Algostore provides next services for migration data from Magento 1.x.x to Magento 2.x.x native functionality:

1. Migrate Product Attribute Sets, Product Attribute Groups, Product Attributes
2. Migrate Product Categories recursively (full category trees)
3. Migrate Products (Simple Products, Configurable Products, Grouped Products, Virtual Products, Bundle Products and Downloadable Products)
4. Migrate Customer Groups and Customers
5. Migrate Sales Data: Sales Orders, Sales Quote, Sales Payments, Sales Invoices, Sales Shipments, Sales Credit Memo, Sales Rules & Coupons
6. Migrate Product Reviews, Rating data
7. Migrate Tax rules, Tax Zones and Tax Rates

For all data from 3d party plugins we can do custom migration