For starting forums for example Discourse is great with plenty of free plugins. But nothing like that exists in E-commerce atleast I've not used anything which

For starting forums for example Discourse is great with plenty of free plugins. But nothing like that exists in E-commerce atleast I've not used anything which atleast solved some basic e-commerce problems with free plugins. Yet there are tons of e-commerce websites. It seems many of them are using plugins by some private agencies which sell maintenance service.