Koalas: pandas API on Apache Spark

Koalas provides a pandas-compatible API that runs on Apache Spark, allowing users familiar with pandas to work with large, distributed datasets. The current version is 1.8.2. Its development as a standalone library has ceased, as its functionality has been officially integrated into PySpark as 'pandas API on Spark' starting with Apache Spark 3.2. Maintenance releases are infrequent, primarily addressing critical bug fixes.