Summary The office suite market is large, profitable and growing, and this attracts new entrants: low-cost clones, open-core products and, more recently, suites built largely with artificial intelligence. Most of them compete on price and on native support for OOXML, a format whose evolution remains in practice under Microsoft’s control. When features can be reproduced cheaply, what distinguishes a suite is who governs the document format and the software, and therefore who controls the content. This is the question of digital sovereignty, and its outcome will depend partly on political decisions, and partly on software features. The 1980s and 1990s The office suite sector emerged in the 1980s and developed in the 1990s, when Microsoft Office established itself as the leading product, with a market share of over 90% according to Microsoft unofficial statements at their events. Some may remember the main competitors: Lotus SmartSuite, WordPerfect Office and StarOffice, the ancestor of OpenOffice and LibreOffice. Fewer will recall Anywhere Office, Ability Office, Pro PC Suite 2001 and ThinkFree Office. Ability Office still exists, and ThinkFree Office is now called Hancom Office. By the end of the century Microsoft Office dominated the sector, while all other products had a barely noticeable