Showing 51799 open source projects for "java-legacy"

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  • 1
    Sparrow Wallet

    Sparrow Wallet

    Desktop Bitcoin Wallet focused on security and privacy

    Sparrow Wallet is an open-source, desktop-focused Bitcoin wallet designed for users who value complete control, security, and privacy when managing their Bitcoin funds. It provides a rich graphical interface that exposes Bitcoin’s underlying UTXO model rather than hiding it behind abstractions, helping users understand every input, output, and fee involved in transactions. Sparrow supports advanced workflows such as Partially Signed Bitcoin Transactions (PSBT), multisignature setups,...
    Downloads: 18 This Week
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  • 2
    HikariCP

    HikariCP

    A solid, high-performance, JDBC connection pool at last

    HikariCP is a high-performance JDBC connection pooling library designed to offer minimal overhead and maximum throughput. It aims for simplicity and stability, concentrating on fast connection acquisition and minimal latency under load. Its internals manage a pool of connections aggressively but smartly, with options such as leak detection, timeout thresholds, and adaptive connection retirement. Because it avoids heavy internal locking, it scales well in high-concurrency environments, making...
    Downloads: 18 This Week
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  • 3
    J2ObjC

    J2ObjC

    A Java to iOS Objective-C translation tool and runtime

    J2ObjC is an open-source command-line tool from Google that translates Java source code to Objective-C for the iOS (iPhone/iPad) platform. This tool enables Java source to be part of an iOS application's build, as no editing of the generated files is necessary. The goal is to write an app's non-UI code (such as application logic and data models) in Java, which is then shared by web apps (using GWT), Android apps, and iOS apps.
    Downloads: 1 This Week
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  • 4
    RStudio

    RStudio

    RStudio is an integrated development environment (IDE) for R

    RStudio is a powerful, full-featured integrated development environment (IDE) tailored primarily for the R programming language but increasingly supportive of other languages like Python and Julia. It brings together console, editor, plotting, workspace, history, and file-management panes into a unified interface, helping data scientists, statisticians, and analysts to work more productively. The IDE is cross-platform: there are desktop versions for Windows, macOS and Linux, as well as a...
    Downloads: 26 This Week
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    Valkey GLIDE

    Valkey GLIDE

    An open source Valkey client library that supports Valkey and Redis

    Valkey General Language Independent Driver for the Enterprise (GLIDE), is an open-source Valkey client library. Valkey GLIDE is one of the official client libraries for Valkey, and it supports all Valkey commands. Valkey GLIDE supports Valkey 7.2 and above, and Redis open-source 6.2, 7.0 and 7.2. Application programmers use Valkey GLIDE to safely and reliably connect their applications to Valkey- and Redis OSS- compatible services. Valkey GLIDE is designed for reliability, optimized...
    Downloads: 8 This Week
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  • 6
    Apache Dubbo

    Apache Dubbo

    A high performance Java RPC framework

    Apache Dubbo is a high performance, lightweight, open source RPC framework written in Java. It offers three key functionalities: interface based remote call, load balancing and fault tolerance, and automatic service registration and discovery. Apache Dubbo is built to support multiple service registries and load balancing strategies right out of the box. Due to its micro-kernel and plugin design it can also be easily extended through third-party implementations.
    Downloads: 4 This Week
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  • 7
    PCL Community Edition

    PCL Community Edition

    Community version based on the PCL open source secondary development

    PCL Community Edition is an open-source community-maintained version of the Plain Craft Launcher (PCL), a popular launcher designed for managing and running Minecraft Java Edition. The project focuses on providing a flexible and feature-rich launcher environment that simplifies the process of installing game versions, managing mod loaders, and organizing modded instances. PCL-CE offers tools that help players install and configure modding frameworks such as Forge or Fabric, allowing them to easily run customized Minecraft environments without manual file management. ...
    Downloads: 64 This Week
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  • 8
    Pkl

    Pkl

    A configuration as code language with rich validation and tooling

    ...Configurations in Pkl are type-safe and support validation constraints (e.g. bounds, relations) so many errors can be caught before deployment. The language is embeddable, meaning it can run inside applications (Java, Swift, Go, etc.) to load configuration dynamically with the same safety guarantees. There’s also code generation support: writing Pkl modules can generate matching classes or data structures in target languages (Swift, Go, Java, Kotlin) so runtime config and statically typed code stay in sync.
    Downloads: 4 This Week
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  • 9
    Stroke Input Method for Android

    Stroke Input Method for Android

    Android Chinese keyboard: Stroke Input Method

    This minimalist Android IME enables input of Chinese characters via stroke sequences. It supports over 28k characters (including Cantonese), offers simplified/traditional preferences, avoids ads, permissions, and telemetry, ensuring privacy and simplicity.
    Downloads: 8 This Week
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  • 10
    SCI

    SCI

    Configurable Clojure/Script interpreter suitable for scripting

    SCI is a lightweight Clojure interpreter designed for embedding and scripting in JVM or native apps (e.g., Babashka). It supports stateful contexts, multiple evaluations, and a configurable environment without full JVM startup overhead. Packed with optional extensions (like reagent, js-interop), it enables REPL-like interactivity in minimal environments.
    Downloads: 9 This Week
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  • 11
    GanttProject

    GanttProject

    Official GanttProject repository

    GanttProject is a cross-platform desktop application for project scheduling and Gantt chart creation. It allows users to create tasks, assign resources, and track progress with ease. GanttProject is aimed at small teams and individuals who need offline project planning without the complexity or cost of enterprise tools.
    Downloads: 9 This Week
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  • 12
    MyBatis-Plus

    MyBatis-Plus

    An powerful enhanced toolkit of MyBatis for simplify development

    MyBatis-Plus is an enhanced toolkit for MyBatis, designed to simplify development and increase productivity. It provides a range of out-of-the-box features such as code generation, conditional query builders, and pagination plugins, reducing boilerplate code and streamlining database operations. MyBatis-Plus is widely used in enterprise applications for its efficiency and ease of use.
    Downloads: 9 This Week
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  • 13
    Remixed Dungeon

    Remixed Dungeon

    Traditional roguelike game with pixel-art graphics

    Remixed Dungeon is an open-source roguelike dungeon crawler for Android, derived from the classic Pixel Dungeon. It expands upon the original with new classes, items, levels, and mechanics, while remaining faithful to the permadeath and procedural generation hallmarks of the genre.
    Downloads: 8 This Week
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  • 14
    Perl5 plugins for IntelliJ IDEA

    Perl5 plugins for IntelliJ IDEA

    Perl5 plugins for IntelliJ IDEA

    Perl5-IDEA is a plugin for JetBrains IDEs, including IntelliJ IDEA, that provides comprehensive support for Perl 5 development. It enhances the development experience with features like syntax highlighting, code completion, and debugging tools.​
    Downloads: 8 This Week
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  • 15
    Brave

    Brave

    Java distributed tracing implementation compatible with Zipkin backend

    ...While typically trace data is sent to Zipkin server, third-party plugins are available to send to alternate services such as Amazon X-Ray. This repository includes dependency-free Java libraries and instrumentation for common components used in production services. For example, this includes trace filters for Servlet and log correlation for Apache Log4J. Brave's dependency-free tracer library works against JRE6+. This is the underlying api that instrumentation use to time operations and add tags that describe them. ...
    Downloads: 4 This Week
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  • 16
    Azure CLI MCP

    Azure CLI MCP

    Talk with Azure using MCP

    An MCP server that enables AI assistants to interact with Microsoft Azure via the Azure CLI, allowing tasks such as listing resources, checking configurations, fixing issues, and creating new resources through conversational commands. ​
    Downloads: 7 This Week
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  • 17
    Jazzer

    Jazzer

    Coverage-guided, in-process fuzzing for the JVM

    Jazzer is a coverage-guided, in-process fuzzer for the JVM platform developed by Code Intelligence. It is based on libFuzzer and brings many of its instrumentation-powered mutation features to the JVM.
    Downloads: 7 This Week
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  • 18
    Svix

    Svix

    The enterprise-ready webhooks service

    Build a secure, reliable, and scalable webhook platform in minutes using the Svix webhook service. Webhooks require a lot more engineering time, resources and ongoing maintenance than you would first expect. Building a secure, reliable, and scalable webhook service is hard and time-consuming. We built it so you can focus on what matters most, your business. Customer endpoints fail or hang more often than you think. You need automatic retries to ensure deliverability. You need to monitor the...
    Downloads: 17 This Week
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  • 19
    elastic4s

    elastic4s

    Elasticsearch Scala Client - Reactive, Non Blocking, Type Safe, HTTP

    ...The aim of the DSL is that requests are written in a builder-like way, while staying broadly similar to the Java API or Rest API. Each request is an immutable object, so you can create requests and safely reuse them, or further copy them for derived requests. Because each request is strongly typed your IDE or editor can use the type information to show you what operations are available for any request type.
    Downloads: 6 This Week
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  • 20
    Crafting Interpreters

    Crafting Interpreters

    Repository for the book "Crafting Interpreters"

    This repository is the companion to the book Crafting Interpreters. It contains the full source code for two interpreters (one in C and one in Java), the Markdown source of the book, the tooling to weave prose and code into a website, and build scripts to generate the executable interpreters. The book aims to teach from the ground up how to build a full-featured scripting language (called Lox) with parsing, AST, compiler / VM, garbage collection, classes, and more. Static site generator tooling to compose book + code into HTML. ...
    Downloads: 12 This Week
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  • 21
    Okio

    Okio

    A modern I/O library for Android, Java, and Kotlin Multiplatform

    Okio is a low-level I/O library created by Square for Java and Kotlin that simplifies and optimizes data access. It provides a modern alternative to Java’s InputStream and OutputStream, enabling efficient, buffered, and chainable data handling. Okio is used in many high-performance networking and serialization libraries, including OkHttp.
    Downloads: 4 This Week
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  • 22
    Quartz Scheduler
    Quartz is a richly featured, open source job scheduling library that can be integrated within virtually any Java application - from the smallest stand-alone application to the largest e-commerce system. Quartz can be used to create simple or complex schedules for executing tens, hundreds, or even tens-of-thousands of jobs; jobs whose tasks are defined as standard Java components that may execute virtually anything you may program them to do.
    Downloads: 2 This Week
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  • 23
    Spring Batch

    Spring Batch

    Spring Batch is a framework for writing batch applications using Java

    A lightweight, comprehensive batch framework designed to enable the development of robust batch applications vital for the daily operations of enterprise systems. Spring Batch provides reusable functions that are essential in processing large volumes of records, including logging/tracing, transaction management, job processing statistics, job restart, skip, and resource management. It also provides more advanced technical services and features that will enable extremely high-volume and high...
    Downloads: 6 This Week
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  • 24
    OpenRocket

    OpenRocket

    Model-rocketry aerodynamics and trajectory simulation software

    OpenRocket is a free and fully featured simulation software for designing, analyzing, and optimizing model rockets before physical construction and launch. It provides a comprehensive environment where users can assemble rocket components, visualize designs in both 2D and 3D, and simulate flight behavior using accurate aerodynamic and physics models. The software incorporates six-degree-of-freedom flight simulation, allowing it to model real-world dynamics such as stability, drag, thrust,...
    Downloads: 14 This Week
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  • 25
    DataHub

    DataHub

    The Metadata Platform for your Data and AI Stack

    DataHub is an open source metadata platform that helps organizations discover, understand, and trust their data assets at scale. It models data as a richly connected graph spanning datasets, dashboards, pipelines, ML features, and services, so users can explore relationships like lineage and ownership across tools and domains. The platform focuses on continuous metadata ingestion from many sources, treating metadata as a stream that stays fresh as systems change. A modern web UI and search...
    Downloads: 19 This Week
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