Beeceptor vs CDNJS

Beeceptor lets you spin up a mock REST endpoint at a custom subdomain in seconds, define rule-based JSON, XML, plain-text, or binary responses through a no-code rule builder, and inspect the live requests hitting it in real time. It also doubles as an HTTP proxy for intercepting and rewriting responses from a real backend during development. The free tier needs no signup or API key — 50 requests/day per endpoint with up to 3 rules — with paid plans from $10/month unlocking private endpoints, higher volume, and CI/CD integration.

cdnjs mirrors thousands of open-source JavaScript, CSS, and font libraries on Cloudflare's edge network, and its free `/libraries` and `/libraries/:library` endpoints expose the same catalogue as JSON — name, latest version, file list, SRI hashes, and linked GitHub metadata — backed by Algolia search. No key or signup is required for either the asset CDN or the metadata API, and responses cache for six hours server-side.