Most of the workflows I installed is from this Github repo.
https://github.com/zenorocha/alfred-workflows
However, I did find those workflows are being updated very frequently, so manual update is somehow tedious.
It would be better if Alfred can implement a way to check whether remote alfredworkfllow files have been updated or not, and autoupdate them if necessary.
Even better, implementing a Alfred workflows package manager would help both autoupdate and discover new packages.