Thinkfree Office supportsISO/IEC international standard ISO/IEC 26300Open Document Format forOffice Applications (odf, odt, odp, ods, odg).[6] It also supports Microsoft's XML formats (docx, pptx, xlsx) and Microsoft's legacy binary formats (doc, ppt, xls).
The software was previously marketed under different names, such as Thinkfree Server, Thinkfree Online, Hancom Office Online, and Hancom Office Web.[7] Eventually, the brand was consolidated under the name Thinkfree Office.
In June 2000, Thinkfree Inc. released Thinkfree Office, based inSilicon Valley,California.[8] It is recognized as the world's first online office editor (predatingGoogle Docs andMicrosoft 365) and attracted significant media coverage, including reports onCNN.[9]
In 2001, Microsoft CEOSteve Ballmer highlighted Thinkfree as a significant competitor in a magazine interview, considering it a potential threat to his company, second only to Linux.[10]
In January 2004, Thinkfree expanded into other foreign markets. Subsidiary Haansoft USA, Inc. was created inSan Jose,California to begin formal commercial operations in the US market.[12] At the same time, a partnership was established withRiverdeep with the purpose of improvingmarketshare.[13][14]
In February 2004, expansion into the Japanese market began. A commercialagency agreement was signed with PSI inShinjuku,Japan, which allowed for localized distribution. In addition, a global agreement was entered into withYamada Denki, one of the three main computer distributors inJapan, for a total of 180,000 units.[15]
In May 2006, Thinkfree Office received the "Product of the Year" award at the Well-Connected Awards,USA.[16]