Cost of living, quality of life and ease-of-doing-business indexes — Numbeo, Nomad List and World Bank data for nomads and expats.
For anyone living abroad rather than just visiting, the practical questions are: what does it cost, how good is daily life, and how easy is it to get things done? The indexes here answer exactly that. Numbeo crowdsources cost-of-living and quality-of-life data city by city, so you can compare rent, groceries and transport before you commit.
Nomad List ranks cities specifically for remote workers (internet, community, climate, safety), and the World Bank's Ease of Doing Business archive captures how friendly a country is to setting up and running a business. Together they turn a vague "could I live here?" into something you can actually compare.