Windbag
A desktop composer and scheduler for social platforms — Bluesky, Mastodon, Reddit, X, LinkedIn, Threads, Instagram and Facebook Pages. Your posts, your accounts and your credentials stay on your own machine.
This site exists for three narrow reasons: it publishes the documents below, it provides the HTTPS sign-in redirect Meta requires and a desktop app cannot serve, and it briefly holds attachments at a public URL so Meta can fetch them — the Threads and Instagram APIs will not accept an uploaded file.