The portal provides website hosting, data storage, publicity dealing, online payments and security systems.

[3] According to Ibope Nielsen Online, UOL is Brazil's largest internet portal with more than 50 million unique visitors and 6.7 billion page views every month.

Portugal Telecom had 29% of UOL, but sold its shares to Folhapar, a company controlled by businessman João Alves de Queiroz Filho of Hypermarcas holding in 2010.

In August, UOL launched a web provider in the cities of Greater São Paulo and Rio de Janeiro coupled with e-mail accounts and the setup of browser Netscape version 2.2 in Portuguese.

In 1997, UOL created a series of forums, focus groups and surveys, as well as the online version of ”Nova Enciclopédia Ilustrada Folha’’ encyclopedia.

UOL also expanded its connection capability to 20 megabits and received the award of best web provider and Internet users favorite's website of Informática Exame magazine in 1997.

The company also expanded its online operations with portals in Argentina, Mexico, Venezuela, Chile and United States of America.

[14] In 2008 UOL launched Zumo, a technology blog written by journalists that test products and report on Brazilian tech market.

[22][23] In 2014, UOL launched a mobile app for its chat and was appointed by a research of Ibope Conecta the website that most helps São Paulo Internet Users to find information.

In the same year, partnerships were established with Rede TV in order to host its website and with Clarín, one of Argentina's largest newspapers, to disclose UOL's content in its own Portuguese language portal.