Showing 693 open source projects for "core java"

View related business solutions
  • Build Agents and Models on One Platform Icon
    Build Agents and Models on One Platform

    Everything you need to build production-ready agents and models. Access 200+ Google and third-party AI models and tools.

    Gemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
    Start Free
  • $300 Free Credits to Build on Google Cloud Icon
    $300 Free Credits to Build on Google Cloud

    New customers can spin up VMs, build with AI, and query data at no cost.

    Put your $300 in credit toward real workloads, then keep building with free monthly usage for 20+ products. No commitment and no charge until you upgrade.
    Start Free
  • 1
    MuJoCo

    MuJoCo

    Multi-Joint dynamics with Contact. A general purpose physics simulator

    MuJoCo, developed and maintained by Google DeepMind, is a high-performance physics engine designed for simulating complex, articulated systems that interact through contact. It is widely used in research fields such as robotics, biomechanics, computer graphics, animation, and machine learning, where fast and accurate physics simulations are essential. The engine provides a robust C API optimized for real-time computation, making it suitable for scientific research and advanced simulation...
    Downloads: 14 This Week
    Last Update:
    See Project
  • 2
    Zerocode

    Zerocode

    API automation and load testing framework

    A community-developed, free, open source, microservices API automation and load testing framework built using JUnit core runners for Http REST, SOAP, Security, Database, Kafka and much more. Zerocode Open Source enables you to create, change, orchestrate and maintain your automated test cases declaratively with absolute ease. Zerocode makes it easy to create and maintain automated tests with absolute minimum overhead for REST,SOAP, Kafka Real Time Data Streams and much more. It has the best...
    Downloads: 4 This Week
    Last Update:
    See Project
  • 3
    Pixeval

    Pixeval

    Wow. Yet another Pixiv client!

    Pixeval is a third-party proxy-free P station client developed by me as an amateur. The UI is implemented using Windows Presentation Foundation , based on .NET Core 3.0 , and supports Windows 7-10 (planning to cancel support other than Win10), and implements most of the The browsing function and many enhancements have been made. It has been open sourced on Github based on the AGPL protocol . The project was conceived in 2018. At that time, the api of the P station was written in Java. At that time, it could also be accessed by modifying the hosts method. ...
    Downloads: 16 This Week
    Last Update:
    See Project
  • 4
    Realm

    Realm

    Mobile database: a replacement for Core Data & SQLite

    Realm’s mobile database is an open source, developer-friendly alternative to CoreData and SQLite. Start in minutes, port your app in hours, and save yourself weeks of work. Available for Swift, Objective-C, Java, Kotlin, C#, and JavaScript. Realm’s object-oriented data model is simple to learn, doesn’t need an ORM, and lets you write less code. Realm’s local database persists data on-disk, so apps work as well offline as they do online. Realm is fully-featured, lightweight, and efficiently...
    Downloads: 12 This Week
    Last Update:
    See Project
  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

    Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
    Start Free
  • 5
    Cats Effect

    Cats Effect

    The pure asynchronous runtime for Scala

    Cats-Effect is a high-quality functional programming library for Scala that provides a principled way to represent and manage side effects, particularly asynchronous and concurrent computations. It is part of the broader Typelevel ecosystem and builds on the abstractions from Cats (such as Functor, Monad, etc.). The core abstraction is the IO type (or effect types more generally), which encodes effectful computations in a pure, referentially transparent way. Cats-Effect offers capabilities like deferred execution, cancellation, resource safety (Resource), fiber concurrency (lightweight threads), and interoperation with underlying runtime platforms (JVM, Java concurrency, etc.). ...
    Downloads: 6 This Week
    Last Update:
    See Project
  • 6
    Android Upload Service

    Android Upload Service

    Easily upload files in the background with progress notification

    Easily upload files (Multipart/Binary/FTP out of the box) in the background with progress notification. Support for persistent upload requests, customizations and custom plugins. At the core of the library, there is a Service that handles multiple concurrent upload tasks in the background. It publishes broadcast intents to notify status. This way the logic is completely decoupled from the UI. You are safe launching upload requests from your fragments, activities and services without worrying...
    Downloads: 4 This Week
    Last Update:
    See Project
  • 7
    Supertonic

    Supertonic

    Lightning-fast, on-device TTS, running natively via ONNX

    ...The repository provides complete reference implementations across many programming ecosystems—Python, Node.js, browser (WebGPU/WASM), Java, C++, C#, Go, Swift, iOS, Rust, and Flutter.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 8
    Standard Webhooks

    Standard Webhooks

    The Standard Webhooks specification

    Standard Webhooks is a community-driven specification and set of open-source tools designed to make webhooks consistent, secure, and interoperable across providers. The project defines strict guidelines covering aspects like signature formats, headers, timestamps, replay protection, and forward compatibility. It includes reference implementations for signature verification and signing across multiple languages such as Python, JavaScript/TypeScript, Go, Rust, Ruby, PHP, C#, Java, and Elixir,...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    Android Interview Questions

    Android Interview Questions

    Your Cheat Sheet For Android Interview

    This repository is a comprehensive study guide for Android interviews, organized to cover the platform from fundamentals to advanced topics. It includes explanations and Q&A on the Android app lifecycle, activities and fragments, services, broadcast receivers, content providers, and the build system. Modern practices are addressed as well—Kotlin language features, coroutines, Jetpack components, MVVM/MVI architecture, dependency injection, and testing strategies. Performance and reliability...
    Downloads: 0 This Week
    Last Update:
    See Project
  • Fully Managed MySQL, PostgreSQL, and SQL Server Icon
    Fully Managed MySQL, PostgreSQL, and SQL Server

    Automatic backups, patching, replication, and failover. Focus on your app, not your database.

    Cloud SQL handles your database ops end to end, so you can focus on your app.
    Start Free
  • 10
    Nomulus

    Nomulus

    Top-level domain name registry service on Google Cloud Platform

    Nomulus is a production-grade, open-source domain registry platform used to operate top-level domains (TLDs). It implements the core registry protocols—EPP for registrar interactions, WHOIS/RDAP for public data access—and manages the lifecycle of domain objects, hosts, and contacts. The system is built to scale and to enforce policy: pricing rules, reserved names, premium tiers, grace periods, and automated renewals are modeled explicitly. It integrates with DNS provisioning, data escrow,...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Gatling Studio

    Gatling Studio

    Desktop app that helps you craft Gatling load-testing simulations

    Gatling Studio is a native desktop application created to simplify the creation of Gatling load-testing simulations from real browser traffic. Instead of hand-writing scenarios in Scala or Java from scratch, you use Gatling Studio to drive a Chromium-based browser through a typical user journey. The tool captures all HTTP and HTTPS requests and responses, saves them as a HAR file, and then automatically converts that data into a structured Gatling project with groups, pauses, and exec blocks. It includes logic to filter out noisy or irrelevant requests such as font files, analytics beacons, and static assets, so the generated scenario focuses on the core business interactions. ...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    Centaur Emacs

    Centaur Emacs

    A Fancy and Fast Emacs Configuration

    ...Supports multiple programming languages, C/C++/Object-C/C#/Java, Python/Ruby/Perl/PHP/Shell/Powershell/Bat, JavaScript/Typescript/JSON/YAML, HTML/CSS/XML, and Golang/Swift/Rust/Dart/Elixir.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    Spring AI Alibaba Examples

    Spring AI Alibaba Examples

    Spring AI Alibaba examples for building and testing AI apps

    Spring AI Alibaba Examples provides a collection of example projects that demonstrate how to use Spring AI and Spring AI Alibaba across different scenarios, from basic setups to more advanced AI applications. It is designed to help developers understand core concepts, explore practical implementations, and follow best practices when building AI-powered systems using the Spring ecosystem. Each module focuses on a specific use case such as chat, image processing, audio handling, graph...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Scalatra

    Scalatra

    Tiny Scala high-performance, async web framework

    Scalatra is a lightweight, high-performance micro web framework written in Scala, inspired by the Ruby framework Sinatra. Its goal is to provide a minimal but expressive foundation for building web applications or REST APIs in Scala without the verbosity or steep learning curve of larger frameworks. It supports asynchronous request handling, routing, filters, content negotiation, and easy integration with templating, JSON libraries, and other web middleware. Being unopinionated, it lets...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    Micrometer

    Micrometer

    App observability facade for the most popular observability tools

    Micrometer provides a simple facade over the instrumentation clients for the most popular observability systems, allowing you to instrument your JVM-based application code without vendor lock-in. Think SLF4J, but for observability. Micrometer provides vendor-neutral interfaces for timers, gauges, counters, distribution summaries, and long task timers with a dimensional data model that, when paired with a dimensional monitoring system, allows for efficient access to a particular named metric...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    Gideros

    Gideros

    Gideros Release version

    ...Apart from supporting multiple platforms, Gideros also provides automatic screen scaling and automatic selection of proper image resolution, which makes supporting different screen resolutions, aspect ratios, and universal projects an easy task. You can easily extend the core with plugins. Import your existing (C, C++, Java or Obj-C) code, bind to Lua, and interpret them directly. Dozens of open-source plugins are already developed and ready to use: ads, in-app purchases, physics for 2d or 3d, Steam integration, and many more.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 17
    GeoTools, the Java GIS toolkit

    GeoTools, the Java GIS toolkit

    Toolkit for working with and mapping geospatial data

    GeoTools is an open source (LGPL) Java code library which provides standards compliant methods for the manipulation of geospatial data. GeoTools is an Open Source Geospatial Foundation project. The GeoTools library data structures are based on Open Geospatial Consortium (OGC) specifications.
    Leader badge
    Downloads: 498 This Week
    Last Update:
    See Project
  • 18
    Mifos - Open Source Core Banking

    Mifos - Open Source Core Banking

    Democratizing Financial Services Worldwide

    The Mifos Stack provides API-driven core banking infrastructure in the cloud. Apache Fineract (https://github.com/apache/fineract/) is the back-end core banking platform originated by the Mifos Initiative. Mifos X acts as the reference web and mobile apps for staff and customers providing an out of the box ready-to-deploy solution on top of Apache Fineract along with reporting, payments orchestration and other ancillary solutions. More than 20 million customers are reached by 400+...
    Leader badge
    Downloads: 74 This Week
    Last Update:
    See Project
  • 19
    Downloads: 0 This Week
    Last Update:
    See Project
  • 20
    VirtualSatellite

    VirtualSatellite

    Virtual Satellite

    Virtual Satellite is a DLR open source software for model based systems engineering MBSE. One of the major features of Virtual Satellite is the modular data model, that can be easily customized to your personal needs. Today, there are already various different versions: - Virtual Satellite 4 - Core is the entry point to start developing and the basis for all other versions - Virtual Satellite 4 - CEF is a specialized version for the use in our Concurrent Engineering Facility - Virtual...
    Leader badge
    Downloads: 604 This Week
    Last Update:
    See Project
  • 21
    jd-gui-duo

    jd-gui-duo

    A 2-in-1 JAVA decompiler based on JD-CORE v0 and v1 supporting 3rd par

    Leader badge
    Downloads: 61 This Week
    Last Update:
    See Project
  • 22
    nmrshiftdb2
    nmrshiftdb2 is a NMR database (web database) for organic structures and their nuclear magnetic resonance (nmr) spectra. It allows for spectrum prediction (13C, 1H and other nuclei) as well as for searching spectra, structures and other properties. The nmrshiftdb2 software is open source, the data is published under an open content license. The core of nmrshitdb2 are fully assigned spectra with raw data and peak lists (we have pure peak lists as well). Those datasets are peer reviewed by a...
    Leader badge
    Downloads: 624 This Week
    Last Update:
    See Project
  • 23

    Tibetan Unicode Keyboard

    Screen keyboards in MS Excel and in Java for typing Tibetan characters

    A Tibetan character is formed by stacking the middle (core) character with lower character stack(s) and upper stack. The tools in this package has been tested to work well in Windows 10 and above. The Java version is in the project titled Tibetan Java Keyboard. The MS Excel version does not work on Excel operating in MacOS. The Excel version uses Excel macros and VBA codes. One needs to Enable Macro to allow it to work.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    Vector Pascal is a language targeted at SIMD multi-core instruction-sets such as the AVX and SSE2 or x86-64-v3. It has a SIMD compiler which supports parallel vector operations, loop unrolling, common sub expression removal etc. It is implemented in Java.
    Downloads: 11 This Week
    Last Update:
    See Project
  • 25

    Prime number ( primenumbers )

    Benchmark for 50 000 000 prime numbers as single and multicore

    Simple source files and compiled JAR Java programs, for benchmark 50 000 000 cycle finding prime numbers. On Intel(R) Core(TM) i5-8600K CPU, Windows 10 20H2, i have 39 second on single core and 7,6 second on multi core. (PS: C++ multicore 6 second). Added C files for gcc compiler in Windows 10 and for Xcode C command line project in MacOS ( tested on Mac mini M2 with single core 16 to 25 sec and multicore 2,3 to 5 second by compiler -O switch). ...
    Downloads: 0 This Week
    Last Update:
    See Project