The latest version of Excel is Excel 365. It was released in 2019 and is the successor to Excel 2016. Excel 365 is a subscription-based service that includes a variety of features, such as real-time collaboration, access to cloud storage, and the ability to use Excel on multiple devices.
Excel 2007 was released in 2007 and is the predecessor to Excel 2010. Excel 2007 was the first version of Excel to use the Ribbon interface, which is the current interface used in all versions of Excel.
Excel 2016 was released in 2016 and is the predecessor to Excel 365. Excel 2016 includes a number of new features, such as the ability to create and edit charts and graphs in 3D, and the ability to use Power Pivot to analyze large data sets.
Excel XP was released in 2002 and is the predecessor to Excel 2003. Excel XP was the last version of Excel to use the classic interface, which is the interface used in all versions of Excel prior to Excel 2007.