Transparency International e.V. (TI) is a German registered association founded in 1993 by former employees of the World Bank. Based in Berlin, its nonprofit and non-governmental purpose is to take action to combat global corruption with civil societal anti-corruption measures and to prevent criminal activities arising from corruption. Its most notable publications include the Global Corruption Barometer and the Corruption Perceptions Index. TI serves as an umbrella organization.
https://en.wikipedia.org/wiki/Transparency_International