FileUp vs The Null Pointer

FileUp is a self-hosted, open-source temporary file-upload and sharing service built on .NET, offering a public REST API for anonymous uploads with configurable expiry times and view limits. A live OPTIONS preflight with an Origin header against the maintainer's own running instance, upload.sinasnp.com/api/public/upload, returned a 204 with no Access-Control-Allow-Origin header, resolving cors from unknown to no; the public upload endpoint requires no auth (only the separate admin panel uses Basic Auth), and HTTPS was reconfirmed. It's a free, open-source project with no paid tier.

The Null Pointer (0x0.st) is a minimalist, no-account temporary file host and URL shortener: a plain POST with a file returns a bare URL as the entire response body, with retention scaled by file size. A live OPTIONS preflight with an Origin header against the real host, 0x0.st, returned a 200 with no Access-Control-Allow-Origin header, resolving cors from unknown to no; no auth is required for uploads, and HTTPS was reconfirmed. It's a single free, ad-free service with no paid tier, retaining files from 30 days up to 1 year depending on size (max 512MiB).