Which measures are there to evaluate a country economical development?
Your question brakes down into:
- Alternatives to measure "economic development": there are several ways to interpret what development is, it can be social, intensity of money flows, or volume of "money flows". 

If you look for social development and well-being, the HDI (Human Development Index) is a good start, but there are several others like the Genuine Progress Indicator (GPI)

If you look more to assess the level of financial risk that a government or country is exposed to (debt wise) in combination to the wealth generated in that country, you can take as an example what the European union measures for economical stability: a combination of Budget deficit to GDP and debt-to-GDP ratio.