Razix
Hey HN! I'm Aditya, and today I'm excited to share Razix. Razix lets you configure custom domains for multi-tenant platforms. It also provides an API so you can integrate it and let your B2B users add their custom domains. It's special to me because this is my first SaaS whose core feature is written in Rust. While building Razix, I: - Created my first reverse proxy server - Learned to issue Let's Encrypt certificates using instant-acme - Learned how TLS and SSL work - And much more All with minimal use of AI.
Razix launched on June 12, 2026 with 5 votes, #2,466 of 22,647 launches that month and more than 75% of that year's launches.
What it does
Adding custom domain support to a multi-tenant SaaS application is a notoriously complex infrastructure problem. It requires managing reverse proxies, dynamic routing logic, and automated SSL certificate provisioning - all while ensuring zero added latency to your core application.
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