Open Source Windows Internet Software

Internet Software for Windows

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Browse free open source Internet software and projects for Windows 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
    KeePass

    KeePass

    A lightweight and easy-to-use password manager

    KeePass Password Safe is a free, open source, lightweight, and easy-to-use password manager for Windows, Linux and Mac OS X, with ports for Android, iPhone/iPad and other mobile devices. With so many passwords to remember and the need to vary passwords to protect your valuable data, it’s nice to have KeePass to manage your passwords in a secure way. KeePass puts all your passwords in a highly encrypted database and locks them with one master key or a key file. As a result, you only have to remember one single master password or select the key file to unlock the whole database. And the databases are encrypted using the best and most secure encryption algorithms currently known, AES and Twofish. See our features page for details.
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    Downloads: 442,532 This Week
    Last Update:
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  • 2
    XAMPP

    XAMPP

    An easy to install Apache distribution containing MySQL, PHP, and Perl

    XAMPP is a very easy to install Apache Distribution for Linux, Solaris, Windows, and Mac OS X. The package includes the Apache web server, MySQL, PHP, Perl, a FTP server and phpMyAdmin.
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    Downloads: 402,808 This Week
    Last Update:
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  • 3
    PortableApps.com

    PortableApps.com

    Portable software for cloud, local, and portable USB drives

    PortableApps.com is the world's most popular portable software solution allowing you to take your favorite software with you. A fully open source and free platform, it works from any synced cloud folder (DropBox, Google Drive, Box, etc), from your local PC on an internal or external drive, or on any portable storage device (USB flash drive, memory card, portable SSD or hard drive, etc) moved between PCs. With millions of users all over the world, nearly 500 real open source and freeware apps in our main app store (no shovelware), compatible commercial software, and partners in hardware industry, PortableApps.com is the most complete solution for life on the go.
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    Downloads: 349,769 This Week
    Last Update:
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  • 4
    WinSCP

    WinSCP

    WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.

    WinSCP is a popular free file manager for Windows supporting SFTP, FTP, FTPS, SCP, S3, WebDAV and local-to-local file transfers. A powerful tool to enhance your productivity with a user-friendly interface and automation options like .NET assembly or batch file scripting. Use WinSCP also for file editing, directory synchronization and site management. WinSCP is open-source and well documented. It is available in English and many other languages.
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    Downloads: 204,042 This Week
    Last Update:
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  • 5
    Safe Exam Browser
    Safe Exam Browser is a webbrowser-environment to carry out online-exams safely. The software changes any computer into a secure workstation. It regulates the access to any utilities and prevents students from using unauthorised resources.
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    Downloads: 172,655 This Week
    Last Update:
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  • 6
    GeoServer
    GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. Designed for interoperability, it publishes data from any major spatial data source using open standards: WMS, WFS, WCS, WPS and REST
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    Downloads: 51,061 This Week
    Last Update:
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  • 7
    Anti-Spam SMTP Proxy Server

    Anti-Spam SMTP Proxy Server

    Anti-Spam SMTP Proxy Server implements multiple spam filters

    The Anti-Spam SMTP Proxy (ASSP) Server project aims to create an open source platform-independent SMTP Proxy server which implements auto-whitelists, self learning Hidden-Markov-Model and/or Bayesian, Greylisting, DNSBL, DNSWL, URIBL, SPF, SRS, Backscatter, Virus scanning, attachment blocking, Senderbase and multiple other filter methods. Click 'Files' to download the professional version 2.8.1 build 24261. A linux(ubuntu 20.04 LTS) and a freeBSD 12.2 based ready to run OVA of ASSP V2 are also available for download. NOTICE: V1 development has been stopped at the end of 2014 (1.10.1 build 16060). Possibly there will be done some bugfixing in future. Please upgrade to V2, which is and will be actively maintained.
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    Downloads: 37,985 This Week
    Last Update:
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  • 8
    TG WS Proxy

    TG WS Proxy

    Local MTProto proxy server for partial bypassing of Telegram loading

    TG WS Proxy is a lightweight proxy server designed to enable Telegram connectivity over WebSocket, particularly in environments where direct access to Telegram servers is restricted. It allows Telegram clients to communicate through alternative transport layers, bypassing network limitations or censorship mechanisms. The project focuses on simplicity and efficiency, providing a minimal setup that can be deployed quickly on various platforms. It supports secure communication and can be integrated into existing proxy infrastructures. The tool is particularly useful in regions with network restrictions, enabling continued access to Telegram services. It also offers flexibility in configuration, allowing users to adapt it to different network conditions.
    Downloads: 7,169 This Week
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  • 9
    Tcl

    Tcl

    The Tool Command Language implementation

    Tool Command Language (Tcl) is an interpreted language and very portable interpreter for that language. Tcl is embeddable and extensible, and has been widely used since its creation in 1988 by John Ousterhout. Bug reports to http://core.tcl.tk/tcl/ Follow code development at http://core.tcl.tk/tcl/
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    Downloads: 23,601 This Week
    Last Update:
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  • 10
    net-snmp
    Net-SNMP provides tools and libraries relating to the Simple Network Management Protocol including: An extensible agent, an SNMP library, tools to request or set information from SNMP agents, tools to generate and handle SNMP traps, etc.
    Leader badge
    Downloads: 23,267 This Week
    Last Update:
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  • 11
    V2Ray

    V2Ray

    V2Ray is a set of tools for building your own private network

    Project V is a set of tools to help you build your own privacy network over internet. The core of Project V, named V2Ray, is responsible for network protocols and communications. It can work alone, as well as combine with other tools.
    Downloads: 3,775 This Week
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  • 12
    v2rayN

    v2rayN

    A V2Ray GUI client for Windows, Linux and macOS

    A V2Ray client for Windows, Linux and macOS, supports Xray core and v2fly core. If you are new to this, please download v2rayN-Core.zip from releases. Otherwise please download v2rayN.zip (you will also need to download v2ray core into the same folder with v2rayN.exe) Run v2rayN.exe.
    Downloads: 3,196 This Week
    Last Update:
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  • 13
    WampServer

    WampServer

    A Windows Web development environment for Apache, MySQL, PHP databases

    WampServer is a Web development platform on Windows that allows you to create dynamic Web applications with Apache2, PHP, MySQL and MariaDB. WampServer automatically installs everything you need to intuitively develope Web applications. You will be able to tune your server without even touching its setting files. Best of all, WampServer is available for free (under GPML license) in both 32 and 64 bit versions. Wampserver is not compatible with Windows XP, SP3, or Windows Server 2003.
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    Downloads: 15,663 This Week
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  • 14
    Amnezia VPN

    Amnezia VPN

    Amnezia VPN Client (Desktop+Mobile)

    Amnezia is an open-source VPN client, with a key feature that enables you to deploy your own VPN server on your server.
    Downloads: 2,020 This Week
    Last Update:
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  • 15
    NetMod VPN Client (V2Ray/SSH)
    NetMod is a free, advanced VPN client and set of network tool, offering VPN protocols including SSH, HTTP(S), Socks, VMess, VLess, Trojan, Shadowsocks, ShadowsocksR, DNSTT, OpenVPN. unblock the internet censorship and stay anonymous online. Any question related to project can be asked in here: https://www.facebook.com/NetModSyna/ netmodsyna@gmail.com Telegram: https://t.me/netmod_vpn_channel Get Android version: https://play.google.com/store/apps/details?id=com.netmod.syna NetMod may be used free of charge, but if you wish to express your appreciation for the time and resources the authors have expended developing and supporting it over the years, we do accept and appreciate donations. Click the following links to donate. Thank you! https://www.paypal.com/paypalme/NetModSyna https://buymeacoffee.com/netmod https://trakteer.id/netmod/tip
    Leader badge
    Downloads: 7,345 This Week
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  • 16
    WireGuard for Windows

    WireGuard for Windows

    Fully-featured WireGuard client for Windows

    WireGuard for Windows is the official full-featured WireGuard client for Microsoft Windows, built to provide native VPN functionality using the high-performance WireGuardNT kernel driver. The application delivers an integrated graphical and service-based experience that aligns with standard Windows networking, access control, and service management capabilities. It is the recommended method for running WireGuard on Windows systems and supports modern versions of the operating system across multiple CPU architectures. The client simplifies secure tunnel setup through key-based configuration while leveraging WireGuard’s streamlined cryptographic design for performance and reliability. Its architecture tightly integrates with the Windows networking stack to provide efficient packet handling and stable connections. The project is intended for both enterprise and individual users who require a secure, modern VPN solution on Windows platforms.
    Downloads: 1,549 This Week
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  • 17
    JavDB

    JavDB

    javdb official app

    JavDB is an open-source mobile application designed as an official client for browsing and interacting with the JavDB platform, providing users with a streamlined interface for accessing and managing content from the associated database. The project focuses on delivering a dedicated app experience rather than relying on web browsing, allowing for improved navigation, performance, and usability on mobile devices. It includes distribution options through various channels such as direct downloads, third-party installers, and release builds, making it accessible across different user environments. The application is relatively lightweight and centered around providing quick access to indexed content, metadata, and media listings available on the platform. Its development is maintained through a GitHub repository with ongoing releases and updates, indicating active iteration and refinement.
    Downloads: 1,389 This Week
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  • 18
    Tor Browser

    Tor Browser

    Browser for using Tor on Windows, Mac OS X or Linux

    Tor Browser enables you to use Tor on Windows, Mac OS X, or Linux without needing to install any software. Tor is a software that bounces your communications around a distributed network of relays run by volunteers. This effectively prevents anyone watching your Internet connection from learning what sites you visit; it prevents the sites you visit from learning your physical location; and allows you access to sites which are blocked. Tor Browser can run off a USB flash drive, comes with a pre-configured web browser to protect your anonymity, and is self-contained (portable).
    Downloads: 1,313 This Week
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  • 19
    Karing

    Karing

    Simple & Powerful proxy utility

    Karing is a powerful, rule-based cross-platform proxy utility built with Flutter, supporting Clash, Sing-box, V2Ray, Shadowsocks, and more. It features customizable routing rules, geo-IP/site filtering, ACLs, multi-device sync via iCloud, LAN, WebDAV, and ZIP import/export. It supports a wide range of subscription sources and platforms including iOS, Android, macOS, Windows, and tvOS.
    Downloads: 1,190 This Week
    Last Update:
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  • 20
    Double Commander
    Double Commander is a cross platform open source file manager with two panels side by side. It is inspired by Total Commander and features some new ideas.
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    Downloads: 5,097 This Week
    Last Update:
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  • 21
    Proton VPN Windows App

    Proton VPN Windows App

    Official ProtonVPN Windows app

    The ProtonVPN Windows app project hosts the official open-source client software that lets users securely connect their Windows machines to the ProtonVPN service with full system-wide VPN protection. It includes a modern GUI built with .NET and WPF that lets users authenticate, choose VPN servers, and configure features like split tunneling or kill switch, while a background Windows service manages VPN connections using the OpenVPN protocol and handles networking tasks such as firewall and adapter configuration. The app integrates a custom TAP driver and a split tunnel callout driver to help route traffic securely and prevent leaks, and is structured so the GUI and service components work together to deliver a smooth user experience on Windows desktops and laptops. ProtonVPN’s Windows client supports both free and paid users with access to Proton’s global server network, encrypted tunnels, and privacy-first policies that block logging and respect user anonymity.
    Downloads: 1,117 This Week
    Last Update:
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  • 22
    Sherlock

    Sherlock

    Hunt down social media accounts by username across social networks

    Hunt down social media accounts by username across 400+ social networks.
    Downloads: 1,072 This Week
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  • 23
    log4cplus

    log4cplus

    Logging Framework for C++

    log4cplus is a simple to use C++ logging API providing thread-safe, flexible, and arbitrarily granular control over log management and configuration. It is modelled after the Java log4j API.
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    Downloads: 6,044 This Week
    Last Update:
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  • 24
    NekoBox for PC (NekoRay)

    NekoBox for PC (NekoRay)

    Qt based cross-platform GUI proxy configuration manager

    NekoBox for PC is a Qt-based, cross-platform proxy configuration manager designed for Windows and Linux systems. It provides a user-friendly graphical interface for managing advanced proxy and tunneling configurations using the sing-box backend. NekoBox supports a wide range of modern proxy protocols, making it suitable for users who need flexible and powerful network routing options. The application offers portable builds that run without installation, allowing quick setup and easy deployment. With support for subscription-based configurations and custom cores, it caters to both casual users and advanced networking enthusiasts. Although the project has been archived and is no longer actively maintained, NekoBox for PC remains a popular and capable tool for managing complex proxy setups.
    Downloads: 979 This Week
    Last Update:
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  • 25
    hiddify-app

    hiddify-app

    Multi-platform auto-proxy client, supporting Sing-box, X-ray, TUIC

    Hiddify is a comprehensive VPN and proxy client designed to facilitate secure internet access and bypass censorship. It supports advanced proxy protocols like V2Ray, Shadowsocks, and Trojan, offering configuration through QR codes, links, and subscription services. Hiddify aims to be user-friendly while also catering to power users with customizable options, making it a popular choice in regions with restricted internet access.
    Downloads: 901 This Week
    Last Update:
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