2820 projects for "java open source" with 2 filters applied:

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    Cloud tools for web scraping and data extraction

    Deploy pre-built tools that crawl websites, extract structured data, and feed your applications. Reliable web data without maintaining scrapers.

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  • 1
    v8n

    v8n

    JavaScript fluent validation library

    v8n aims to be the most fluent and simple validation library for use in any context. The API is beautifully readable and allows for easy creation of complex validations in any part of your app. Even though there are many useful default validation methods, it's a breeze to add your own fluent rules to v8n and use them anywhere in your app. The name v8n is actually derived from the structure of the word "validation". If you look closely you will find that between the v and the n, there are...
    Downloads: 0 This Week
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  • 2
    Flowy

    Flowy

    The minimal javascript library to create flowcharts

    flowy is a minimal JavaScript library for building interactive flowchart-style interfaces in web applications, allowing developers to create node-based editors, automation builders, or visual programming tools with relatively little code. It provides draggable, connectable blocks (nodes) that can be placed on a canvas, connected via lines, and rearranged dynamically while preserving the underlying graph structure. The library focuses on simplicity and aesthetics, offering a clean look out of...
    Downloads: 0 This Week
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  • 3
    OICQ

    OICQ

    Tencent QQ Bot Library for Node.js

    OICQ is a fast, feature-rich QQ client library for Node.js, enabling developers to interact with the QQ messaging platform programmatically.
    Downloads: 1 This Week
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  • 4
    Flutter Hooks

    Flutter Hooks

    React hooks for Flutter

    flutter_hooks extends Flutter with a hooks system inspired by React Hooks, aiming to simplify stateful logic inside widgets. It allows developers to reuse and isolate stateful behaviors like animations, controllers, and subscriptions without writing boilerplate StatefulWidgets. Common hooks like useState, useEffect, and useMemoized provide clear ways to manage lifecycle and dependencies inside a widget’s build method. The library improves code readability by keeping logic close to the UI...
    Downloads: 0 This Week
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  • G-P - Global EOR Solution Icon
    G-P - Global EOR Solution

    Companies searching for an Employer of Record solution to mitigate risk and manage compliance, taxes, benefits, and payroll anywhere in the world

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  • 5
    Dragonbox

    Dragonbox

    Reference implementation of Dragonbox in C++

    This library is a reference implementation of Dragonbox in C++. Dragonbox is a float-to-string conversion algorithm based on a beautiful algorithm Schubfach, developed by Raffaello Giulietti in 2017-2018. Dragonbox is further inspired by Grisu and Grisu-Exact. Dragonbox generates a pair of integers from a floating-point number: the decimal significand and the decimal exponent of the input floating-point number. These integers can then be used for string generation of the decimal...
    Downloads: 1 This Week
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  • 6
    Code Scanner

    Code Scanner

    Code scanner library for Android, based on ZXing

    Code scanner library for Android, based on ZXing.
    Downloads: 0 This Week
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  • 7
    Spire

    Spire

    Powerful new number types and numeric abstractions for Scala

    Spire is a numeric and algebraic library for Scala, offering type-safe, generic, and high-precision arithmetic. It introduces abstractions like Rings, Fields, and Rationals and supports specialized number types (e.g. Rational, Complex, Interval), macros, and seamless integration with Cats for abstract numeric programming.
    Downloads: 0 This Week
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  • 8
    Ion

    Ion

    Portable suite of libraries and tools for building client applications

    Ion is a modular C++ toolkit for building high-performance 2D/3D graphics applications with a strong emphasis on portability, correctness, and developer ergonomics. Rather than a monolithic engine, it offers focused libraries—math, image, GPU resource management, shader utilities, remote inspection, and platform abstractions—that you can adopt à la carte. The rendering layer wraps modern OpenGL/OpenGL ES concepts with a carefully layered API that tracks object lifetimes, deduplicates...
    Downloads: 0 This Week
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  • 9
    Periph

    Periph

    Peripherals I/O in Go

    periph is a Go library that unifies hardware I/O on single-board computers and embedded Linux devices, exposing clean interfaces for GPIO, I²C, SPI, UART, PWM, and more. Its philosophy is “no daemon, no codegen”—you link a Go package and speak directly to the hardware via stable abstractions, keeping deployments simple and auditable. The project auto-detects host capabilities at runtime and selects the best driver backend, smoothing over kernel and board differences across Raspberry Pi,...
    Downloads: 0 This Week
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  • The Original Buy Center Software. Icon
    The Original Buy Center Software.

    Never Go To The Auction Again.

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  • 10
    7-Zip-JBinding

    7-Zip-JBinding

    Java wrapper for 7z archiver engine

    Native (JNI) cross-platform library to extract (password protected, multi-part) 7z Zip Rar Tar Split Lzma Iso HFS GZip Cpio BZip2 Z Arj Chm Lhz Cab Nsis Deb Rpm Wim Udf archives and create 7z, Zip, Tar, GZip & BZip2 from Java.
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    Downloads: 52 This Week
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  • 11
    Whisper Library

    Whisper Library

    Whisper is a file-based time-series database format for Graphite

    Whisper is one of three components within the Graphite project. Whisper is a fixed-size database, similar in design and purpose to RRD (round-robin-database). It provides fast, reliable storage of numeric data over time. Whisper allows for higher resolution (seconds per point) of recent data to degrade into lower resolutions for long-term retention of historical data. Copies data from src in dst, if missing. Unlike whisper-merge, don't overwrite data that's already present in the target...
    Downloads: 0 This Week
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  • 12
    jQuery json-viewer

    jQuery json-viewer

    jQuery plugin for displaying JSON data

    json-viewer is a jQuery plugin for easily displaying JSON objects by transforming them into HTML.
    Downloads: 1 This Week
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  • 13
    Monix

    Monix

    Asynchronous, Reactive Programming for Scala and Scala.js

    Monix is a high-performance, reactive, and asynchronous programming library for Scala and Scala.js. Built as a Typelevel project, it provides advanced abstractions like Task, Observable, Iterant, and Coeval, enabling compositional, back-pressure‑aware event-driven systems that integrate cleanly with Cats Effect and Reactive Streams.
    Downloads: 0 This Week
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  • 14
    RetroLab

    RetroLab

    JupyterLab distribution with a retro look and feel

    RetroLab (also known as JupyterLab Retro, previously called JupyterLab Classic) is a JupyterLab distribution with a retro look and feel, more similar to the classic Jupyter notebook.
    Downloads: 0 This Week
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  • 15
    Time

    Time

    Type-safe time calculations in Swift

    Type-safe time calculations in Swift. Time is not just a bunch of Double conversion functions. The main advantage of it is that all time units are strongly-typed. Starting with Xcode 11, Time is officially available only via Swift Package Manager. Of course, you always have an option of just copying-and-pasting the code - Time is just two files, so feel free.
    Downloads: 0 This Week
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  • 16
    graphql-client

    graphql-client

    A Ruby library for declaring, composing and executing GraphQL queries

    GraphQL Client is a Ruby library for declaring, composing and executing GraphQL queries. Sample configuration for a GraphQL Client to query from the SWAPI GraphQL Wrapper. If you haven't already, familiarize yourself with the GraphQL query syntax. Queries are declared with the same syntax inside of a <<-'GRAPHQL' heredoc. There isn't any special query builder Ruby DSL. This client library encourages all GraphQL queries to be declared statically and assigned to a Ruby constant. If you're...
    Downloads: 0 This Week
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  • 17
    Popovers

    Popovers

    A library to present popovers. Simple, modern, and highly customizable

    A library to present popovers. Present any view above your app's main content. Attach to source views or use picture-in-picture positioning. Display multiple popovers at the same time with smooth transitions. Supports SwiftUI, UIKit, and multitasking windows on iPadOS. Highly customizable API that's super simple — just add .popover. Drop-in replacement for iOS 14's Menu that works on iOS 13. SwiftUI-based core for a lightweight structure. 0 dependencies. It's 2023 — about time that popovers...
    Downloads: 0 This Week
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  • 18
    PECS

    PECS

    Entity Component System (ECS) for PICO-8 & Picotron

    PECS is a lightweight Entity Component System (ECS) framework tailored for PICO-8 and Picotron, implemented in just 567 tokens. Based on KatrinaKitten's Tiny ECS Framework v1.1, PECS allows developers to manage game entities and their behaviors efficiently within the token limitations of PICO-8.
    Downloads: 0 This Week
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  • 19
    Awesome Conformal Prediction

    Awesome Conformal Prediction

    A professionally curated list of awesome Conformal Prediction videos

    awesome-conformal-prediction is a curated “awesome list” repository on GitHub collecting high-quality resources related to conformal prediction: tutorials, books, papers, theses, open-source libraries, videos, and other educational material. It is not a software library itself but a directory of resources for those wanting to learn or work with conformal prediction and uncertainty quantification. This exceptional resource is the culmination of my PhD journey in Machine Learning, specializing in Conformal Prediction under the supervision of its creator, Prof. ...
    Downloads: 0 This Week
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  • 20
    macOS Cursors Megapack for Windows

    macOS Cursors Megapack for Windows

    Tested in Windows 10 & 11, 4K (125%, 150%, 200%)

    macOS Cursors Megapack for Windows. These cursors are only for 4K (3840 x 2160 pixel) resolution.
    Downloads: 69 This Week
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  • 21
    NFFT

    NFFT

    The official NFFT library repository

    NFFT is a software library, written in C, for computing non-equispaced fast Fourier transforms and related variations.
    Downloads: 0 This Week
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  • 22
    ipynb-quicklook

    ipynb-quicklook

    Generator for Jupyter/IPython notebooks without further dependencies

    A Quick Look generator for Jupyter/IPython notebooks without further dependencies. This plugin has now been integrated into a native macOS app, Jupyter Notebook Viewer. This is the recommended way to install the QuickLook generator. A stand-alone Quick Look generator for Jupyter/IPython notebooks on macOS. Contents are rendered on-the-fly using nbviewer.js.
    Downloads: 1 This Week
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  • 23
    protostuff

    protostuff

    Java serialization library, proto compiler, code generator

    A java serialization library with built-in support for forward-backward compatibility (schema evolution) and validation.
    Downloads: 0 This Week
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  • 24
    MapMe

    MapMe

    The Android maps adapter

    MapMe is an Android library for working with Maps. MapMe brings the adapter pattern to Maps, simplifying the management of markers and annotations. MapMe takes the pain out of click listeners too. No more setting tags on markers and trying to match a tag to your data when the click event is received. As well as support for standard Adapter methods such as notifyDataSetChanged, and notifyItemInserted, MapMe supports (and recommends) DiffUtil.
    Downloads: 0 This Week
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  • 25
    gon

    gon

    Sign, notarize, and package macOS CLI tools and applications

    gon is a simple, no-frills tool for signing and notarizing your CLI binaries for macOS. gon is available as a CLI that can be run manually or in automation pipelines. It is also available as a Go library for embedding in projects written in Go. gon can sign and notarize binaries written in any language. Beginning with macOS Catalina (10.15), Apple is requiring all software distributed outside of the Mac App Store to be signed and notarized. Software that isn't properly signed or notarized...
    Downloads: 0 This Week
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