1) Eucalypt 2) Eucalyptus 3) Online company 
GumTree is an open-source scientific workbench for performing scientific experiments under a distributed network environment. It provides a multi-platform graphical user interface for instrument data acquisition, online or offline data visualisation and analysis. GumTree is designed to provide a highly Integrated Scientific Experiment Environment ... Gumtree.com is an online classifieds and community website. Classified ads are either free or paid for depending on the product category and the geographical market. It is now the UK`s largest website for local community classifieds and is one of the top 30 websites in the UK, receiving around 8 million monthly unique visitors and reaching 17.9% ....
Eucalyptus.
Eucalyptus
Common name for the eucalyptus tree