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 (ISEE), allowing interaction between different components within the workbench. Several instrument control server systems including TANGO, EPICS and SICS have been adapted to GumTree. Current developments include acquisition, control and analysis on neutron and synchrotron beamlines. In the future it will be extended telescope control and other scientific instruments with distributed hardware.