I've tried multiple tools for making website popups, but hands down Getsitecontrol is the best one of them by far. Here is why:
- making a popup, survey or a weblayer is super quick, because the UI is very clean and fast
- higly customizable design which actually looks good and modern (color, image, text, allingnment)
- rich behavior and targeting options (+API for advanced users)
- you can A/B test different popups for better results
- events also go to your Google Analytics automatically, so you can analyse the results even further
Nothing to dislike here, but I would add even more (and larger format) templates so users can experiment.
Subscription popups and promotion of offers.