Aviationstack ◆
Aviationstack is a scalable REST API for real-time flight tracking, historical flight data, airport info, and global aviation data.

Domainee (Developer Tools): Domainee is a custom domains API for SaaS – add user domains with one call, SSL and renewal handled automatically. Pricing: Free – 50 domains & 100GB, then $0.20/domain. (data verified August 2026)
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Domainee is a custom domains API that lets SaaS products offer white-label custom domains to their users. Instead of building and maintaining the infrastructure to issue SSL certificates, monitor DNS, and handle renewals, developers make one API call and Domainee manages the rest – forever.
Ideal for engineering teams at scaleups (50–5,000 hostnames), solo founders, agencies building multi-tenant SaaS, and AI-native builders using Cursor or Claude Code. If your users keep asking for custom domains, Domainee solves that quickly. Not designed for small projects under 50 domains needing no automation, or for enterprises managing tens of thousands of hostnames (though volume discounts exist).
Connect your user's existing domain via a CNAME (bring-your-own). Or let them buy a domain directly in your app – Domainee handles the registrar and SSL. One API key, one webhook handler, one workspace – works for per-client workspaces or multiple SaaS products.
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