Browse free open source Internet software and projects for Windows and ChromeOS below. Use the toggles on the left to filter open source Internet software by OS, license, language, programming language, and project status.

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  • 1

    DNS2SOCKS

    DNS to SOCKS or HTTP proxy

    This is a command line utility to resolve DNS requests via a SOCKS tunnel like Tor or a HTTP proxy.
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    Downloads: 6,372 This Week
    Last Update:
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  • 2
    HyperSQL Database Engine (HSQLDB)
    HSQLDB is a relational database engine written in Java, with a JDBC driver, conforming to ANSI SQL:2023. A small, fast, multithreaded engine and server with memory and disk tables, LOBs, transaction isolation, multiversion concurrency and ACID.
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    Downloads: 469 This Week
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  • 3
    Barbecue is a Java library that enables the creation of barcodes in a variety of standard formats that can be displayed as Swing/AWT components, included in printed output, generated as EPS and SVG and displayed in a web application.
    Downloads: 26 This Week
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  • 4
    udt
    UDT: UDP-based Data Transfer Protocol
    Downloads: 28 This Week
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  • 5

    PyLoris

    A protocol agnostic application layer denial of service attack.

    PyLoris is a scriptable tool for testing a server's vulnerability to connection exhaustion denial of service (DoS) attacks. PyLoris can utilize SOCKS proxies and SSL connections, and can target protocols such as HTTP, FTP, SMTP, IMAP, and Telnet.
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    Downloads: 32 This Week
    Last Update:
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  • 6
    The Lemur Project

    The Lemur Project

    Search engine and data mining applications and ClueWeb datasets.

    The Lemur Project develops search engines, browser toolbars, text analysis tools, and data resources that support research and development of information retrieval and text mining software, including the Indri search engine in C++, the Galago search engine research framework in Java, the RankLib learning to rank library, ClueWeb09 and ClueWeb12 datasets and the Sifaka data mining application.
    Downloads: 19 This Week
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  • 7
    The stuff here has no documentation and some of it may never be completed. This is my playground, use at your own risk.
    Downloads: 18 This Week
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  • 8
    Silverstripe CMS

    Silverstripe CMS

    Silverstripe CMS - this is a module for Silverstripe Framework

    Silverstripe CMS is an intuitive content management system and flexible framework loved by editors and developers alike. Equip your web teams to achieve outstanding results. Silverstripe CMS fits the outcomes you want and doesn't force your business outcomes into an out-of-the-box solution. Customize to your needs. You can be the CMS expert in no time. Get started quickly and deliver your content to your users fast. Don’t stay awake at night worrying! Silverstripe CMS is solid as a rock, with enterprise-level security and support, so you can rest easy. Collaboration from our global army of community members and commercially supported by Silverstripe.
    Downloads: 3 This Week
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  • 9
    TinyScheme

    TinyScheme

    A tiny Scheme interpreter for embedding in programs.

    TinyScheme is a Scheme interpreter that can execute Scheme code but is also suitable for embedding in programs. The goal is to keep the interpreter small while providing as much compatability with Scheme standards as possible.
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    Downloads: 80 This Week
    Last Update:
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    AppSignal installs in minutes and auto-configures dashboards, alerts, and error tracking.

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  • 10
    gocrawl

    gocrawl

    Polite concurrent web crawler library for Go with flexible hooks

    gocrawl is a lightweight web crawling library written in the Go programming language that enables developers to build custom web crawlers and data extraction tools. gocrawl focuses on providing a minimal yet powerful crawling engine that can be easily extended and adapted for different web scraping or indexing tasks. It is designed to be polite when accessing websites by respecting crawling rules such as robots.txt policies and applying crawl delays for each host. It executes requests concurrently using Go’s goroutines, allowing efficient and scalable page retrieval across multiple URLs. Developers have full control over the crawling workflow, including which URLs are visited, inspected, and processed during execution. gocrawl integrates with HTML parsing tools so responses can be inspected and queried in a structured way while crawling. Instead of implementing a full search indexing pipeline, the library provides the core crawling engine and extension hooks.
    Downloads: 2 This Week
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  • 11
    pspider

    pspider

    Simple Python framework for building multithreaded web crawlers

    PSpider is a lightweight web crawling framework written in Python designed to simplify the development of custom web spiders. It focuses on providing an easy-to-understand architecture while still supporting concurrent crawling for improved performance. It uses a multithreaded model that separates the crawling workflow into several components responsible for fetching, parsing, and saving data. Tasks are managed through queues, allowing different parts of the crawler to process work asynchronously and efficiently. PSpider defines a set of modules and utility classes that help developers manage crawling tasks, filter URLs, and process scraped content. By organizing crawling tasks into structured stages, PSpider allows developers to build scalable spiders while keeping the codebase relatively compact and readable. Its modular design also makes it easier to extend the framework with additional features or integrate it into existing Python projects.
    Downloads: 2 This Week
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  • 12
    PDFBox is a Java PDF Library. This project will allow access to all of the components in a PDF document. More PDF manipulation features will be added as the project matures. This ships with a utility to take a PDF document and output a text file.
    Downloads: 11 This Week
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  • 13
    JAMon API

    JAMon API

    Monitor Java applications - SQL, HTTP, Methods, Exceptions and more.

    JAMon API is a free, simple, high performance, thread safe, Java API that allows developers to easily monitor the performance and scalability of production applications. JAMon tracks hits, execution times (total, avg, min, max, std dev), and more. * JAMon Users Manual: For more on the JAMon, including installing, configuring, and using it, see http://jamonapi.sourceforge.net/. * Support: If you have any questions about usage please post a question on the forum at http://sourceforge.net/projects/jamonapi/forums/forum/334830
    Downloads: 17 This Week
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  • 14
    WackoWiki

    WackoWiki

    WackoWiki is a light and easy to install multilingual Wiki-engine.

    WackoWiki is a light and easy to install multilingual Wiki-engine. Supports WYTIWYG-editing, page rights (ACLs), design themes (skins), file upload, email notification and much more. Compatible with PHP 8.0 - 8.5 and MariaDB / MySQL / SQLite.
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    Downloads: 14 This Week
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  • 15
    Here is EditArea, a free javascript editor for source code. It allow to write well formated source code with line numerotation, tab support, search & replace (with regexp) and live syntax highlighting (customizable). Warning: this project is no more supported
    Downloads: 6 This Week
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  • 16
    The goal of this project is to build a configuration manager in Java that works with xml files, an URL or a LDAP repository to read the configuration properties. MBean / JBoss support is now available.
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    Downloads: 34 This Week
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  • 17
    Scrapling

    Scrapling

    An adaptive Web Scraping framework

    Scrapling is an adaptive web scraping framework designed to handle everything from a single HTTP request to large-scale, concurrent crawls. Built for modern websites, it intelligently adapts to structural changes by automatically relocating elements when page layouts update. The framework includes advanced fetchers capable of bypassing anti-bot protections such as Cloudflare Turnstile using stealth and browser automation techniques. Its powerful spider system supports multi-session crawling, pause and resume functionality, and real-time streaming of scraped data. Scrapling combines high performance, memory efficiency, and extensive async support to deliver blazing-fast scraping workflows. With a developer-friendly API, CLI tools, MCP server integration for AI-assisted extraction, and Docker support, it offers a complete solution for modern web scrapers.
    Downloads: 1 This Week
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  • 18
    basE91 is an advanced method for encoding binary data as ASCII characters. It is similar to UUencode or base64, but is more efficient. The overhead produced by basE91 depends on the input data. It amounts at most to 23% and can range down to 14%.
    Downloads: 21 This Week
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  • 19
    PyTables - Hierarchical datasets
    The goal of PyTables is to enable the end user to efficiently and easily manipulate large datasets (both homogenous, i.e. arrays, and heterogenous, i.e. tables) on a persistent, hierarchical way.
    Downloads: 3 This Week
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  • 20
    Betty is a versatile and configurable betting Web site that you can install in your own network. It enables you to make friendly bets / forecasts between colleagues or friends. Current championships: RBS 6 Nations Rugby 2009, FIA Formula 1 2009.
    Downloads: 12 This Week
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  • 21
    Simple Remoting for Web Applications
    Downloads: 2 This Week
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  • 22
    scponly is an alternative 'shell' (of sorts) for system administrators who would like to provide access to remote users to both read and write local files without providing any remote execution priviledges.
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    Downloads: 14 This Week
    Last Update:
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  • 23
    huhamhire-hosts

    huhamhire-hosts

    hosts for Internet Freedom

    Since the governments of some countries are using the blocking the internet access to several websites and web service providers which includes some world famous sites like Google, YouTube, twitter, Facebook, and Wikipedia etc., we designed this tiny utility in order to help people getting through the Internet blockade. Hosts Setup Utility provides basic tools to manage the hosts file on current operating systems. It also provides both support for Graphical Desktop environment with Graphical User Interface (GUI) and CLI environment with Text-based User Interface (TUI). Users could use these tool to modify the hosts to visit specified websites or services blocked by ISP/government. Functions which help users to backup/restore hosts files are also provided. For more detailed information, please visit the website of this project.
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    Downloads: 11 This Week
    Last Update:
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  • 24
    A modern, portable CGI library written in standard C++. Asynchronous CGI and FastCGI are both supported in a clear, simple and efficient library built upon the Boost C++ libraries (esp. Boost.Asio). Free and commercial support available on request.
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    Downloads: 6 This Week
    Last Update:
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  • 25
    xajax is an open source PHP and Javascript library that allows you to easily create powerful Ajax enabled web applications using PHP, HTML, CSS and Javascript. Update web page content asynchronously with simple Javascript calls to access your PHP cod
    Downloads: 3 This Week
    Last Update:
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