If you use my TYPO3 extensions (realurl, dd_googlesitenap, sentry, etc), please, consider donating. It takes significant time to write quality code. Donations allow me to spend more time on coding.
Here is a PayPal donation button for private persons:
Note: I cannot provide invoices for PayPal donations!
Companies (not private persons!) can have a formal invoice to pay via bank account to a EU-based company, which I own. Please, contact me for more information.