Developing integrations for Ghost

Hi,

I’ve begun exploring Ghost for my blogging needs but find the limited number of integrations and the high cost of certain others, like Zapier, somewhat disheartening. Recognizing that Ghost does offer integrations through platforms such as Zapier, I’m intrigued by the potential to develop add-ons that could benefit the wider community. Is it possible to create such integrations, and if so, does a developer guide exist that outlines the process for contributing these solutions for communal use?

Thanks