There are more than 1000 altcoins in the market. What do you think for the most stable altcoins?
Open Coinmarketcap here
https://coinmarketcap.com/All on top 30-40 are stable coins. You will see some movement in ranking, but all have gained value in last 12 months.
Ripple is a popular Altcoin as a coin that has a popular development and becomes a coin of pride from year to year. as we know when coins have a stable development capable of bringing coins into expensive coins and increasing their position as the best coin.