The Commodore 64 amassed a large software library of nearly 10,000 commercial titles, covering most genres from games to business applications, and many others. Applications, utility, and business software While the 1541 disk drive's slow performance made the Commodore 64 mostly unsuitable as a business computer, it was still widely used for many important tasks, including computer graphics creation, desktop publishing, and word processing. Info 64, the first magazine produced with desktop publishing tools, was created on and dedicated to the Commodore platform. The best known art package was perhaps KoalaPainter, primarily because of its own custom graphics tablet user interface - the KoalaPad. Another popular drawing program for the C64 was Doodle!. A Commodore 64 version of The Print Shop existed, allowing users to generate signs and banners with a printer. "The Newsroom" was a desktop publishing suite. Lightpens and CAD drawing software were also commercially produced, such as the Inkwell Lightpen and related tools. There were many prepackaged wordprocessors available for the Commodore 64, such as PaperClip and Vizawrite, but a popular DIY program was SpeedScript, which was available as a type-in program from Compute!'s Gazette. The MultiPlan spreadsheet application from Microsoft was ported to the Commodore 64, where it competed against established packages such as Calc Result. The first Lotus 1-2-3-like integrated software package for the 64 was Viza Software's Vizastar. A complete office suite arrived in the form of British made Mini Office II. In Germany and Scandinavia, many popular application programs were published by German company Data Becker. The typical C64 spreadsheet could store 64 columns and 255 rows, or 16,000 cells, but only 5-10% of them could be used at any one time, due to RAM limitations. Serious Commodore 64 business users, however, were drawn to GEOS. Due to its speed, ease of use, and full suite of office applications and utility software, GEOS provided a work environment similar to that of an early Apple Macintosh. Arguably the best office applications appeared on GEOS because it was graphically advanced and not limited by the Commodore 64's screen area of 40-columns. Being a fully-fledged OS, GEOS brought the arrival of many add-on fonts, accessories, and applications. It also supported most Commodore 64 peripherals and models of third-party printers. KoalaPad and Lightpen users could use GEOS too, which greatly increased the amount of clip art available for the platform. GEOS proved very popular because of low