International Monetary Fund (IMF) is an international organization that tries to contribute to global economical growth and stability by providing financial and consultational support to its member-states. Currently, it includes almost all independent states in the world (190 countries).
The ways of IMF support usually includes, but is not limited to long-term and low-interest tranche-divided conditional* loans, non-loan financial conditional* supportion, qualification improvement for govermental workers. Conditional loans and supportion are the most oftenly used forms for development programs by IMF.
*Conditions include radical implementation budget-centered economy, structural reforms, and macro-economical monetary-loan changes. If the country does not face the required conditions after support, it usually doesn't get other types of development programs in the future.
Decisions in IMF are correlated to member quotas - as much you contribute to IMF as big your vote is. For example, the US has the biggest quota of 16.5% vote rate. For average decisions of small development and support programs the IMF office must get 50>% of votes for agreement to "use" the money. In important cases, such as providing support to post-war countries or after-overthrow newly formed governments, the office must get more than 85% of votes. In such cases the USA has the "veto right", because without its vote of 16.5% the decision cannot be accepted.
The main competitor of IMF is (Export-Import) Exim Bank of China. 100% of votes in it is depended on China's government interests.