Ethereum continues to lead in blockchain developer activity, showing a 12.18% increase in value and adding 1.3K new users. In contrast, BNB Chain and Polygon have seen declines, with their developer activity dropping by 5.14% and 13.52%, respectively. User numbers for BNB Chain fell to 32.5K, while Polygon's user base decreased to 25.4K. Other platforms such as Cosmos, Optimism, and Arbitrum reported varied results, highlighting the current market's volatility.