Curated list of the top open‑source CDN solutions that provide high performance, scalability, and low cost for developers.
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High‑performance caching proxy server that can be configured as a forward/reverse proxy CDN, supporting plugins for custom routing and edge logic.
Fast HTTP accelerator that can act as an edge cache; widely used for CDN front‑ends with VCL for flexible request handling.
Modern web server with automatic HTTPS and built‑in reverse proxy; can serve static assets from edge nodes using plugins like caddy-cdn.
Feature‑rich reverse proxy and caching layer; can be used to build a DIY CDN with geo‑based load balancing and fast static asset delivery.
Dynamic edge router with built‑in Let's Encrypt, middleware, and support for multiple back‑ends; can be combined with caching layers for CDN functionality.
Nginx + LuaJIT platform enabling programmable edge logic; ideal for building custom caching, request routing, and content transformation.
Classic caching proxy that can be configured as a forward CDN; supports ACLs, SSL bumping, and hierarchical caching across multiple nodes.
High‑performance HTTP/2 server with built‑in reverse‑proxy and caching capabilities; suitable for low‑latency edge deployments.
Open‑source sandbox lets developers prototype edge logic locally before deploying to Fastly’s commercial CDN.
CLI and SDK for developing and testing edge KV storage; can be paired with Cloudflare’s free tier for a cost‑effective CDN.
Free edge‑script SDK enables custom logic on BunnyCDN’s platform; the SDK is open source while the CDN service offers a low‑cost tier.
Open‑source project that turns any static site into a CDN‑like service using serverless functions and edge caching.
Lightweight edge caching proxy written in Go; easy to deploy on inexpensive VPS instances for a DIY CDN.
Edge‑aware NoSQL database with built‑in replication that can serve static assets similarly to a CDN.
Akamai provides open‑source edge‑script examples and a local emulator for testing CDN logic without a paid plan.