Set Drift to about 30%. Instant analog chorus effect. Do not exceed 70% unless you want atonal chaos.
Start with the default saw wave. Turn down the filter cutoff completely. 4orm-vst-r Download
This is the gold standard. Go to archive.org and search for "4orm vst". Look for collections labeled "Analog Synth Freeware 2005-2008." Since the plugin was freeware, the Archive's "Community Software" section is legally safe. Check the uploader's reputation and user comments before downloading. Set Drift to about 30%