Tools that are used to manipulate data in a particular organization are categorized as Data tools.
Force.com Data Loader: Data Loader is a client application for the bulk import or export of data. It is used to insert, update, delete, or extract Salesforce.com records. The Apex Data Loader can move data in or out of any type of Salesforce.com record, including opportunities and custom objects. When importing data, it reads, extracts, and loads data from comma-separated values (CSV) files. When exporting data, it outputs CSV files.
The Force.com API is required to perform operations in Data Loader. A wizard interface that is easy to use and an alternative command-line interface are available in Data Loader. It is a support for all the custom and standard objects and it provides detailed success and error log files after every functionality. You can download the Data Loader from Setup | Administer | Data Management. More details about the Data Loader can be found at https://developer.salesforce.com/page/Data_Loader.