On January 21, CryptoDiffer released the ranking of the most actively developed blockchain projects on Github on a daily average in 2019. Among them, Cardano, which has just launched the testnet recently, ranked first. The Cardano team has released the Sydney testnet on December 13. Ethereum followed closely behind, and the Ethereum team has been busy pushing the Ethereum 2.0 update recently. The third most active developer on Github is Poca's parallel test network Kusama.