Showing 561 open source projects for "core java"

View related business solutions
  • $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
  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB 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.
    Start Free
  • 1
    compileflow

    compileflow

    Core business process engine of Alibaba Halo platform

    ...The Compileflow process engine is an important part of Taobao Business Process Management(TBBPM), which is dedicated to optimizating operations at Alibaba’s Taobao Marketplace. Specifically, Compileflow is designed to focus on pure memory execution and stateless process engines by converting process files to generate, compile and execute java code. Currently, compileflow powers multiple core systems such as Alibaba's e-commerce stores and transactions. Compileflow allows developers to design their own business processes through the process editor, which will visualize complex business logic, and build a bridge between designers and development engineers.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 2
    JWebAssembly

    JWebAssembly

    Java bytecode to WebAssembly compiler

    JWebAssembly is a compiler that translates Java bytecode into WebAssembly, enabling Java applications to run in web browsers or other Wasm-compatible environments. Instead of requiring JavaScript as an intermediary, it directly converts compiled Java classes into WebAssembly modules, preserving performance and reducing overhead. The project supports a subset of the Java standard library and focuses on enabling practical execution of Java programs in web contexts. It provides tools for...
    Downloads: 34 This Week
    Last Update:
    See Project
  • 3
    Mkpass

    Mkpass

    Mkpass - Command line Secure Password Generator

    ...I use a password manager and generate random passwords every time I need one. And while most password managers include a generator, there are times I need one outside of that. The code is written in java so it should run on any OS that supports it. Lastly, the idea and core code came from a Wikipedia article. I just took this and expanded upon it. https://en.wikipedia.org/wiki/Random_password_generator This is a single executable JAR file. While you will need Java installed, there is no need to install this program. Just download the JAR file, please it somewhere convenient, and execute it from the command line: java -jar mkpass.jar See home page for additional details and usage instructions. ...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 4
    Java Core Learning Example

    Java Core Learning Example

    Examples of learning and accumulating Java core technologies

    Java Core Learning Example is an educational Java repository focused on core language concepts and practical examples for beginners and developers reviewing fundamentals. It covers syntax, object-oriented programming, collections, I/O, NIO, reflection, runtime type information, threading, networking, and initialization behavior. Java 8 material includes lambda expressions and the Stream API.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Go from Code to Production URL in Seconds Icon
    Go from Code to Production URL in Seconds

    Cloud Run deploys apps in any language instantly. Scales to zero. Pay only when code runs.

    Skip the Kubernetes configs. Cloud Run handles HTTPS, scaling, and infrastructure automatically. Two million requests free per month.
    Start Free
  • 5
    JS-Sorting-Algorithm

    JS-Sorting-Algorithm

    A GitBook online book on sorting algorithms

    JS-Sorting-Algorithm is an educational repository and GitBook-style resource about classic sorting algorithms. It explains sorting as a core topic in data structures and algorithms, with attention to internal sorting, external sorting, time complexity, memory usage, and stability. The guide covers ten major sorting methods, including bubble sort, selection sort, insertion sort, shell sort, merge sort, quicksort, heap sort, counting sort, bucket sort, and radix sort. It compares algorithms by...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    ORMLite Android

    ORMLite Android

    ORMLite Android functionality used in conjunction with ormlite-core

    This package provides Android-specific functionality. Users that are connecting to SQL databases via JDBC connections should download the ormlite-jdbc package instead of this Android one. Object Relational Mapping Lite (ORM Lite) provides some simple, lightweight functionality for persisting Java objects to SQL databases while avoiding the complexity and overhead of more standard ORM packages.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 7
    OpenEMM e-mail & marketing automation

    OpenEMM e-mail & marketing automation

    software for email automation (newsletters, transaction mails, etc.)

    This is an archive for old versions of OpenEMM. You will find the latest version of OpenEMM here: https://wiki.openemm.org OpenEMM is a browser-based enterprise application for email automation like info and marketing newsletters, transaction mails or multi-stage email campaigns. OpenEMM offers tons of features for professional users, among them: a great user interface, template-based HTML mailings, automatic bounce management, mail opening and link tracking, lots of graphical realtime...
    Downloads: 2 This Week
    Last Update:
    See Project
  • 8
    React Native Push Notifications

    React Native Push Notifications

    React Native local and remote notifications

    React Native Local and Remote Notifications for iOS and Android. firebase-messaging, prior to version 15 requires to have the same version number in order to work correctly at build time and at run time. The Firebase Android library firebase-core is no longer needed. This SDK included the Firebase SDK for Google Analytics. Now, to use Analytics or any Firebase product that recommends the use of Analytics, you need to explicitly add the Analytics dependency. Example folder contains an example...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    MagicalPdfEditor

    MagicalPdfEditor

    This is a small PDF editor based on OpenPdf core and AndroidPdfViewer

    This is a small PDF editor based on OpenPDF Core and AndroidPdfViewer. As there is not many open-source easy working PDF editors and PDF wizards, I decided to create a simple directory to resolve my issues. Here I have worked on two separate cores, add some functionality to them, and combined them together to achieve my target. I am working on this repo, any help will be appreciated. Just clone the project and trance the source code, It's really easy and clear. All functionality in...
    Downloads: 0 This Week
    Last Update:
    See Project
  • One Monitoring Tool for IT, OT and Cloud | Free Trial Icon
    One Monitoring Tool for IT, OT and Cloud | Free Trial

    Vendor-agnostic monitoring across on-prem servers, cloud platforms and OT devices, all in one dashboard. No more tool sprawl.

    Modern infrastructure spans data centers, cloud platforms and factory floors, and every blind spot between them is a risk. PRTG supports SNMP, WMI, SSH and other standard protocols to monitor IT, OT and hybrid environments through one customizable dashboard. Build the views your team needs, from network health to application performance, without switching tools. Try PRTG free for 30 days now.
    Try PRTG Free
  • 10
    Apollo

    Apollo

    Java libraries for writing composable microservices

    ...It incorporates both apollo-api and apollo-core and ties them together with several other useful modules to get a standard API service.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    AWS Greengrass Core SDK for Java
    The AWS Greengrass Core SDK for Java enables Java developers to develop Lambda functions which will run within Greengrass. This document provides instructions for preparing your Greengrass Core environment to run Lambda functions written in Java. It also includes examples on how to develop a Lambda function in Java as well as packaging and running an example Hello World file in Java for your Greengrass core.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    JSweet

    JSweet

    A Java to JavaScript transpiler

    JSweet leverages TypeScript to write rich and responsive Web applications in Java through the use of JavaScript libraries and frameworks. With JSweet, Java programs are transpiled (source-to-source compiled) to TypeScript and JavaScript for being run in browsers, mobile Web views, or in Node.js. It provides web applications with type-checking and generates fully type-checked JavaScript programs. It stands on Oracle's Java Compiler (javac) and on Microsoft's TypeScript (tsc). JSweet depends...
    Downloads: 4 This Week
    Last Update:
    See Project
  • 13

    Databene Commons

    databene commons provides extensions to the Java core library

    'databene commons' is an open source Java library that provides extensions to the Java core library by utility classes, abstract concepts and concrete implementations.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 14
    Apache Dubbo Spring Boot Project

    Apache Dubbo Spring Boot Project

    Spring Boot project for Apache Dubbo

    ...Dubbo supports multiple service registries, which can detect service online/offline instantly. Dubbo’s micro-kernel and plugin design ensures that it can easily be extended by third party implementation across core features like protocol, transport, and serialization.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 15
    UCanAccess

    UCanAccess

    A pure Java JDBC driver for Microsoft Access database files

    UCanAccess is a pure Java JDBC Driver implementation which allows Java developers and JDBC client programs to read/write Microsoft Access database (.mdb and .accdb) files. No ODBC needed.
    Leader badge
    Downloads: 5,585 This Week
    Last Update:
    See Project
  • 16
    jsoncat

    jsoncat

    Lightweight HTTP framework built in Java

    jsoncat is a lightweight HTTP framework built in Java (using Netty) that aims to replicate some of the feel of Spring Boot—but in a minimal, educational style focused on clarity rather than full enterprise complexity. The project is organized as a small library and tutorial-style codebase, where core HTTP handling, routing, and JSON processing are exposed in a compact way so learners can trace how HTTP requests are parsed and dispatched.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Essentials

    Essentials

    General purpose utilities and hash functions for Android and Java

    ...Essentials emphasizes speed and low footprint, with components such as LongHashMap delivering measurable performance improvements over standard implementations. The library is compatible with both Android and standard Java environments, making it broadly usable across platforms. Overall, Essentials serves developers who want faster and more convenient core utilities without adopting large libraries like Guava or Apache Commons.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 18
    exchange-core java

    exchange-core java

    Ultra-fast matching engine written in Java based on LMAX Disruptor

    Exchange-core is an open source market exchange core based on LMAX Disruptor, Eclipse Collections (ex. Goldman Sachs GS Collections), Real Logic Agrona, OpenHFT Chronicle-Wire, LZ4 Java, and Adaptive Radix Trees. HFT optimized. Priority is a limit-order-move operation mean latency (currently ~0.5µs). Cancel operation takes ~0.7µs, placing new order ~1.0µs.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    exchange-core

    exchange-core

    Ultra-fast matching engine written in Java based on LMAX Disruptor

    Exchange-core is an open-source market exchange core based on LMAX Disruptor, Eclipse Collections (ex. Goldman Sachs GS Collections), Real Logic Agrona, OpenHFT Chronicle-Wire, LZ4 Java, and Adaptive Radix Trees. Designed for high scalability and pauseless 24/7 operation under high-load conditions and providing low-latency responses. Single order book configuration is capable to process 5M operations per second on 10-years old hardware (Intel® Xeon® X5690) with moderate latency degradation. ...
    Downloads: 1 This Week
    Last Update:
    See Project
  • 20
    Riot Android

    Riot Android

    A glossy Matrix collaboration client for Android

    Riot Android is the original Android client for the Matrix network — a decentralized, secure communication protocol — that enables users to send end-to-end encrypted messages, join rooms, conduct voice and video calls, and interact across federated communities without relying on centralized servers. As the predecessor to Element X, Riot Android laid the groundwork for mobile access to Matrix while providing advanced features like threaded replies, rich media handling, room moderation, and...
    Downloads: 8 This Week
    Last Update:
    See Project
  • 21
    Financial  Supervision  System (SupTech)

    Financial Supervision System (SupTech)

    RegTech / SupTech : Java EE , BI, PM & Report Designer

    FINA IRP is Web Based, J2EE, OS/DB independent SupTech, BI and PM for SUPERVISORS (Regulators) to receive data from BANKS, MICRO FINANCE INSTITUTIONS (MFI), COOPERATIVES, INSURANCE Companies etc. Generates UBPR, PEARLS, EWS, etc. FINA Integrated Regulatory Platform consists with: - META STRUCTURE DESIGNER; - REPORT DESIGNER: Flexible , Spreadsheet based (LO/OOO) designer; - DATA COLLECTION SYSTEM: DCS is a web-portal and an e-mail robot connected to FINA core through the data...
    Downloads: 2 This Week
    Last Update:
    See Project
  • 22
    MAME4droid

    MAME4droid

    MAME Android Emulator.

    MAME4droid (0.139u1) is developed by David Valdeita (Seleuco), port of MAME 0.139u1 emulator by Nicola Salmoria and TEAM. MAME4droid (0.139u1) emulates arcade games supported by original MAME 0.139u1. This MAME4droid version is targeted to Dual-Core devices, because it is based on a high specs 2010 PC MAME build. Anyway don't expect arcade games of the 90 to work at full speed. With some games that are really bad optimized (like outrun or mk series) you will need at least a 1.5 ghz...
    Leader badge
    Downloads: 151 This Week
    Last Update:
    See Project
  • 23
    AndroidGodEye

    AndroidGodEye

    Easily monitor the performance of your app real time in browser

    Android developer lack of monitoring of performance data, especially in a production environment. so we need "AndroidGodEye". AndroidGodEye is a performance monitor tool for Android(not limited to performance data) , you can easily monitor the performance of your app in real-time in pc browser.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 24
    JavaForce

    JavaForce

    Java Development Framework

    JavaForce (JF) is a Java library extending the capabilities of Java. It includes a VoIP stack and native bindings for FFMPEG, OpenGL, and Camera (Windows, Linux and Mac). Includes many apps such as jfPhone, jfPBX, jfPaint, jfVideo Creator, etc. JF is the core of the Java/Linux Operating System : jfLinux.sf.net JF is also used to create another Minecraft clone : jfcraft.sf.net Moved to github.com/pquiring/javaforce
    Leader badge
    Downloads: 14 This Week
    Last Update:
    See Project
  • 25

    XKomm2

    Chat program written in Java

    This is a pure Java 1.1 project to produce an instant messaging framework that can work on any device that supports Java 1.1. The core principle, which is hard to find these days, is to be essentialist and minimalist in external and internal design. The IM app can be used to chat between friends person to person. It is brought to you by Larssentech.org, concretely from Jeffrey and Kenneth, great programmers :D
    Downloads: 0 This Week
    Last Update:
    See Project