What are the top 10 marketplace platforms available today, and how do they compare across key features such as multi-vendor management and onboarding, commission and payment processing workflows, product and service listing capabilities, scalability for high-traffic and global marketplaces, customization and flexibility (no-code, low-code, or headless architectures), integration with ERP, CRM, and third-party services, security and compliance standards, analytics and reporting capabilities, ease of use and deployment, cost-effectiveness, and suitability for startups, SMBs, and large enterprise marketplace ecosystems?