I'm just curious Obi - how long did you use Gantter for?
I really like that I can log in via Gmail credentials, use Google Drive for storage and the fairly simplistic layout of the schedule (both column and chart). There do seem to be a few platform rendering issues in Safari at least (scrolling down the column seems to only work if you use the cursor in a row to manually move down for example).
I recently purchased some server space and I wondered whether there might be any other open source software packages that would allow me to exploit my existing storage space rather than signing up to a plan?
It's all new to me but for the purposes I want (assessing business feasibility), marking tasks against users and having agreed timescales are about the main criteria for now.