From the talk Le développement pour Fastly, en local / Running Fastly on Your Laptop by Frank Denis (fdenis@fastly.com).
- fastly CLI —
fastly compute serve: https://github.com/fastly/cli - Viceroy — the standalone, open source Compute emulator: https://github.com/fastly/viceroy
- Fastlike — Compute emulator in Go, fully pluggable, with tracing and a real profiler: https://github.com/avidal/fastlike
- Falco — run, test, lint, format and debug Fastly VCL locally: https://github.com/ysugimoto/falco
- fastly.js — Fastly reimplemented in JavaScript, with an offline playground in your browser: https://github.com/dip-proto/fastly.js
- XVCL — a superset of VCL with functions, loops and macros, compiled to plain VCL: https://github.com/dip-proto/xvcl
- Fastly Fiddle — the online VCL playground: https://fiddle.fastly.dev
- IPCrypt — encrypting client IP addresses, spec and implementations: https://ipcrypt-std.github.io
- Why hashing or truncating IP addresses is not GDPR-grade anonymization: https://00f.net/2025/10/27/ip-anonymization/