In Taiga you can make reports with some data and graph about your projects. To do that you can use your favorite spreadsheet app and the information about your user stories, tasks and issues in csv (comma-separated values) format.
You can obtain the information like a csv file or like a csv data url, one for epics, one for user stories, other for tasks and other for issues.
CSV Reports - Step 1
CSV Reports - Step 2
CSV Reports in LibreOffice
CSV Reports - Google Drive - Step 1
CSV Reports - Google Drive - Step 2
Remember that you can share the url but you should note that anyone who knows it can download a report with no further authentication.
You can expire an url by regenerating it because only the last generated url will be valid for each type. You can also delete it if you prefer.