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Because Excel is widely used, it has been attacked by hackers. While Excel is not directly exposed to the Internet, if an attacker can get a victim to open a file in Excel, and there is an appropriate security bug in Excel, then the attacker can gain control of the victim's computer. [121] UK's GCHQ has a tool named TORNADO ALLEY with this purpose.
Microsoft Excel uses dedicated file formats that are not part of OOXML, and use the following extensions:.xlsb – Excel binary worksheet (BIFF12).xla – Excel add-in that can contain macros.xlam – Excel macro-enabled add-in.xll – Excel XLL add-in; a form of DLL-based add-in [1].xlw – Excel work space; previously known as "workbook"
Despite being released in the same month, the new Office user interface in Word, Excel, PowerPoint, and Outlook is only available to Office 365 subscribers, not perpetual Office 2019 licenses. [22] [23] [24] Office 2019 for Mac received updates until October 10, 2023, when it reached the end of support and stopped receiving updates. [5] [6]
Microsoft Office 2021 (third release codenamed Office 16) is a version of the Microsoft Office suite of applications for the Microsoft Windows and macOS operating systems.It was released on October 5, 2021. [6]
WordPerfect Office Quattro Pro – for MS Windows. Was one of the big three spreadsheets (the others being Lotus 123 and Excel). EasyOffice EasySpreadsheet – for MS Windows. No longer freeware, this suite aims to be more user friendly than competitors. Framework – for MS Windows. Historical office suite still available and supported.
Tiki Spreadsheet Tiki Slideshow with S5 format: Tiki Notepad Tiki Draw via SVG-edit: Tiki Draw via SVG-edit: Tiki Draw via SVG-edit: Tiki File Gallery No Tiki Trackers Tiki Trackers, Tiki Wiki and Tiki Task No No No No WordPerfect Office: WordPerfect: Quattro Pro: Corel Presentations: WordPerfect Lightning: Corel Presentations: Corel Paint Shop ...
Microsoft Office 2013 and later fully support ISO/IEC 29500 Strict, [7] but do not use it as the default file format because of backwards compatibility concerns. [8] The ability to read and write Office Open XML format is, however, not limited to Microsoft Office; other office products are also able to read & write this format:
OpenEXR – a high dynamic range imaging image file format, released as an open standard along with a set of software tools created by Industrial Light and Magic (ILM). OpenRaster – a format for raster graphics editors that saves layers; PNG – a raster image format standardized by ISO/IEC; QOI – a simple, fast and lossless open source ...