Show HN: AllPub – Smart Cross-platform publishing tool

Hi HN,

I'm a solo developer who built AllPub (https://allpub.co) to solve my own problem: spending 6+ hours/week manually cross-posting content.

What it does: Connects to your Notion/Dev.to/Hashnode workspace and cross-publishes your content with one click.

Built with: Next.js,Tailwind, Supabase, Clerk, Mailerlite. Used GitHub Copilot heavily for API integrations and boilerplate.

Hardest technical challenge: Coordinating rate limits and OAuth refresh cycles across 3+ platforms simultaneously. Each platform handles authentication differently, so graceful degradation for partial failures was complex.

Currently awaiting for more feedback...

This is my first real SaaS product. Happy to answer questions about the architecture or the build process.

Try it: https://allpub.co