pip is an install tool for Python, similar to but more modern than easy_install. It is now the preferred tool for installing TiddlyWeb and associated plugins because it deals better with namespace packages and resolving requirements.
See: http://pypi.python.org/pypi/pip
If pip is not available on your system it can be installed following instructions at the link above, or if you have a working easy_install
:
sudo easy_install -U pip
pip and virtualenv make is possible to install TiddlyWeb without root access.