1.JetBrains / kotlinThe Kotlin Programming Language. kotlinprogramming-languagecompilergradle-pluginmaven-pluginkotlin-library+3 moreKotlinNo license54K total6.5K forks+489 starsfrom 53,044 · score 6.19
2.Kotlin / kotlinx.coroutinesLibrary support for Kotlin coroutines kotlincoroutinesasyncKotlinAPACHE-2.014K total1.9K forks+53 starsfrom 13,769 · score 3.99