Cloudflare Open Source

Migrating between frameworks can be hard. Having some way to quantify the migration can help with the process. ui-migration-stats provides the specific dependency feedback and numbers related to each your frameworks.

cloudflare-gcp

JavaScript

Google Cloud Function to push json files from GC Storage to Big Query

redux-grim

JavaScript

workers-webpack-example

JavaScript

An example of building a Cloudflare Worker with Webpack

worker-performance-examples

JavaScript

Scripts which can be used to test the performance of various providers

serverless-cloudflare-workers

JavaScript

Serverless provider plugin for Cloudflare Workers

workers-graphql-gateway-example

JavaScript

GraphQL running on Cloudflare Workers

workers-react-pwa-example

JavaScript

worker-template

JavaScript

a template to kickstart your Cloudflare worker!

worker-template-static

JavaScript

worker-template-router

JavaScript

worker-template-fetch

JavaScript

worker-template-redirect

JavaScript

binjs-demo

JavaScript

Demo application for BinAST

binast-cf-worker

JavaScript

Serve BinAST via a Cloudflare Worker

cloudflare.design

JavaScript

worker-speedtest-template

JavaScript

color

JavaScript

kv-worker-migrate

JavaScript

hugo-cloudflare-docs

JavaScript

worker-emscripten-template

JavaScript

worker-sites-init

JavaScript

tropical irradiation

react-workers-template

JavaScript

Example project showing how to deploy your React application to Cloudflare Workers Sites

workers.cloudflare.com

JavaScript

The Cloudflare Workers website.

lasso

JavaScript

A Worker that caches wrangler's binary dependencies, so you can install wrangler if NPM or GitHub are having a bad day.

binary-install

JavaScript

Install binary applications via npm

access-crl-worker-template

JavaScript

A worker that can be used for doing basic CRL checks. It assumes that the request has gone through Access MTLS.

securitytxt-worker

JavaScript

The worker that serves Cloudflare's security.txt!

deploy.workers.cloudflare.com

JavaScript

✨ Deploy Cloudflare Workers applications with (almost) no-config, using GitHub Actions

cloudflare-docs-engine

JavaScript

A documentation engine built on Gatsby, powering Cloudflare’s docs https://github.com/cloudflare/cloudflare-docs

cobol-worker-template

JavaScript

A Cloudflare worker that runs COBOL.

python-worker-hello-world

JavaScript

Python hello world for Cloudflare Workers

workers-chat-demo

JavaScript

workers-aws-template

JavaScript

Cloudflare Workers template for accessing AWS services such as DynamoDB and SQS

workers-google-analytics

JavaScript

Middleware for Google Analytics tracking in Workers

worker-sentry

JavaScript

Sentry over Access for Worker

durable-objects-rollup-esm

JavaScript

Template for durable objects, rollup, es modules

durable-objects-webpack-commonjs

JavaScript

Template for durable objects, webpack, commonjs

modules-rollup-esm

JavaScript

Template for modules, rollup, es modules

modules-webpack-commonjs

JavaScript

Template for modules, webpack, commonjs

service-worker-custom-build

JavaScript

Template for webpack-based custom build of a service worker

random-employee-chat

JavaScript

durable-objects-template

JavaScript

websocket-template

JavaScript

Example template for working with the WebSocketPair API in Cloudflare Workers.

doom-workers

JavaScript

Website and Message Router source code for the Multiplayer Doom on Cloudflare Workers tech demo

workers-airtable-form

JavaScript

Example codebase showing how to handle form data using Cloudflare Workers serverless functions - sending the data to Airtable

postgrest-worker-example

JavaScript

Example Workers function for interfacing with a PostgreSQL database, using PostgREST

stream-wordpress

JavaScript

cfweb3

JavaScript

miniflare-esbuild-ava

JavaScript

Example project using Miniflare, esbuild and AVA

worker-template-postgres

JavaScript

Reference demo and modified PostgreSQL driver to connect Cloudflare Workers to a relational database.

worker-template-mysql

JavaScript

Reference demo and modified MySQL driver to connect Cloudflare Workers to a relational database.

cf-webhook-relay

JavaScript

pages-action

JavaScript

🛑 DEPRECATED, please use wrangler-action

workers-access-external-auth-example

JavaScript

privacy-gateway-relay

JavaScript

A Oblivious HTTP ("OHTTP") Relay built on Cloudflare Workers.

webcm-docs

JavaScript

Documentation for Web Component Manager (WebCM)

msft-risky-user-ad-sync

JavaScript

This repository deploys a Cloudflare Scheduled Worker which synchronises users flagged by Azure's Risky User API into Groups based on risk level. These groups can be applied to Cloudflare Zero Trust policies to isolate application access.

speedtest

JavaScript

Component to perform network speed tests against Cloudflare's edge network

chatgpt-plugin

JavaScript

Build ChatGPT plugins with Cloudflare's Developer Platform 🤖

blindrsa-ts

JavaScript

A TypeScript Library for Blind RSA Signature protocol

workers-nodejs-compat-matrix

JavaScript

https://workers-nodejs-compat-matrix.pages.dev

zt-hostname-ip-list-sync

JavaScript

Synchronize DNS with Zero Trust IP Lists

custom-device-posture-integration-example-worker

JavaScript

Example implementation of a worker for custom device posture integrations

cf-identity-dynamic

JavaScript

A highly customizable block page built in Cloudflare Workers that provides enriched Access Deny reasoning to end users.

Go

golibs

Go

Various small golang libraries

hellogopher

Makefile

Hellogopher: "just clone and make" your conventional Go project

goser

Go

Code for talk about Go Serialization

golz4

C

Golang interface to LZ4 compression

go-stream

Go

ahocorasick

Go

A Golang implementation of the Aho-Corasick string matching algorithm

conf

Go

Really, really simple key=val configuration file parser

jgc-talks

Go

Code samples and data used in talk preparation by John Graham-Cumming

bm

Go

A Golang implementation of Bentley/McIlroy long string compression

dns

Go

Clone of https://github.com/miekg/dns

go

Go

Go with Cloudflare experimental patches

comodo

Go

Comodo

Stout

Go

A reliable static website deploy tool

goimports-nogroup

Go

A patched goimports that does not divide imports into groups.

cf-tls

Go

A duplicate of Go's crypto/tls, with additional helper functions

service

Go

backoff

Go

Backoff timer shared between several projects.

complainer

Go

Complainer's job is to send notifications to different services when tasks fail on Mesos cluster.

gokey

Go

A simple vaultless password manager in Go

pal

Go

PAL: A secret bootstrapping tool for Docker

unsee

Go

Alert dashboard for Prometheus Alertmanager

alertmanager2es

Go

Receives HTTP webhook notifications from AlertManager and inserts them into an Elasticsearch index for searching and analysis

opentsdb_exporter

Go

Prometheus exporter for OpenTSDB

buffer

Go

Circular buffer backed by MMAPed file for golang

certinel

Go

A sentry for zero-hit TLS certificate changes in Go

terraform-provider-cloudflare

Go

Cloudflare Terraform Provider

promsaint

Go

Nagios to Prometheus integration

kafka_zookeeper_exporter

Go

Prometheus exporter for Kafka cluster state stored in ZooKeeper

cfdeploy

Go

Cloudflare Deployment Tool

bn256

Go

Package bn256 implements a particular bilinear group.

cloudflared

Go

Cloudflare Tunnel client (formerly Argo Tunnel)

mitm.watch

Go

cloudflare-ingress-controller

Go

A Kubernetes ingress controller for Cloudflare's Argo Tunnels

goflow

Go

The high-scalability sFlow/NetFlow/IPFIX collector used internally at Cloudflare.

fgbgp

Go

flow-pipeline

Go

A set of tools and examples to run a flow-pipeline (sFlow, NetFlow)

ebpf_exporter

Go

Prometheus exporter for custom eBPF metrics

cf_benchmark

Go

mitmengine

Go

A MITM (monster-in-the-middle) detection tool. Used to build MALCOLM:

gortr

Go

The RPKI-to-Router server used at Cloudflare

roughtime

Go

A secure clock-synchronization protocol for when rough is enough.

circl

Go

CIRCL: Cloudflare Interoperable Reusable Cryptographic Library

tableflip

Go

Graceful process restarts in Go

ct-log

Go

A low-cost Certificate Transparency log for deployment in the cloud.

cf-terraforming

Go

A command line utility to facilitate terraforming your existing Cloudflare resources.

cfrpki

Go

Cloudflare's RPKI Toolbox

xdpcap

Go

tcpdump like XDP packet capture

cbpfc

Go

cBPF to C or eBPF compiler

apt-transport-cloudflared

Go

lockbox

Go

Offline encryption of Kubernetes Secrets

slirpnetstack

Go

slirp4netns implementation using gvisor/netstack

utahfs

Go

UtahFS is an encrypted storage system that provides a user-friendly FUSE drive backed by cloud storage.

ipvs

Go

Package ipvs allows you to manage Linux IPVS services and destinations

opaque-ea

Go

origin-ca-issuer

Go

cert-manager issuer for Origin CA

odoh-go

Go

Oblivious DoH library in Go

odoh-client-go

Go

Oblivious DoH client

opaque-core

Go

pint

Go

Prometheus rule linter/validator

go-ipfs-blocklist

Go

migp-go

Go

pat-go

Go

Private Access Tokens reference implementation

pat-app

Go

ipfs-gateway-monitor

Go

privacy-gateway-server-go

Go

An Oblivious HTTP gateway

go-originframe

Go

net-originframe

Go

bbmp2kafka

Go

BMP to Kafka processor

octopus

Go

The Octopus is part of our network automation pipeline. Its job is to aggregate data from different authoritative data sources into one Enriched Topology to provide a full picture to downstream systems.

hello-world-container-image

Go

Example container image for running on Cloudflare's container runtime

parquet-tsdb-poc

Go

A POC for a tsdb storage using parquet

Rust

quiche

Rust

🥧 Savoury implementation of the QUIC transport protocol and HTTP/3

boringtun

Rust

Userspace WireGuard® Implementation in Rust

cloudflare-rs

Rust

Rust library for the Cloudflare v4 API

wirefilter

Rust

An execution engine for Wireshark-like filters

wrangler-legacy

Rust

🤠 Home to Wrangler v1 (deprecated)

rustwasm-worker-template

Rust

A template for kick starting a Cloudflare Worker project using workers-rs. Write your Cloudflare Worker entirely in Rust!

cfnts

Rust

Cloudflare's implementation of the NTS protocol written in Rust

lazyhtml

Rust

HTML5-compliant parser and serializer than enables building transformation pipeline in a pluggable manner

lol-html

Rust

Low output latency streaming HTML parser/rewriter with CSS selector-based API

psi_exporter

Rust

Prometheus exporter for Pressure Stall Information (PSI) from Linux kernel.

chrome-devtools-rs

Rust

Rust library for the Chrome Devtools Protocol

sliceslice-rs

Rust

A fast implementation of single-pattern substring search using SIMD acceleration.

saffron

Rust

The cron parser powering Cron Triggers on Cloudflare Workers

matched-data-cli

Rust

Tool to interact with the firewall matched data feature.

odoh-rs

Rust

Oblivious DoH library in Rust

odoh-client-rs

Rust

Oblivious DoH client application written in Rust

boring

Rust

BoringSSL bindings for the Rust programming language.

workers-rs

Rust

Write Cloudflare Workers in 100% Rust via WebAssembly

nel-rs

Rust

Basic Rust utilities for building NEL reports from network errors.

dmarc

Rust

dkim

Rust

DKIM (RFC6376) implementation

ssh-log-cli

Rust

daphne

Rust

Implementation of DAP

svg-hush

Rust

Make it safe to serve untrusted SVG files

privacy-gateway-client-library

Rust

recapn

Rust

A WIP Cap'n Proto implementation in Rust written from the ground up

shellflip

Rust

Graceful process restarts in Rust

cf-reqwest

Rust

This is a fork of the great reqwest library with some features that were not accepted to the upstream

aloha-rs

Rust

pingora

Rust

A library for building fast, reliable and evolvable network services.

freighter

Rust

A fast, modular, and operationally boring Rust private registry implementation.

mmap-sync

Rust

Rust library for concurrent data access, using memory-mapped files, zero-copy deserialization, and wait-free synchronization.

networkquality-rs

Rust

wasm-coredump

Rust

Cloudflare Workers Wasm Coredump Service

workers-wonnx

Rust

foundations

Rust

Cloudflare's Rust service foundations library.

cardinality-estimator

Rust

A crate for estimating the cardinality of distinct elements in a stream or dataset.

wildcard

Rust

Wildcard matching

plexi

Rust

Your Key Transparency auditor companion

trie-hard

Rust

Novel implementation of a Trie data structure optimized for small, sparse maps

entropy-map

Rust

Low-latency hash map using minimal perfect hash functions and compact encoding.

quiche-mallard

Rust

quiche fork with congestion & zero-copy patches

chaussette

Rust

azul

Rust

An implementation of a static-ct-api certificate transparency log for deployment on Cloudflare Workers

Other

semver_bash

Shell

Semantic Versioning in Bash

Cloudflare-Policies

openssl-deprecate-rc4

Small patch for OpenSSL that deprecates the use of RC4

zlib

C

Cloudflare fork of zlib with massive performance improvements

homebrew-cloudflare

Ruby

pmtud

C

Path MTU daemon - broadcast lost ICMP packets on ECMP networks

cf-ip-rewrite

PHP

stout.is

Stylus

Documentation for Stout

docker-opentsdb

Shell

Dockerfiles for OpenTSDB

jpegtran

C

jpegtran fork with significant performance improvements

cloudflare-blog

C

Cloudflare Blog code samples

docker-phan

Shell

Dockerization of the Phan PHP static analysis tool

Area1API

Python

Sample API code for public use by customers.

typical.design

Stylus

A website feature common design tropes for testing Eager apps.

sqlalchemy-clickhouse

Python

font-awesome-glyph

HTML

eslint-config-cloudflare

badupnp

Makefile

Web service to test if SSDP/UPnP is exposed to the internet

receipt-printer

Python

Code to drive the receipt printer in the Cloudflare London office that outputs randomness

cf-nocompress

C

An nginx module to prevent generic compression oracles

GCS-Logshare-Setup-Script

Shell

Script to automate Cloudflare ELS logs into Google BigQuery and Google Data Studio

authr

PHP

:key: a flexible and expressive approach to access-control

gatelogic

Python

Gatelogic - Somewhat reactive programming framework in Python

templates

TypeScript

Templates for Cloudflare Workers

py-mmdb-encoder

Python

Create mmdb files to encode prefix lists.

sslsaas-examples

Java

Cloudflare's SSL for SaaS examples in various programming languages.

mmproxy

C

mmproxy, the magical PROXY protocol gateway

GHC-Errbot

Python

A Google Hangouts Chat Backend for Errbot

cloudflare-access-for-atlassian

Java

Authenticate Atlasssian products when using Cloudflare Access

brotli-go

C

cloudflare-workers-wasm-demo

C

helm-charts

Smarty

serverless-action

Dockerfile

.github

Cloudflare's template for open source community resources

workers-docs

🌥👷‍♀️ The documentation site for Cloudflare Workers

binast-benches

Makefile

Benchmarks for BinAST

workers-graphql-server

TypeScript

🔥Lightning-fast, globally distributed Apollo GraphQL server, deployed at the edge using Cloudflare Workers

the-deep-dive-into-how-verizon-and-a-bgp-optimizer-knocked-large-parts-of-the-internet-offline-monda

Shell

worker-typescript-template

TypeScript

ʕ •́؈•̀) TypeScript template for Cloudflare Workers

workers-types

TypeScript

TypeScript type definitions for authoring Cloudflare Workers.

worker-sites-template

HTML

db-connect

TypeScript

:rocket: Connect your SQL database to Cloudflare Workers

kv-asset-handler

TypeScript

Routes requests to KV assets

wrangler-action

TypeScript

🧙‍♀️ easily deploy cloudflare workers applications using wrangler and github actions

flan

Python

A pretty sweet vulnerability scanner

template-registry

TypeScript

A simple API via a Worker that serves all the template content

stpyv8

C++

Python 3 and JavaScript interoperability. Successor To PyV8 (https://github.com/flier/pyv8)

cloudflare-access-for-sentry

Python

linux

Cloudflare Linux Kernel Patches

rpki-rtr-client

Python

isbgpsafeyet.com

HTML

Is BGP safe yet?

cobweb

COBOL

COBOL to WebAssembly compiler

cobol-worker

COBOL

cobol.demos.cloudflare.com

HTML

stream-react

TypeScript

stream-angular

TypeScript

exim-cve-2019-10149-data

Data Collection Related to Exim CVE-2019-10149

sandbox

C

Simple Linux seccomp rules without writing any code

cloudflaretv-apps

scala-worker-hello-world

Scala

Scala hello world for Cloudflare Workers

kotlin-worker-hello-world

Kotlin

reason-worker-hello-world

Reason

Reason hello world for Cloudflare Workers

dart-worker-hello-world

Dart

Dart hello world for Cloudflare Workers

scala-worker-kv

Scala

Scala example of Workers KV

argo-tunnel-examples

HCL

rakelimit

C

A fair-share ratelimiter implemented in BPF

perl-worker-hello-world

Perl

php-worker-hello-world

PHP

cloudflare-docs

MDX

Cloudflare’s documentation

ecommerce-bundles-workers-example

Vue

odoh-proxy-worker

advisories

Python

This repo functions as the hub for "open sourced" closed source vulnerabilities/advisories as well as educational writeups composed in collaboration with third parties on discovered vulnerabilities.

workers-honeycomb-logger

TypeScript

A library to easily send request events and traces to https://honeycomb.io

odoh-analysis

M4

tensorflow-nata

Jupyter Notebook

Our model uses a convolutional neural network and TensorFlow to infer if an image is a Pastel de Nata or not. We trained it with thousands of Portuguese egg custard tart (Pasteis de Nata) images and other non related images to get the "Nata or Not" classifier.

Cloudflare Open Source

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Repos

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claire

JavaScript

Cloudflare-CPanel

PHP

Cloudflare-Magento

PHP

Cloudflare-Pivotal-Cloud-Foundry

Go

Cloudflare-WordPress

PHP

mod_cloudflare

C

cloudflare-plugin-frontend

JavaScript

cloudflare-plugin-backend

PHP

Automate

cloudflare-go

Go

node-cloudflare

JavaScript

python-cloudflare

Python

cloudflare-php

PHP

salt-cloudflare

Python

logsclient

Go

logshare

Go

json-schema-tools

JavaScript

doca

JavaScript

doca-bootstrap-theme

JavaScript

Secure

cfssl

Go

sslconfig

redoctober

Go

bpftools

Python

fourq

Go

gokeyless

Go

cfssl_trust

Go

certmgr

Go

tls-tris

Go

Nginx

lua-nginx-module

C

nginx-systemtap-toolkit

Perl

stapxx

Perl

ngx_cache_purge

C

ngx_brotli_module

C

lua-cmsgpack

C

lua-aho-corasick

C++

lua-resty-logger-socket

Raku

lua-resty-cookie

Perl