Synergy is developed and maintained on a voluntary basis during spare time and provided free of charge. If you would like to assist the developers in their efforts, please click the donate button below to make a donation through PayPal's secure site. If you'd like to donate hardware, please email synergy-donate@groundhog.pair..no_spamcom. Note that this address has a hidden ".no_spam" near the end to fool spam bots; if you cut and paste the text be sure to remove it.