OptiPNG vs ZK Spreadsheet
A side-by-side look at OptiPNG and ZK Spreadsheet. For an in-depth review of either product, follow the links below.
OptiPNG
Photos & Graphics
OptiPNG is an open-source PNG optimizer that reduces the file size of PNG images while preserving transparency. It works by applying lossless compression and interpolation methods.
pngoptimizercompressiontransparency
ZK Spreadsheet
Office & Productivity
ZK Spreadsheet is an open-source spreadsheet software that is fast, lightweight and feature-rich. It is written in Java and offers Excel-comparable functions, charts, pivot tables, collaboration features and data bindings.
spreadsheetexcelchartspivot-tablescollaborationdata-binding
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