DBConvert Studio - Database migration/ sync software for data conversion and replication.
Landofcoder Multivendor Marketplace - Magento 2 Marketplace Extension / Magento 2 Multi-Vendor Extension helps to convert your eCommerce store into a completely active multi-vendor marketplace like Amazon, Etsy or eBay, etc with multiple vendors and customers conducting transactions.
Full Convert - Full Convert is industry standard for database migration. Supports 40 database formats and offers unparalleled speed and customization.
CS-Cart Multi-Vendor - On-premises eCommerce marketplace builder
Intelligent Converters MSSQL-MySQL Sync - MSSQL-MySQL Sync is a program to synchronize data between MS SQL or Azure SQL and MySQL databases.
Yo!Kart - A Tailor-made Online Marketplace Software