Open Source Java Software - Page 57
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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.
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Telegram Bot Java Library
Java library to create bots using Telegram Bots API
A simple-to-use library to create Telegram Bots in Java. -
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TempleApp
Android App which handles the information about temple
This app is a cost-efficient way of maintaining records of poojas, donations made by people and also all the financial records in temples. Using this app, people in the temple counter will be able to enter all the details regarding the poojas they want or some donations they want to do for the temple. This app is connected to a printer so that it will print the details of pooja registrations of users. The app has a login interface and only some people like General secretary, president and treasurer of the temple can log in and be able to access the complete database. -
3
Termin-Bot
Telegram bot to get notifications about free appointments
Termin (eng. appointment) is essential in Germany, especially in Berlin. Sometimes it is tough to get a termin in public institutions and this bot is a way to automate termin checks and send Telegram notifications, if free termin was found. The code could be also considered as a template for subsequent development. The principle of bot operation is to refresh a webpage with needed appointments periodically [TERMIN_URL] and to recognize the change on it. E.g., the page always contains the phrase "No free appointments" [NO_TERMIN_FOUND_STRING]. Then some free appointments are added to the system, and the phrase "No free appointments" disappears. There is a new phrase (e.g., "List of free appointments" [TERMIN_FOUND_STRING]) instead of the old one. Bot recognizes the change on the webpage and sends Telegram notifications about free appointments. -
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The Ballerina programming language
The Ballerina Programming Language
Ballerina is an open-source programming language for the cloud that makes it easier to use, combine, and create network services. Network primitives in the language make it simpler to write services and run them in the cloud. Structural types with support for openness are used both for static typing within a program and for describing service interfaces. Type-safe, declarative processing of JSON, XML, and tabular data with language-integrated queries. Explicit error handling, static types, and concurrency safety, combined with a familiar, readable syntax make programs reliable and maintainable. Easy and efficient concurrency with sequence diagrams and language-managed threads without the complexity of asynchronous functions. Programs have both a textual syntax and an equivalent graphical form based on sequence diagrams. -
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ThingsBoard Message Queue (TBMQ)
Open-source, scalable, and fault-tolerant MQTT broker
TBMQ is a lightweight message broker built to support ThingsBoard's IoT platform, focusing on telemetry data streaming and device communication. It uses Kafka-compatible APIs and is optimized for high-throughput messaging, device scalability, and low-latency delivery. TBMQ is ideal for IoT backends needing MQTT or Kafka-style pub/sub infrastructure. -
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TilesFX
A JavaFX library containing tiles that can be used for dashboards
A JavaFX library containing tiles for Dashboards. The Tile is a simple JavaFX Control that comes with different skins. To get an idea on how to use the skins with their parameters you could either take a look at the Demo file or check out the TilesFX Demo project which also contains information on how to combine TilesFX with other libraries e.g. Medusa You can also check my blog where you will find additional information about certain tiles. -
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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. -
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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. -
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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. -
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10
Tsunami
Network security scanner for detecting severity vulnerabilities
Tsunami is a general purpose network security scanner with an extensible plugin system for detecting high severity vulnerabilities with high confidence. When security vulnerabilities or misconfigurations are actively exploited by attackers, organizations need to react quickly in order to protect potentially vulnerable assets. As attackers increasingly invest in automation, the time window to react to a newly released, high severity vulnerability is usually measured in hours. This poses a significant challenge for large organizations with thousands or even millions of internet-connected systems. In such hyperscale environments, security vulnerabilities must be detected and ideally remediated in a fully automated fashion. To do so, information security teams need to have the ability to implement and roll out detectors for novel security issues at scale in a very short amount of time. Furthermore, it is important that the detection quality is consistently very high. -
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Tweaked
Just another ComputerCraft fork
Tweaked is a mod for Minecraft that adds programmable computers, turtles and more to the game. A fork of the much-beloved ComputerCraft, it continues its legacy with improved performance and stability, along with a wealth of new features. Tweaked can be installed from CurseForge or Modrinth. It runs on both Minecraft Forge and Fabric. -
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UML Reverse Mapper
Automatically generate class diagram from code
UML Reverse Mapper is a utility that helps convert existing code structures into UML-like representations so developers can visualize and reason about their systems. It is aimed at teams that inherit codebases or work on legacy projects and need a fast way to understand classes, relationships, and dependencies. Instead of drawing UML by hand, you point the tool at the code and let it generate artifacts that resemble standard UML diagrams. This dramatically speeds up documentation and makes architectural conversations more concrete. Because it is source-first, the documentation it produces is less likely to get out of sync than manually authored diagrams. It’s especially helpful for onboarding, architecture reviews, and planning refactors because you can show real structure, not just intended structure. -
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UltimateRecyclerView
A RecyclerView(advanced and flexible version of ListView in Android)
UltimateRecyclerView is a RecyclerView(advanced and flexible version of ListView) with pulling to refresh, loading more, swiping to dismiss, draging and drop, animations ,sticky header,show or hide toolbar and FAB when scrolling and many other features.You can use it just like RecyclerView. Notice that UltimateRecyclerView is a project under development. Swipe to refresh(using android.support.v4.widget.SwipeRefreshLayout). Many kinds of animations. Swipe to dismiss. Parallax or normal head view. Drag and drop items. Loading more when reach the last item(infinite scrolling). Custom views in loading more. Showing or hiding toolbar and floating button when scrolling. Scrollbars and colorful styles of swipe to refresh. Sticky header like instagram. Support different layout in adapter. Loading adapter with animation. Expandable view in recyclerview. -
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Vertical Stepper Form Library
Vertical Stepper Form Library for Android
This Android library implements a highly customizable vertical stepper form. -
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Vespa
The open big data serving engine
Make AI-driven decisions using your data, in real-time. At any scale, with unbeatable performance. Vespa is a full-featured text search engine and supports both regular text search and fast approximate vector search (ANN). This makes it easy to create high-performing search applications at any scale, whether you want to use traditional techniques or a modern vector-based approach. You can even combine both approaches efficiently in the same query, something no other engine can do. Recommendation, personalization and targeting involves evaluating recommender models over content items to select the best ones. Vespa lets you build applications which does this online, typically combining fast vector search and filtering with evaluation of machine-learned models over the items. This makes it possible to make recommendations specifically for each user or situation, using completely up to date information. -
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Walle
A new generation of channel package packaging artifact
Walle, a new generation of channel package packaging artifact under the signature of Android Signature V2 Scheme. Wall-E generates channel packages by adding customized channel information to the blocks in the Apk APK Signature Block, thereby improving the efficiency of channel package generation. It can be used as a stand-alone tool or deployed on an HTTP server to process the upgraded network of the channel package Apk in real-time. ask. The way to generate the channel package is to assemble${variantName}Channelscombine with the instruction. The generation directory of the channel package is stored in the default location build/outputs/apk/, and the output directory can also be specified through the parameters wallein the closure.apkOutputFolder. configFileis the path to the configuration file containing channel information and additional information. -
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WorldWind Java
For building cross-platform 3D geospatial apps in Java
WorldWind Java is an open-source virtual globe SDK developed by NASA that allows developers to embed a 3D Earth visualization into Java applications. It renders detailed global terrain and satellite imagery, and supports real-time geographic data overlays, making it ideal for applications in geospatial analysis, education, simulation, and scientific visualization. With its flexible API and plugin system, WorldWind Java is a powerful platform for building interactive geospatial applications that need accurate globe rendering and data integration. -
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Wren Engine
The Semantic Engine for Model Context Protocol(MCP)
Wren Engine is a semantic engine designed to empower Model Context Protocol (MCP) clients and AI agents by providing accurate, contextual, and governed access to business data. It serves as a bridge between large language models (LLMs) and enterprise systems, facilitating seamless integration and interaction. -
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WxJava
WeChat develops Java SDK, supports back-end development
WeChat develops Java SDK, supports back-end development including WeChat payment, open platform, small program, enterprise WeChat, official account, etc. For project cooperation and negotiation, please contact WeChat binary0000(search and add friends in WeChat, please indicate the intention of coming, if you need to discuss about SDK issues, please refer to the group discussion below, do not add this WeChat). Important reminder for beginners: This project is only an SDK development kit, and does not provide web implementation. It is recommended to use mavenor gradlereference this project to use various functions provided by this SDK. For details, please refer to [Demo project] or some units in this project test code. -
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X's Recommendation Algorithm
Source code for the X Recommendation Algorithm
The Algorithm is Twitter’s open source release of the core ranking system that powers the platform’s home timeline. It provides transparency into how tweets are selected, prioritized, and surfaced to users, reflecting Twitter’s move toward openness in recommendation algorithms. The repository contains the recommendation pipeline, which incorporates signals such as engagement, relevance, and content features, and demonstrates how they combine to form ranked outputs. Written primarily in Scala, it shows the architecture of large-scale recommendation systems, including candidate sourcing, ranking, and heuristics. While certain components (such as safety layers, spam detection, or private data) are excluded, the release provides valuable insights into the design of real-world machine learning–driven ranking systems. The project is intended as a reference for researchers, developers, and the public to study, experiment with, and better understand the mechanisms behind social media content. -
21
XUI
A simple and elegant Android native UI framework
XUI is a lightweight Android native UI framework that provides a comprehensive set of components and design styles to simplify mobile interface development. It aims to reduce the complexity of building Android UIs by offering a unified and consistent design system with ready-to-use components. The library includes a wide range of UI elements such as buttons, text inputs, dialogs, pickers, navigation bars, and more, covering most common development needs. It is designed to be easy to integrate and use, with simplified APIs that allow developers to implement features quickly without extensive boilerplate code. XUI also emphasizes visual consistency by providing predefined themes and styling options that ensure a cohesive look across applications. Despite its broad functionality, it maintains a relatively small footprint, making it efficient for mobile environments. Overall, XUI is a practical toolkit for accelerating Android UI development while maintaining quality and consistency. -
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Xodus
Transactional schema-less embedded database used by JetBrains
JetBrains Xodus is a transactional schema-less embedded database that is written in Java and Kotlin. It was initially developed for JetBrains YouTrack, an issue tracking and project management tool. Xodus is also used in JetBrains Hub, the user management platform for JetBrains' team tools, and in some internal JetBrains projects. Xodus is highly concurrent. Reads are completely non-blocking due to MVCC and true snapshot isolation. Xodus is schema-less and agile. It does not require schema migrations or refactorings. Xodus is embedded. It does not require installation or administration. There are three different ways to deal with data, which results in three different API layers: Environments, Entity Stores and Virtual File Systems. Gradle is used to build, test, and publish. JDK 1.8 or higher is required. -
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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. -
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Zuul
Gateway service providing dynamic routing, monitoring and more
Zuul is an L7 application gateway that offers many capabilities, including dynamic routing, monitoring, security, resiliency and more. It is used in the backend of the Netflix streaming service as a front door for all requests from devices and web sites. Zuul is ideal for cases like this where API traffic volume and diversity can become overwhelming and cause production issues to arise suddenly and without warning. Zuul has a broad range of filters that enable it to perform multiple functions quickly and apply functionality to services like Netflix. These functions include security authentication, dynamic routing, stress testing, load shedding and more. -
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adventure
A user-interface library, formerly known as text, for Minecraft
Adventure is a library for server-controllable user interface elements in Minecraft: Java Edition. The Adventure documentation should be used alongside the Javadocs. If you have further questions, feel free to join our Discord. Most users will want to use Adventure as a component of an existing modding platform. The best integrated are our Native Support, but we also support other platforms via adapters.
