Some say altcoins pump once, then it´s over forever. But that´s not always true. If the coin has real technology and usage behind it we could see it go to the moon in the future. Which altcoins have the best potential to stick around and create gains in the future?
Messari.io's screener can help you to filter altcoins.
https://messari.io/screenerYou have to create a free account to customize the filter with % Down from ATH. Other parameter for the filter can be added for your interest (volume, marketcap, etc.)
After you get some from a customized filter, let's visit their Github to see developer activities, and Twitter accounts to see how active they interact with communities. Altcoins are pumped and dumped with news.