Kimai VS Fusio

https://github.com/kimai/kimai [for time etc]

Kimai is a pro-grade, web-based time tracker that can handle hundreds of users, generate reports, create invoices and more. This open-source tool includes a long list of useful advanced features like 2FA, customizable roles and permissions, multiple timezones and budgeting. Thanks to troubleshootmertr for the recommendation!

I 'm working with the opensource Kimai time tracking software, there is a table called kimai2_user_preferences that stores user preferences in a key/value pair. I'd ideally like to create four value/key pairs when a new row is added to the kimai2_users table in order to set default required values used by a plugin. I haven't put thought into the automation part of it, still trying to work out the SQL code to add the required values if they do not already exist.

You can use https://github.com/kevinpapst/kimai2 for time tracking (if creatively parent or child-id are represented as projects :), then you can book time against childcare activities you create)

It has some of the best features I believe. https://www.fusio-project.org/

You might also take a look at Fusio https://www.fusio-project.org/ which is an open source API management system

Hey, if you like you can also checkout Fusio https://github.com/apioo/fusio which is an open source API management platform to build APIs.