Odoo https://www.odoo.com for list/form CRUD apps. Includes many ERP plugins but is a nice platform for your own apps. Fast client with powerful search tool. Just Python and XML declarative UI gets you working sites. FOS for local hosting and they do SAAS as their main ERP business.
Can you 'click together' CRUD apps with them though? Or you need to write XML? I did not check them for quite a while because everything that could've been 'no/lowcode drag & drop' was quite painful before.
I haven't tried their graphical builders, so I would definitely classify Odoo as "low code" not "no code". The Python and XML needed to produce a basic list/form type CRUD app is, IMHO, minimal when you consider the features that you get in the app (paging, filtering, sorting, grouping, spreadsheet import/export, comment thread, notification, etc.). And that's w/o considering the many plugins available that can be used together with your custom modules.
BTW, egow here. Spot of trouble with my password on that login name.
