Wunderlist again. Currently this is the only Microsoft thing that I use – apart of Windows servers involved in my DevOps job.
Wunderlist killed its app for Ubuntu long time back.
And then it was bought by Microsoft, so I hardly think there will be a Linux app ever again. For a long time I didn’t use Wunderlist, but I thought of giving it a try once again. I figured out that pinning Wunderlist tab on Firefox works to some extent.