Peaka is a zero-ETL data integration platform that can integrate all data sources (such as relational and NoSQL databases, SaaS tools, and APIs) into a single data source without building complex ETL pipelines. Its main functions include federated querying, real-time stream data ingestion, real-time data replication, API to SQL conversion, NoSQL to SQL conversion. Its advantages include a streamlined architecture, simple construction, low operational costs, and no risk of downtime. It is suitable for teams that want to quickly integrate multi-source data and improve data usability. It offers both free and paid versions.