Comment by adeptima

QGIS is a gold standard to verify you tools works fine and data is in a correct format ...

if you are a web based first, you have even better options to build and extend

kepler, protomaps, maplibre-gl-js

the rest can be found on great Qiusheng Wu’s (aka @giswqs) Geo/GeoAI tutorials channels and repos

but what really amazed me is how geo spatial support is growing inside of databases recently

and many unlocked dataset compare to other industries

lot great webtools are comming for sure and you still can be 100% of most of your geospatial pipeline

p.s. want to extend the above list with self-hosted tools with minimum or none dependencies on paid APIs, and recommendations are greatly appreciated