Your best business development ideas in Singapore

Singapore consistently ranks as one of the best places in the world to start a business. Rules and regulations are few, bureaucracy is simple and efficient, taxation is low.
However, this also means that many people try to start a business there, which increases competition. (This is wanted by the government to keep inflation low.) You must be better or cheaper or both to survive, thus choose your business niche wisely!
Another problem are business costs, especially when it comes to property (office and warehouse rents or prices are sky-high!) and manpower (salaries are among the highest in Asia). You'll find a well-educated and disciplined workforce, but a lack of low-skilled workers.

One thing about business visa: It is VERY difficult to get a visa to start or run your own business in Singapore, unless it's an established big company that will employ many locals. Read about the EntrePass to see what is required.
If you want to move there to start a one-man shop or do freelance work - FORGET IT: Singapore does not want or need your patronage!