SeekTable
SeekTable allows you to perform ad-hoc analysis of business data with pivot tables and charts. It is very easy to use, it is enough to upload your dataset (CSV/TSV/Excel file) and build a report. Tool can be used for real-time reporting by large datasets too as it can connect directly to SQL databases or MongoDb; data is not imported - SeekTable generates and executes database query on-the-fly, and you always get up-to-date numbers. Even if you're not familiar with pivot tables you still can get answers with SeekTable "Ask a question" feature which allows to build a report in a search manner by entering queries like "total sum by country and product category".
