I wanted to write an article about headless CMS and why it seems impossible to find a solution that works well for editorial content AND offers decent editing experience AND offers on-premise data/open source. But then I realised: It is pointless to make arguments. Either you are ok with the fact that the cool kids on the block with the fancy UX charge for their services and do not offer 100% open source or you are ok with the editing experience and the administration overhead when you choose something that you need to run yourself. That’s the adjustable knob. So I always end up back where I started, sanity.io ..