Showing 5430 open source projects for "java open source projects"

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  • 1
    Cytoscape.js

    Cytoscape.js

    Graph theory library for visualization and analysis

    A fully featured graph library written in pure JS. Permissive open source license (MIT) for the core Cytoscape.js library and all first-party extensions. Used in commercial projects and open-source projects in production. Designed for users first, for both frontfacing app usecases and developer usecases. Highly optimized. Compatible with All modern browsers. Legacy browsers with ES5 and canvas support.
    Downloads: 11 This Week
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  • 2
    Kanba

    Kanba

    Kanba is an open-source project management tool for modern teams

    Kanba is a modern, open-source, self-hostable Trello-like project management tool aimed at solo developers, indie hackers, and small teams. It emphasizes simplicity, speed, and a distraction-free experience while offering core Kanban board functionality. Built with a modern stack—Next.js, Tailwind CSS, Supabase, and optional Stripe integration—it features dark/light modes, unlimited projects, team collaboration tools, and seamless deployment both locally and to platforms like Vercel.
    Downloads: 2 This Week
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  • 3
    CondaPkg.jl

    CondaPkg.jl

    Add Conda dependencies to your Julia project

    Add Conda dependencies to your Julia project. This package is a lot like Pkg from the Julia standard library, except that it is for managing Conda packages. Conda dependencies are defined in CondaPkg.toml, which is analogous to Project.toml. CondaPkg will install these dependencies into a Conda environment specific to the current Julia project. Hence dependencies are isolated from other projects or environments. Functions like add, rm, status exist to edit the dependencies programmatically....
    Downloads: 7 This Week
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  • 4
    Openfire

    Openfire

    An XMPP server licensed under the Open Source Apache License

    Openfire is a real time collaboration (RTC) server licensed under the Open Source Apache License. It uses the only widely adopted open protocol for instant messaging, XMPP (also called Jabber). Openfire is incredibly easy to setup and administer, but offers rock-solid security and performance.
    Downloads: 18 This Week
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  • 5
    ElasticJob

    ElasticJob

    Distributed scheduled job framework

    ElasticJob is a distributed scheduling solution consisting of two separate projects, ElasticJob-Lite and ElasticJob-Cloud. ElasticJob-Lite is a lightweight, decentralized solution that provides distributed task sharding services. ElasticJob-Cloud uses Mesos to manage and isolate resources. It uses a unified job API for each project. Developers only need code one time and can deploy at will. Support job sharding and high availability in distributed system. Scale out for throughput and...
    Downloads: 3 This Week
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  • 6
    Emerge

    Emerge

    Browser-based interactive codebase and dependency visualization tool

    Emerge (or emerge-viz) is an interactive code analysis tool to gather insights about source code structure, metrics, dependencies, and complexity of software projects. You can scan the source code of a project, calculate metric results and statistics, generate an interactive web app with graph structures (e.g. a dependency graph or a filesystem graph), and export the results in some file formats. Emerge currently has parsing support for the following languages: C, C++, Groovy, Java, JavaScript, TypeScript, Kotlin, ObjC, Ruby, Swift, Python, and Go. ...
    Downloads: 1 This Week
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  • 7
    ActivityWatch

    ActivityWatch

    Automatically tracks how you spend time on your devices

    ActivityWatch is app for tracking how you spend time on your devices that is open source, cross-platform and extensible. Focused on privacy, it is able to collect as much (or as little) valuable life data as the user prefers in a secure manner that doesn’t compromise user privacy, and gives the user complete control of the data. ActivityWatch can be used for many things: tracking time spent on different projects, managing bad screen habits, tracking productivity and more.
    Downloads: 20 This Week
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  • 8
    Django-CRM - Free Open Source  Software

    Django-CRM - Free Open Source Software

    Enterprise CRM software + Tasks management, Email marketing and more!

    Django CRM system is easy to use and can be run on a personal laptop for a private entrepreneur (for example) or on a cloud web server for a large enterprise. Written in Python, CRM is an open-source software package for managing customer interactions and sales. This free CRM software is a powerful tool designed to optimize workflows, and support data-driven decisions. Key features include role-based access control, intuitive navigation, powerful filtering, and search functionalities. The...
    Downloads: 38 This Week
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  • 9
    SatelliteToolbox.jl

    SatelliteToolbox.jl

    A toolbox for satellite analysis written in julia language

    The SatelliteToolbox.jl contains a set of packages with functions to perform analysis and build simulations related to satellites. It is used on a daily basis on projects at the Brazilian National Institute for Space Research (INPE).
    Downloads: 6 This Week
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  • 10
    AppFlowy Web

    AppFlowy Web

    Bring projects, wikis, and teams together with AI

    AppFlowy‑Web is the TypeScript/React‑based web frontend of AppFlowy, the open‑source, AI‑powered Notion alternative. Aims to deliver full parity with the desktop app, supporting self‑hosting, collaborative editing, and extensible workspace building.
    Downloads: 6 This Week
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  • 11
    Etar Calendar

    Etar Calendar

    Android open source calendar

    Etar is an open-source material-designed calendar made for everyone.
    Downloads: 16 This Week
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  • 12
    Redisson

    Redisson

    Valkey & Redis Java client. Real-Time Data Platform

    Redisson is a Java client library for Redis that offers distributed data structures, services, and frameworks to build scalable and reliable applications. It simplifies Redis usage by providing in-memory Java objects like maps, sets, locks, queues, and semaphores that are backed by Redis. Redisson supports advanced features like distributed locking, asynchronous APIs, and integrates with frameworks like Spring and Quarkus for reactive and cloud-native development.
    Downloads: 6 This Week
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  • 13
    Sylius

    Sylius

    Open source eCommerce platform on Symfony

    ...This holistic strategy unleashes your full potential and makes sure that your business adapts to the ever-changing demands of local and global commerce markets. Sylius is an Open Source Headless eCommerce Platform for mid-market and enterprise brands that need custom solutions. With a modern approach to the professional development of projects, it allows the evolution of your digital stack at the pace that beats your competitors and delivers the experience your Customers deserve. Sylius comes with a powerful REST API that can be customized and play well with the frontend of your choice or your architecture of microservices. ...
    Downloads: 8 This Week
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  • 14
    Next SEO

    Next SEO

    Next SEO is a plug in that makes managing your SEO easier in Next.js

    Next SEO is a plugin that makes managing your SEO easier in Next.js projects. Pull requests are very welcome. Also make sure to check out the issues for feature requests if you are looking for inspiration on what to add. Feel like supporting this free plugin? It takes a lot of time to maintain an open source project so any small contribution is greatly appreciated. NextSeo works by including it on pages where you would like SEO attributes to be added.
    Downloads: 7 This Week
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  • 15
    TimeTracker

    TimeTracker

    Open-source and free to self-host

    ...With support for Docker deployments and a feature set tailored to freelancers and agencies alike, TimeTracker brings professional time management workflows to open source with a polished user experience and role-based access for collaboration.
    Downloads: 26 This Week
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  • 16
    Stirling-PDF

    Stirling-PDF

    Web application that allows you to perform operations on PDF files

    Stirling PDF is a powerful, locally hosted web-based PDF manipulation tool offering a wide range of editing, conversion, and utility features. It allows users to merge, split, compress, convert, OCR, and perform other operations on PDF files directly from a browser without uploading data to third-party servers. The tool is privacy-conscious, self-hostable via Docker, and built with modularity in mind to allow future expansion and integration.
    Downloads: 40 This Week
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  • 17
    Leantime

    Leantime

    Leantime is a goals focused project management system

    Leantime is an open-source project management system designed to support idea management, task tracking, and project planning. It is a tool for startups and small teams looking for a lean project management approach. Leantime combines features like kanban boards, Gantt charts, and time tracking with a modern, intuitive interface, making it easy for teams to collaborate efficiently and keep projects on track.
    Downloads: 7 This Week
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  • 18
    Joda-Time

    Joda-Time

    Replacement for the Java date and time classes prior to Java SE 8

    The standard date and time classes prior to Java SE 8 are poor. By tackling this problem head-on, Joda-Time became the de facto standard date and time library for Java prior to Java SE 8. Note that from Java SE 8 onwards, users are asked to migrate to java.time (JSR-310) - a core part of the JDK which replaces this project. The design allows for multiple calendar systems, while still providing a simple API. The “default” calendar is the ISO8601 standard which is used by many other standards....
    Downloads: 5 This Week
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  • 19
    JobRunr

    JobRunr

    An extremely easy way to perform background processing in Java

    Incredibly easy way to perform fire-and-forget, delayed, scheduled and recurring jobs inside Java applications using only Java 8 lambda's. CPU and I/O intensive, long-running and short-running jobs are supported. Persistent storage is done via either RDBMS (e.g. Postgres, MariaDB/MySQL, Oracle, SQL Server, DB2 and SQLite) or NoSQL (ElasticSearch, MongoDB and Redis). JobRunr provides a unified programming model to handle background tasks in a reliable way and runs them on shared hosting,...
    Downloads: 7 This Week
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  • 20
    Reactor Core

    Reactor Core

    Non-Blocking Reactive Foundation for the JVM

    Reactor Core is a foundational library for building reactive applications in Java, providing a powerful API for asynchronous, non-blocking programming.
    Downloads: 7 This Week
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  • 21
    Portfolio Performance

    Portfolio Performance

    Track and evaluate the performance of your investment portfolio

    Portfolio Performance: Track and evaluate the performance of your investment portfolio across stocks, cryptocurrencies, and other assets. Performance indicators like that True-Time Weighted Rate of Return or the internal rate of return ( Internal rate of return ) are calculated. Historical courses are automatically run by Yahoo Finance loaded or can be extracted from any HTML pages. Due to the open file format, all data is available as XML available or can be used as CSV be exported. Support...
    Downloads: 36 This Week
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  • 22
    JavaCall.jl

    JavaCall.jl

    Call Java from Julia

    Call Java programs from Julia. Julia 1.3.0 through Julia 1.6.2 are tested and guaranteed to work on Linux, macOS, and Windows via continuous integration. Julia 1.6.2 and newer should work on Linux and Windows. The JULIA_COPY_STACKS environment variable should be set to 1 on macOS and Linux, but not Windows.
    Downloads: 8 This Week
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  • 23
    Nano ID

    Nano ID

    A secure, URL-friendly, unique string ID generator for JavaScript

    Nano ID is a library for generating random IDs. Likewise UUID, there is a probability of duplicate IDs. However, this probability is extremely small. Meanwhile, a lot of projects generate IDs in small numbers. For those projects, the ID length could be reduced without risk. This calculator aims to help you realize the extent to which the ID length can be reduced. Instead of using the unsafe Math.random(), Nano ID uses the crypto module in Node.js and the Web Crypto API in browsers. These...
    Downloads: 6 This Week
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  • 24
    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: 18 This Week
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  • 25
    reticulate

    reticulate

    R Interface to Python

    reticulate is an R package from Posit that creates seamless interoperability between R and Python. It lets you call Python modules, classes, and functions from within R, automatically translating between R and Python data structures. Useful for combining Python tooling with R projects, data analysis, and RMarkdown reports.
    Downloads: 0 This Week
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