Building CogSend: A Self-Hosted Social Media Scheduler

I have been using Typefully for a long time and it is genuinely great, but it supports a fixed set of platforms and I wanted to decide that for myself. So I built my own. Say hello to CogSend, a self-hosted social media scheduler. CogSend is open source under the MIT license and it runs on your own free Cloudflare account. There is no monthly fee and no account with me, and your platform credentials stay in your infrastructure. It currently supports Mastodon, Bluesky, LinkedIn, Threads and X with more platform support coming soon. What it can do The main idea is, you write a post once, then customize it per platform if you want. There is a Global tab plus a tab for each platform you override, so the X version can stay short while the LinkedIn version says the same thing at length. If you paste a long draft, it splits into a thread that fits the tightest platform you selected, counted the way that platform counts. Publish now or schedule: Every destination reports its own result, so…