What other types of business exist in Russia?
A quick rundown on the most common types of business there are here:
1. Бизнес без оформления -- No legal business entity (private builders, carpenters, welders, etc, or small groups)
2. Частный/индивидуальный предприниматель -- Sole proprietor (simple basic taxation, minimum of documentation)
3. ООО (Общество с ограниченной ответственностью) -- Ltd (simple taxation, takes no risks/liability beyond its authorized capital stock, that's why 'limited')
4. ЗАО (Закрытое Акционерное Общество) -- Closed JSC (shareholders are only the staff of the enterprize).
5. ОАО (Open JSC) -- anyone can be a shareholder.