[paxys]

They are very different use cases. Retool & the like are for building stuff used by yourself/your company. You can connect to internal data sources/APIs and build dashboards. SaaS builders are for building your app for a broader audience. They mainly offer features like authentication, user management, CRM, marketing, subscriptions, billing.

[ckluis]

I think of it differently. The internal tool building companies focus on 1 of the 3 legs of building.

1. building

2. marketing

3. managing

A lot of internal tools would be externally viable as well (not all).