Along with four other classmates, Ma Huateng went on to co-found Tencent in 1998. The company's first product came after Ma participated in a presentation for ICQ, the world's first Internet instant messaging service, founded in 1996 by an Israeli company. Inspired by the idea, Ma and his team launched in February 1999 a similar software, with a Chinese interface and a slightly different name – OICQ (or, Open ICQ). The product quickly became popular and garnered more than a million registered users by the end of 1999, making it one of the largest such services in China.
After AOL (America Online) bought ICQ in 1998, the company filed an arbitration against Tencent with the National Arbitration Forum in the United States, claiming that OICQ's domain names OICQ.com and OICQ.net were in violation of ICQ's trademark. Tencent lost the case and had to relinquish the domain names. In December 2000, Ma changed the name of the software to QQ (with "Q" and "QQ" used to stand for the word "cute").