If you're interested in a non-proprietary toolflow, you can try taking a look at VPR (http://www.eecg.toronto.edu/vpr/). It's an academic place and route tool out of the University of Toronto. You may still need to use some parts of the proprietary toolflow. I've never used it to actually run on an FPGA, but it's a popular tool for academic research in FPGA design and EDA algorithms.