Top data migration tools include Informatica PowerCenter, Talend Data Integration, AWS Database Migration Service (DMS), Azure Data Factory, Fivetran, Matillion, Airbyte, Oracle Data Integrator (ODI), IBM InfoSphere DataStage, and SAP Data Services. They differ in capabilities such as data extraction, ETL/ELT processing, schema mapping, real-time replication, data validation, and support for cloud, on-premises, and hybrid migrations. Informatica, Talend, and IBM DataStage are strong enterprise tools for complex large-scale migrations, while Fivetran, Airbyte, and Matillion are popular for modern cloud-native and automated data pipelines. AWS DMS and Azure Data Factory are ideal for cloud ecosystem integrations and low-downtime migrations. Overall, these tools vary in scalability, automation, security/compliance (SOC 2, GDPR, ISO), deployment ease, and performance, making them suitable for finance, healthcare, retail, SaaS, and enterprise data modernization projects.