Lectern
Small businesses that run on people and deadlines live in spreadsheets, group chats, and duct tape. Lectern replaces that with one system that runs their recurring admin. It does the work overnight and leaves the owner a short queue to approve in the morning, and nothing reaches a customer they have not signed off on.
Every business runs on the same codebase, so taking on a new one is a config change rather than a rebuild. It started with test-prep academies and now runs a food business too.
It has paying customers. Bootstrapped and revenue-funded.