Forestle was an ecologically inspired search engine created by Christian Kroll in Wittenberg, Germany, in 2008 and discontinued in 2011.
Forestle supported rainforest conservation through donations of ad revenue and aimed to reduce CO2 emissions.
It guaranteed to donate 90% of its advertising revenue to the Adopt an Acre program of is partner organization The Nature Conservancy.
The report about Forestle in a major German newspaper[4] end of February 2009 transiently boosted the number of search events on Forestle.org within a week (3 March 2009) close to its all-time maximum.
Forestle also provided several browser plugins, could be added to iGoogle and was available in English and German (full versions) as well as in Spanish and Dutch (details partially in English).. On November 27, 2009, Forestle received the Utopia Award[8] as an exemplary organisation enabling us to live more sustainably.