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Hi 👋, we're Fastly.

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 powerGitHub Pages, theLinux Foundation, downloads ofcURL, registries likeRubyGems andPyPi, public CDNs likeJSDelivr, 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 repositoriesLoading

pushpinpushpinPublic
A proxy server for adding push to your API, used at the core of Fastly's Fanout service
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ftwftwPublic archive
Framework for Testing WAFs (FTW!)
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js-compute-runtimejs-compute-runtimePublic
JavaScript SDK and runtime for building Fastly Compute applications
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go-fastlygo-fastlyPublic
A Fastly API client for Go
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ViceroyViceroyPublic
Viceroy provides local testing for developers working with Compute.
Rust 159 40
fastly-magento2fastly-magento2Public
Module for integrating Fastly CDN with Magento 2 installations
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Showing 10 of 274 repositories

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 14MIT0 8 0 UpdatedDec 17, 2025
Viceroy Public
Viceroy provides local testing for developers working with Compute.
fastly/Viceroy’s past year of commit activity
Rust 159Apache-2.0 40 63 (4 issues need help) 7 UpdatedDec 16, 2025
devex-reusable-workflows Public
GitHub Actions workflows that are used in many DevEx Engineering repositories
fastly/devex-reusable-workflows’s past year of commit activity
2MIT0 0 0 UpdatedDec 16, 2025
rust-cat Public
A Rust implementation of the CTA-Wave Common Access Token (CAT) specification.
fastly/rust-cat’s past year of commit activity
Rust 5MIT0 0 0 UpdatedDec 16, 2025
terraform-provider-fastly Public
Terraform Fastly provider
fastly/terraform-provider-fastly’s past year of commit activity
Go 125MPL-2.0 146 26 (2 issues need help) 1 UpdatedDec 15, 2025
compute-sdk-go Public
Go SDK for building Fastly Compute applications
fastly/compute-sdk-go’s past year of commit activity
Go 85Apache-2.0 10 10 1 UpdatedDec 15, 2025
js-compute-runtime Public
JavaScript SDK and runtime for building Fastly Compute applications
fastly/js-compute-runtime’s past year of commit activity
JavaScript 215Apache-2.0 41 72 19 UpdatedDec 15, 2025
cli Public
Build, deploy and configure Fastly services from your terminal
fastly/cli’s past year of commit activity
Go 151Apache-2.0 69 44 (1 issue needs help) 4 UpdatedDec 15, 2025
fastly-magento2 Public
Module for integrating Fastly CDN with Magento 2 installations
fastly/fastly-magento2’s past year of commit activity
PHP 156BSD-3-Clause 125 22 15 UpdatedDec 15, 2025
esi Public Forked fromkailan/esi
A streaming Edge Side Includes parser and executor designed for Fastly Compute.
fastly/esi’s past year of commit activity
Rust 11MIT 6 10 3 UpdatedDec 14, 2025