Tech Maven Geospatial has many ready to go Mapping Applications for Web, Desktop -Windows, and Mobile -iOS and Android that support a LOW CODE/NO CODE approach

Configure the map with a JSON file and we have JSON Catalog Generator web apps to build the JSON.

The core features are super robust then we can build out the additional capabilities you may need

CRUD App builder (we use AppSmith) with advanced data entry and search/query forms and integration into our mapping libraries with server-side code to sync geometry edits/creation with postgis and ESRI FeatureServer