Ecosyste.ms: Packages
An open API service providing package, version and dependency metadata of many open source software ecosystems and registries.
repo1.maven.org "playground" keyword
de.fxnn:brainfuck 1.3.0
Playground for Brainfuck interpreters in Java.4 versions - Latest release: over 5 years ago - 1 stars on GitHub
org.webjars.npm:kotlin-playground 1.11.2
WebJar for kotlin-playground1 version - Latest release: over 5 years ago - 380 stars on GitHub