful architecture using Spring Boot with layered services, persistence mappers, and role-based access control so permissions are explicit and auditable. The frontend is built with a component-driven approach, offering polished CRUD screens, searchable tables, import/export of data (for example, via spreadsheets), and contextual dialogs that streamline administrative workflows. Attention is given to practical enterprise needs like pagination, batch operations, file attachments, and printable or exportable reports. -
15
Ward
Server dashboard
Ward is a simple and minimalistic server monitoring tool. Ward supports an adaptive design system. Also, it supports a dark theme. It shows only principal information and can be used, if you want to see nice looking dashboard instead of looking on a bunch of numbers and graphs. Ward works nicely on all popular operating systems because it uses OSHI. -
16
Web3j
Lightweight Java and Android library for integration with Ethereum
Web3j is a lightweight, highly modular, reactive, type safe Java and Android library for working with Smart Contracts and integrating with Ethereum blockchains. This allows you to work with Ethereum blockchains, without the additional overhead of having to write your own integration code for the platform. Web3j integrates seamlessly with the Epirus Blockchain Explorer. Web3j provides full type-safe access to your blockchain applications. Plugins for leading build tools to simplify the developer experience. Create projects to work with new or import existing decentralized apps in a single command with the Web3j CLI. Simple to use framework for automated integration testing against networks within your IDE. Web3j is 100% open source and maintained by Web3 Labs. -
17
WireMock
A tool for mocking HTTP services
HTTP response stubbing, matchable on URL, header and body content patterns. Request verification, runs in unit tests, as a standalone process or as a WAR app. Configurable via a fluent Java API, JSON files and JSON over HTTP. Record/playback of stubs, fault injection, per-request conditional proxying, browser proxying for request inspection and replacement. Stateful behavior simulation and configurable response delays. Mock your APIs for fast, robust and comprehensive testing. WireMock is a simulator for HTTP-based APIs. Some might consider it a service virtualization tool or a mock server. It enables you to stay productive when an API you depend on doesn't exist or isn't complete. It supports testing of edge cases and failure modes that the real API won't reliably produce. And because it's fast it can reduce your build time from hours down to minutes. -
18
XPopup
Powerful and Beautiful Popup for Android
There are several built-in pop-up windows and more than a dozen good animations. The custom design of pop-up windows and animations is extremely simple; there is no pop-up window effect that XPopup cannot achieve. The built-in popup allows you to use the existing layout of the project, while also using the animation, interaction and logic encapsulation provided by XPopup. The UI animation is simple and follows Material Design. Many details, transitions, and level changes are considered when designing animations. The interaction is elegant, realizing elegant gesture interaction, intelligent nested scrolling, and intelligent input method interaction. Compatible with full-screen and various hole-digging screens, currently compatible with Xiaomi, Huawei, Google, OPPO, VIVO, Samsung, Meizu, and OnePlus with full-screen mobile phones. -
19
XTDB
General-purpose bitemporal database for SQL, Datalog & graph queries
XTDB is a general-purpose bitemporal database for SQL, Datalog & graph queries. XTDB contains a perfect, immutable record of every fact your system has ever known. See the entire history of your business, everywhere. Immutable records are incomplete without time-traveling queries. XTDB allows you to query the entire timeline. Make retroactive corrections, simplify data migrations, and get clarity on out-of-order events. It is the interconnection of facts that makes them valuable. Query the relational model with SQL and the graph model with Datalog, over the same data. Explore all your data. Across all implicit relationships, across all time. As a document-oriented database, XTDB makes your data immediately available without the need for an upfront schema. Both structured and unstructured data are at home in XTDB. Legal regulations like GDPR often pose a challenge when designing systems around immutable data. -
20
XXPermissions
Android Permissions Framework, Adapt to Android 16
XXPermissions is an Android runtime permission management framework designed to simplify how developers request and handle permissions across different Android versions. The project focuses on providing a unified API that abstracts the complexity introduced by evolving Android permission models, including newer platform requirements. It aims to improve developer productivity by reducing repetitive permission-handling code and minimizing compatibility issues. The library emphasizes adaptability to modern Android releases, with ongoing updates to support newer SDK levels and manufacturer-specific behaviors. It also provides structured callbacks and utilities that help developers track granted and denied permissions more clearly. Overall, XXPermissions is intended to be a practical drop-in solution for Android teams that need reliable, version-aware permission workflows in production apps. -
21
ZJsonPatch
This is an implementation of RFC 6902 JSON Patch written in Java
This is an implementation of RFC 6902 JSON Patch written in Java. It can be used to avoid sending a whole document when only a part has changed, thus reducing network bandwidth requirements if data (in JSON format) is required to send across multiple systems over network or in case of multi DC transfer. -
22
android-gif-drawable
Views and drawable for displaying animated GIFs on Android
Bundled GIFLib via JNI is used to render frames. This way should be more efficient than WebView or Movie classes. Current development builds (build from dev branch) are published to OSS snapshot repository. To use them, specify repository URL in repositories block. For Android 4.2+ (API level 17+). Supports GifTextureView hardware-accelerated rendering, and GifTexImage2D OpenGL ES 2.0+. See sample directory. Sample project is under construction. Not all features are covered yet. The simplest way is to use GifImageView (or GifImageButton) like a normal ImageView. If drawables declared by android:src and/or android:background are GIF files then they will be automatically recognized as GifDrawables and animated. If given drawable is not a GIF then mentioned Views work like plain ImageView and ImageButton. GifTextView allows you to use GIFs as compound drawables and background. -
23
apm-agent-java
Elastic APM Java Agent
Elastic APM Java Agent. Using the -javaagent option is the most common way to set up Java agents on a JVM. -
24
appcrawler
Automated mobile app crawler and testing tool built on Appium
AppCrawler is an automated mobile application testing tool designed to explore and interact with app user interfaces automatically. Built on top of the Appium automation framework, it systematically crawls through application screens and performs actions such as clicking buttons, navigating menus, and interacting with UI elements to simulate user behavior. It is commonly used for automated functional testing, UI exploration, and detecting crashes or unexpected behaviors in mobile applications. AppCrawler works by traversing the interface structure of an application and executing predefined or dynamically discovered actions on clickable components. Its behavior can be customized using configuration files that define traversal rules, element selection logic, and specific actions triggered by conditions encountered during testing. AppCrawler supports rule-based filtering such as blacklists and whitelists to control which elements are explored and which are ignored. -
25
fess
Open source enterprise search server for websites, files, and data
Fess is an open source enterprise search server designed to provide powerful full-text search capabilities across multiple data sources. It enables organizations to quickly deploy a scalable search environment without requiring deep knowledge of underlying search technologies. Fess is built on top of OpenSearch and offers an integrated solution for crawling, indexing, and searching documents from websites, file systems, and various data stores. Fess includes a built-in crawler that can collect content from sources such as databases, CSV files, and shared storage, making it suitable for centralized knowledge discovery. It supports indexing and searching across many document formats including office documents, PDFs, and compressed archives. It also provides a web-based administrative interface that allows administrators to configure crawling targets, manage indexing tasks, and adjust search settings from a graphical dashboard.
