Here's a paraphrased version:

🔼The top altcoins that developers focused on in April have been revealed, with Ethereum not securing the top spot.

Despite a general downturn in the cryptocurrency market, developers are actively working on various altcoins, many of which are open source.

The list ranks altcoins based on their developer scores, with Optimism leading the pack followed by Hedera, Cardano, Chainlink, and Polkadot.

Notably, Ethereum is ranked lower than some altcoins with smaller market values. Optimism, the top-ranked altcoin, is notable for its focus on scaling Ethereum as a layer-2 blockchain solution. The ranking is based on data from cryptocurrency data provider Santiment, using GitHub profiles of altcoin projects.

However, it's important to note that developer activity may not directly impact cryptocurrency prices.