I've been looking for a "lean" PM-software and found memoranda. It works well for me, as I'm the only "ressource" working on multiple projects. But I'm missing an important feature - and don't know whether it is available:

I need a weekly & or monthly calendar in which I can over-see what I have to do. This is important to be able to schedule projects. It could look like a simple gantt-chart, maybe? Any help?
Thank you!