Best Free Alternatives to Retool

Keymint is a developer-focused software licensing platform that makes it easy to issue, manage, verify, and protect software licenses. With a simple REST API, flexible licensing workflows, real-time usage insights, and built-in security features, developers can integrate licensing into their applications without unnecessary complexity. Whether you're shipping an indie project or managing software at scale, Keymint provides the tools needed to control access, monitor license activity, and manage customers from one place.

TravDigi is a digital hotel check-in app that gives every traveler a verified digital traveler identity — enabling QR code hotel check-in and contactless hotel check-in that replaces paper forms at any hotel in under 20 seconds.

Greta.sh is an AI-native platform that turns a plain-language idea into a live software product - no code required. Describe what you want to build, and Greta.sh generates it, deploys it to a real domain, and quietly manages the backend, security, and hosting underneath. Unlike most AI builders, Greta.sh does not stop at launch: it keeps refining the product afterward on its own, tuning SEO and AEO so the product stays discoverable on Google and on AI answer engines like ChatGPT and Perplexity, guided by real usage data.