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

  • Build Agents and Models on One Platform Icon
    Build Agents and Models on One Platform

    Everything you need to build production-ready agents and models. Access 200+ Google and third-party AI models and tools.

    Gemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
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  • Build Securely on AWS with Proven Frameworks Icon
    Build Securely on AWS with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
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  • 1
    Cowboy

    Cowboy

    Small, fast, modern HTTP server for Erlang/OTP

    Cowboy is a small, fast, modern HTTP server for Erlang and OTP applications. It provides a complete HTTP stack while keeping the codebase compact and optimized for low latency and low memory usage. Cowboy supports routing, request dispatching, HTTP handlers, REST handlers, WebSocket connections, and long-lived streaming-style interactions. Because it uses Ranch for connection management, it can be embedded directly inside larger Erlang systems rather than deployed only as a separate web server. The project is well suited for real-time systems, APIs, messaging infrastructure, telecom-style applications, and fault-tolerant services that benefit from the Erlang runtime. Cowboy is a strong choice when developers need an efficient HTTP layer that fits naturally into actor-based, concurrent Erlang architectures.
    Downloads: 9 This Week
    Last Update:
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  • 2
    sushii-image-server

    sushii-image-server

    Web server made with Koa and puppeteer to convert HTML to images

    Simple local web server made with Express and Puppeteer to generate images for sushi-bot. The static directory can be used to serve static files used for HTML screenshots (e.g., JavaScript, CSS, image files). This is intended for requests from trusted services and is not designed for direct public access. Any JavaScript code can be run on the system and local files can be accessed.
    Downloads: 7 This Week
    Last Update:
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  • 3
    iodine

    iodine

    Official git repo for iodine dns tunnel

    Iodine is a DNS tunneling tool that allows IPv4 traffic to pass through DNS queries and responses. It is designed for situations where regular internet access is blocked but DNS resolution is still permitted. The project includes both a client and a server, requiring control of a domain and a publicly reachable server for proper setup. Iodine creates a virtual network interface so systems can communicate through an IP tunnel carried over DNS. It supports multiple DNS record types and automatically attempts to select efficient encoding methods depending on the resolver environment. Because the tunneled traffic is not encrypted by default, it is best treated as a transport layer that should be paired with secure protocols when privacy matters.
    Downloads: 6 This Week
    Last Update:
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  • 4
    lightcrawler

    lightcrawler

    Website crawler that audits site pages automatically with Lighthouse

    Lightcrawler is a command-line tool designed to crawl a website and run automated audits on the discovered pages using Google Lighthouse. It works by starting from a given URL and recursively exploring linked pages to collect a set of pages that should be analyzed. Each discovered page is then evaluated using Lighthouse, which performs checks related to performance, accessibility, and web development best practices. This allows developers to audit multiple pages of a site automatically instead of manually running Lighthouse on each individual page. Lightcrawler supports configuration through a JSON configuration file, enabling users to customize how the crawler operates and which Lighthouse audits should be executed. Settings such as crawl depth and the number of concurrent browser instances can be configured to control how aggressively the crawler scans a site. It was created as a developer utility to help identify issues across an entire website more efficiently.
    Downloads: 4 This Week
    Last Update:
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  • Paessler: Easy to Use With Enterprise Power. Free Trial Icon
    Paessler: Easy to Use With Enterprise Power. Free Trial

    A low-code dashboard makes monitoring intuitive for any admin, while scripting and custom sensors give experts full control.

    You shouldn't have to choose between a monitoring tool that's easy to use and one that's powerful enough for a complex environment. PRTG's low-code interface lets any admin build dashboards, set alerts and monitor devices without scripting, while custom sensors and full API access are there when your team needs deeper control. One platform, no compromise. Download a free 30-day trial now.
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  • 5
    Small tool for locate and display active DHCP servers on the subnet.
    Downloads: 17 This Week
    Last Update:
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  • 6
    Scripts and tools to manage your Server.