This chrome plug-in is a very easy data mining extension. Scrape data online and get it into a spreadsheet quickly.

Find out if your data is reliable. DataProofer is built to automate the process of checking a dataset for errors or potential mistakes.

Data Portals is a library with websites that will provide you with open source datasets from all over the world.

Tabula extracts the data from your PDF and converts it into a CSV or Excel so you can edit the data.

This converter will turn your dataset into a different filetype so you can upload it to make any graphic you want.

Find open source datasets from all over the world. Just type in a keyword and the tool will find datasets according to your subject.