Arnot

That might have been https://learnxinyminutes.com. It's pretty useful as a quick reference if you're switching languages a lot.

I was there on a holiday a few weeks ago. While they told us that malaria isn't a problem anymore, they still warn tourists to protect against mosquito bites as they can still carry dengue fever. From a quick google it seems that malaria and dengue are spread by different mosquitoes, which might be why only one if the two is gone now.