All organizations that are added to your Data Collector can also be exported. The Export button is found on top of the page in the Data Collector Overview:

Choose which columns that should be included in the export and what type of separator you want to use for the .csv-file (comma separated text file that can be opened in Excel). After you have made your decisions, hit Download CSV.

Note: The export function only exports the organizations that matches the filters that you have applied. To remove all filters you can click the Clear all filters button that appears to the left of the Export button when filters are applied.