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Hi 👋, we're Fastly.

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Fastly empowers everyone to build the good internet together.

With features ranging from DDoS and bot protection to caching and edge computing, we help make apps, websites, and connected devices faster, safer, and more engaging. We power GitHub Pages, the Linux Foundation, downloads of cURL, registries like RubyGems and PyPi, public CDNs like JSDelivr, and much more. We're BFFs with your refrigerator and your favorite news site.

At Fastly, open source is a part of our heritage, essential to our operations, and central to our future. Our core technologies are built on open-source code, and we use and contribute to the software and open internet standards that make the modern internet.

➡️ Learn more about our open source projects
➡️ Read our code of conduct and business policies

Fast Forward

To nurture and support those who share our vision of an open internet that is fast and secure for all, we extend free and deeply discounted services to eligible open source projects and the nonprofits that support them: Kubernetes, Mastodon, Rust, and over 100 more.

➡️ Read about Fast Forward and apply for our support

Popular repositories Loading

  1. pushpin pushpin Public

    A proxy server for adding push to your API, used at the core of Fastly's Fanout service

    Rust 3.8k 157

  2. ftw ftw Public archive

    Framework for Testing WAFs (FTW!)

    Python 266 59

  3. js-compute-runtime js-compute-runtime Public

    JavaScript SDK and runtime for building Fastly Compute applications

    JavaScript 204 36

  4. go-fastly go-fastly Public

    A Fastly API client for Go

    Go 160 131

  5. fastly-magento2 fastly-magento2 Public

    Module for integrating Fastly CDN with Magento 2 installations

    PHP 154 123

  6. Viceroy Viceroy Public

    Viceroy provides local testing for developers working with Compute.

    Rust 151 40

Repositories

Showing 10 of 262 repositories
  • pushpin Public

    A proxy server for adding push to your API, used at the core of Fastly's Fanout service

    fastly/pushpin’s past year of commit activity
    Rust 3,759 Apache-2.0 157 25 3 Updated Jul 3, 2025
  • Viceroy Public

    Viceroy provides local testing for developers working with Compute.

    fastly/Viceroy’s past year of commit activity
    Rust 151 Apache-2.0 40 59 (3 issues need help) 8 Updated Jul 3, 2025
  • go-fastly Public

    A Fastly API client for Go

    fastly/go-fastly’s past year of commit activity
    Go 160 Apache-2.0 131 0 3 Updated Jul 3, 2025
  • terraform-provider-fastly Public

    Terraform Fastly provider

    fastly/terraform-provider-fastly’s past year of commit activity
    Go 122 MPL-2.0 143 31 (2 issues need help) 3 Updated Jul 3, 2025
  • vscode-fastly-vcl Public

    A Visual Studio Code extension which adds syntax highlighting for Fastly Varnish Configuration Language (VCL) files.

    fastly/vscode-fastly-vcl’s past year of commit activity
    TypeScript 11 MIT 0 7 1 Updated Jul 3, 2025
  • fanout-chat-demo Public

    Demonstrates the use of Fastly Fanout to maintain a chat system and send update messages across devices in real time.

    fastly/fanout-chat-demo’s past year of commit activity
    Python 1 MIT 1 0 1 Updated Jul 3, 2025
  • fanout-leaderboard-demo Public

    Leaderboard Demo for Fastly Fanout

    fastly/fanout-leaderboard-demo’s past year of commit activity
    JavaScript 2 MIT 0 0 2 Updated Jul 3, 2025
  • fanout-compute-js-demo Public

    Fanout Fastly Compute JavaScript demo

    fastly/fanout-compute-js-demo’s past year of commit activity
    TypeScript 17 MIT 2 0 1 Updated Jul 3, 2025
  • heavykeeper-rs Public

    (fork) Heavykeeper algorithm for Top-K elephant flows

    fastly/heavykeeper-rs’s past year of commit activity
    Rust 0 MIT 0 0 0 Updated Jul 2, 2025
  • cli Public

    Build, deploy and configure Fastly services from your terminal

    fastly/cli’s past year of commit activity
    Go 145 Apache-2.0 69 42 (1 issue needs help) 3 Updated Jul 2, 2025