There are a surprising number of tools for data visualization and analysis that are available at no charge. Google Refine can be described as a spreadsheet on steroids for taking a first look at both text and numerical data. DataWrangler is designed for cleaning and rearranging data so it’s in a form that other tools can use. Data Wrangler is currently alpha code, and its creators say it’s “still a work in progress” The tool is available in alpha-code, but it’s still not ready for a desktop version.”]
Source: https://www.csoonline.com/article/2128301/22-free-tools-for-data-visualization-and-analysis.html