SequoiaView is described as «Create a visual representation of the amount of space each file is taking on your hard drive. It creates a «squarified treemap» that makes it easy to see where all your space is going» and is a disk usage analyzer in the system & hardware category. There are more than 50 alternatives to SequoiaView for a variety of platforms, including Windows, Linux, Mac, BSD and KDE. The best alternative is WinDirStat, which is both free and Open Source. Other great apps like SequoiaView are WizTree, TreeSize, ncdu and Baobab Disk Usage Analyzer.SequoiaView alternatives are mainly Disk Usage Analyzers but may also be System Cleaners. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of SequoiaView.