These days I finance my work on RRDtool by developing customer specific add-on features and support contracts. Since this work is focused towards the customers requirements this does not leave much room for general improvement. If you profit from RRDtool and want to support the project as a whole, you could become a sponsor!
2013 Gold Sponsors
2013 Silver Sponsors
Other means for making Tobi happy
If you like RRDtool and want to show me your appreciation personally, have a look at my media wishlist. Please put your eMail address into the the message area, so that I can thank you for your present. I do keep a list of people who sent me stuff. You can look at it here.