Top cloud migration tools include AWS Application Migration Service (MGN), Azure Migrate, Google Cloud Migration Center, VMware HCX, CloudEndure, Carbonite Migrate, Zerto, Fivetran HVR, Oracle Cloud Migrations, and CloudFuze. They differ in capabilities such as workload discovery, application dependency mapping, automated data and app migration, real-time replication, and support for rehosting, replatforming, and hybrid cloud transitions. AWS MGN, Azure Migrate, and Google Cloud Migration Center are best for native cloud migrations with deep platform integration, while VMware HCX and Zerto excel in hybrid and multi-cloud environments with minimal downtime. Carbonite Migrate and CloudEndure are strong for continuous replication and disaster recovery use cases. Overall, these tools vary in scalability, security/compliance (SOC 2, GDPR, ISO), deployment ease, downtime reduction, and suitability for enterprises, SaaS providers, financial institutions, and large-scale digital transformation projects.