Lazarus is great! While FPC and Lazarus make it very easy and productive to make cross-platform GUI software, people should know that mORMot (https://github.com/synopse/mORMot2) makes it very easy to develop cross-platform web apps.

mORMot has been around for over a decade, the feature-set is very rich and mature, and the development and user forums are also very active - you can easily confirm that by checking the github repo's commit logs and visiting their forum.

mORMot's ORM is quite interesting - it's based on SQLite and supports all other mainstream databases through SQLite's virtual table mechanism.