Showing 42469 open source projects for "java open source"

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  • Automate contact and company data extraction Icon
    Automate contact and company data extraction

    Build lead generation pipelines that pull emails, phone numbers, and company details from directories, maps, social platforms. Full API access.

    Generate leads at scale without building or maintaining scrapers. Use 10,000+ ready-made tools that handle authentication, pagination, and anti-bot protection. Pull data from business directories, social profiles, and public sources, then export to your CRM or database via API. Schedule recurring extractions, enrich existing datasets, and integrate with your workflows.
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  • 1
    RoaringBitmap

    RoaringBitmap

    A better compressed bitset in Java

    Bitsets, also called bitmaps, are commonly used as fast data structures. Unfortunately, they can use too much memory. To compensate, we often use compressed bitmaps. Roaring bitmaps are compressed bitmaps which tend to outperform conventional compressed bitmaps such as WAH, EWAH or Concise. In some instances, roaring bitmaps can be hundreds of times faster and they often offer significantly better compression. They can even be faster than uncompressed bitmaps.
    Downloads: 2 This Week
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  • 2
    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: 1 This Week
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  • 3
    Spotless

    Spotless

    Keep your code spotless

    Spotless is a tool for formatting and enforcing consistent code style in various languages, streamlining code quality across teams.
    Downloads: 0 This Week
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  • 4
    Kotlin Compile Testing

    Kotlin Compile Testing

    Testing Kotlin and Java annotation processors, compiler plugins

    A library for in-process compilation of Kotlin and Java code, in the spirit of Google Compile Testing. For example, you can use this library to test your annotation processor or compiler plugin.
    Downloads: 0 This Week
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  • eProcurement Software Icon
    eProcurement Software

    Enterprises and companies seeking a solution to manage all their procurement operations and processes

    eBuyerAssist by Eyvo is a cloud-based procurement solution designed for businesses of all sizes and industries. Fully modular and scalable, it streamlines the entire procurement lifecycle—from requisition to fulfillment. The platform includes powerful tools for strategic sourcing, supplier management, warehouse operations, and contract oversight. Additional modules cover purchase orders, approval workflows, inventory and asset management, customer orders, budget control, cost accounting, invoice matching, vendor credit checks, and risk analysis. eBuyerAssist centralizes all procurement functions into a single, easy-to-use system—improving visibility, control, and efficiency across your organization. Whether you're aiming to reduce costs, enhance compliance, or align procurement with broader business goals, eBuyerAssist helps you get there faster, smarter, and with measurable results.
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  • 5
    Elide

    Elide

    Elide is a Java library that lets you stand up a GraphQL/JSON-API

    Model-driven {json:api} & GraphQL web services for CRUD and Analytics. Elide is a Java library that enables you to stand up JSON API or GraphQL web services in 4 simple steps. Define a JPA annotated model including relationships to other models using Java, Kotlin, Groovy, and other JVM languages. Control access to fields and entities through a declarative, intuitive permission syntax. Make instances of your new model accessible through a top level collection or restrict access only through...
    Downloads: 1 This Week
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  • 6
    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: 2 This Week
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  • 7
    JBake

    JBake

    Java based open source static site/blog generator for developers

    JBake is a Java-based, open source, static site/blog generator for developers & designers. The project uses Gradle 4.9+ as the build system. We configured the gradle check style Plugin to run with the check task. It does not break the build if convention violations are found. But prints a warning and generates a report. Source available on GitHub, licensed under MIT License.
    Downloads: 1 This Week
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  • 8
    Gitblit

    Gitblit

    pure java git solution

    Gitblit is an open-source, pure Java stack for managing, viewing, and serving Git repositories. It's designed primarily as a tool for small workgroups who want to host centralized repositories. Gitblit GO is an integrated, single-stack solution based on Jetty. You do not need Apache httpd, Perl, Git, or Gitweb. Should you want to use some or all of those, you still can; Gitblit plays nice with the other kids on the block.
    Downloads: 2 This Week
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  • 9
    Continuation of Clash Verge

    Continuation of Clash Verge

    Continuation of Clash Verge - A Clash Meta GUI based on Tauri

    Continuation of Clash Verge - A Clash Meta GUI based on Tauri (Windows, MacOS, Linux).
    Downloads: 220 This Week
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  • Turn more customers into advocates. Icon
    Turn more customers into advocates.

    Fight skyrocketing paid media costs by turning your customers into a primary vehicle for acquisition, awareness, and activation with Extole.

    The platform's advanced capabilities ensure companies get the most out of their referral programs. Leverage custom events, profiles, and attributes to enable dynamic, audience-specific referral experiences. Use first-party data to tailor customer segment messaging, rewards, and engagement strategies. Use our flexible APIs to build management capabilities and consumer experiences–headlessly or hybrid. We have all the tools you need to build scalable, secure, and high-performing referral programs.
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  • 10
    Spring for GraphQL

    Spring for GraphQL

    Spring Integration for GraphQL

    Spring for GraphQL provides support for Spring applications built on GraphQL Java. It is a joint collaboration between the GraphQL Java team and Spring engineering. Our shared philosophy is to provide as little opinion as we can while focusing on comprehensive support for a wide range of use cases. Spring for GraphQL is the successor of the GraphQL Java Spring project from the GraphQL Java team. It aims to be the foundation for all Spring, GraphQL applications. The project reached version...
    Downloads: 0 This Week
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  • 11
    Netty-socketio

    Netty-socketio

    Socket.IO server implemented on Java

    ...YourKit is kindly supporting this open source project with its full-featured Java Profiler. YourKit, LLC is the creator of innovative and intelligent tools for profiling Java and .NET applications. CentOS, 1 CPU, 4GB RAM runned on VM, CPU 10%, Memory 15%, 6000 xhr-long polling sessions or 15000 websockets sessions, 4000 messages per second.
    Downloads: 0 This Week
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  • 12
    HappyX

    HappyX

    Macro-oriented asynchronous web-framework written in Nim

    HappyX is a macro-oriented asynchronous web framework written in Nim, facilitating the development of web applications with a focus on performance and ease of use.
    Downloads: 1 This Week
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  • 13
    Theia

    Theia

    Cloud & Desktop IDE Platform

    ...It supports VS code extensions, and is completely open source and vendor neutral.
    Downloads: 11 This Week
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  • 14
    CodeGuide

    CodeGuide

    This repository is a collection of the author, Xiao Fuge

    CodeGuide is a curated collection of Java development resources built from years of real-world engineering experience by the author, who has worked extensively in large-scale internet companies. The project serves as a structured and comprehensive learning path for developers who want to strengthen their understanding of Java fundamentals and core programming practices. It includes detailed explanations of design patterns, source code analysis, frameworks, algorithms, and real-world project cases. ...
    Downloads: 2 This Week
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  • 15
    Certificate Ripper

    Certificate Ripper

    A CLI tool to extract server certificates

    A CLI tool to extract server certificates. No openssl required runs on any Operating System. It can be used with or without Java, native executables are present in the releases. Extracts all the sub-fields of the certificate. Certificates can be formatted to PEM format. Bulk extraction of multiple different URLs with a single command is possible. Extracted certificates can be stored automatically in a p12 trust store. Works also behind a proxy.
    Downloads: 1 This Week
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  • 16
    Central Authentication Service (CAS)

    Central Authentication Service (CAS)

    Identity & Single Sign On for all earthlings and beyond

    ...CAS is an enterprise multilingual single sign-on solution and identity provider for the web and attempts to be a comprehensive platform for your authentication and authorization needs. CAS is an open and well-documented authentication protocol. The primary implementation of the protocol is an open-source Java server component by the same name hosted here, with support for a plethora of additional authentication protocols and features. Monitor and track application and system behavior, statistics and metrics in real-time. Manage and review audits and logs centrally, and publish data to a variety of downstream systems. ...
    Downloads: 2 This Week
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  • 17
    ConnectBot

    ConnectBot

    ConnectBot is the first SSH client for Android

    ...Its ultimate goal is to create a secure connection through which you can use a shell on a remote machine and transfer files back and forth to your phone. ConnectBot is a powerful open source SSH (Secure Shell) client. It can handle several simultaneous sessions, create secure connections in tunnel mode and allows Copy/Paste from other applications. This client allows you to connect to SSH (Secure Shell) servers that typically include UNIX-based servers.
    Downloads: 5 This Week
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  • 18
    Fetch for Android

    Fetch for Android

    The best file downloader library for Android

    Fetch is a simple, powerful, customizable file download manager library for Android. Simple and easy to use API. If you are saving downloads outside of your application's sandbox, you will need to add the following storage permissions to your application's manifest. For Android SDK version 23(M) and above, you will also need to explicitly request these permissions from the user. Continuous downloading in the background. Concurrent downloading support. Ability to pause and resume downloads....
    Downloads: 7 This Week
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  • 19
    Zeebe

    Zeebe

    Distributed Workflow Engine for Microservices Orchestration

    Automate processes at scale with unprecedented performance and resilience. Zeebe is the workflow and decision engine that powers Camunda Platform 8. Zeebe’s cloud-native design provides the performance, resilience, and security enterprises need to future-proof their process orchestration efforts. Zeebe distributes data across all brokers in a cluster with storage directly on the server filesystem. If one broker goes down, another can replace it with no data loss. This pre-configured...
    Downloads: 5 This Week
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  • 20
    jte

    jte

    Secure and speedy templates for Java and Kotlin.

    jte (Java Template Engine) is a secure and lightweight template engine for Java and Kotlin. jte is designed to introduce as few new keywords as possible and build upon existing language features, making it straightforward to reason about what a template does. The IntelliJ plugin offers full completion and refactoring support for Java parts and jte keywords.
    Downloads: 0 This Week
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  • 21
    Bytecoder

    Bytecoder

    Framework to interpret and transpile JVM bytecode to JavaScript

    Bytecoder is a Rich Domain Model for Java Bytecode and Framework to interpret and transpile it to other languages such as JavaScript, OpenCL or WebAssembly. The JVM Bytecode is parsed and transformed into an intermediate representation. This intermediate representation is passed thru optimizer stages and sent to a backend implementation for target code generation. The JavaScript backend transforms the intermediate representation into JavaScript.
    Downloads: 0 This Week
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  • 22
    Brave

    Brave

    Java distributed tracing implementation compatible with Zipkin backend

    Brave is a distributed tracing instrumentation library. Brave typically intercepts production requests to gather timing data, correlate and propagate trace contexts. 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...
    Downloads: 2 This Week
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  • 23
    pushy

    pushy

    A Java library for sending APNs (iOS/macOS/Safari)

    Pushy is a Java library for sending APNs (iOS, macOS, and Safari) push notifications. Pushy sends push notifications using Apple’s HTTP/2-based APNs protocol and supports both TLS and token-based authentication. It distinguishes itself from other push notification libraries with a focus on thorough documentation, asynchronous operation, and design for industrial-scale operation. With Pushy, it’s easy and efficient to maintain multiple parallel connections to the APNs gateway to send large...
    Downloads: 1 This Week
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  • 24
    SpotBugs

    SpotBugs

    A tool for static analysis to look for bugs in Java code

    SpotBugs is a program that uses static analysis to look for bugs in Java code. It is free software, distributed under the terms of the GNU Lesser General Public License. SpotBugs is a fork of FindBugs (which is now an abandoned project), carrying on from the point where it left off with the support of its community. Please check the official manual for details. SpotBugs requires JRE (or JDK) 1.8.0 or later to run. However, it can analyze programs compiled for any version of Java, from 1.0 to...
    Downloads: 1 This Week
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  • 25
    OneDev

    OneDev

    Git Server with CI/CD, Kanban, and Packages

    OneDev is a comprehensive Git server that combines source code management with built-in CI/CD, issue tracking, and project management tools. It offers an intuitive GUI for creating CI/CD jobs, supports versatile executors, and provides features like code search and navigation. OneDev aims to deliver a seamless integration experience for development teams.
    Downloads: 2 This Week
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