Quasar-0.2.0-Miniconda-x86_64.exe - an installer that can be used without administrative privileges (64 bit).
Quasar-0.2.0.dmg - an universal bundle; copy it into your Applications folder.
On other platforms, such as Linux, you will need a fairly recent python3 installation. We highly recommend that you create a python virtual environment first. There, install Quasar with pip:
pip install quasar
The above command will install all dependencies. Then, run Quasar with:
python -m quasar