Retool has 3 open source alternatives
Internal app builder Appsmith is an open source platform for building internal apps. Connect databases and APIs, drag widgets onto a page and …
Low-code internal apps Budibase is an open source low-code platform for internal apps. Connect a database or API, build forms and admin screens …
Low-code internal tool builder ToolJet is an open source low-code platform for internal tools. Build dashboards, admin panels and forms on top of your …