A lot of people give up when they see Citrix does not offer a 64-bit XenApp client for Linux. I have been running the 32-bit version on my Ubuntu Lucid (amd64) laptop with no problems. Here is how you do it...

1. Install the prerequisites:

sudo apt-get install libxaw7 libmotif3

2. Download the 32-bit XenApp client in .deb format

3. Install the client, forcing it to ignore architecture:

sudo dpkg -i --force-all icaclient*.deb

4. That's it!

The binary is /usr/lib/ICAClient/wfica. You will need to select this the first time you try to run Citrix, but you can check the box to always use this program in the future.