Opencart Multivendor Module & Extension adds comprehensive Marketplace capability into your existing eCommerce opencart store. Opencart Multivendor allows store admin to manage each product associated with a third-party vendor. Opencart MultiVendor Marketplace from Purpletree It supports Opencart version 3.x and 2.3.x.

Sellers can manage products
Add/edit/delete products by sellers and admin
The seller has full control over own products
All the fields available in opencart admin are available for sellers too
Bulk import of products is also possible
The seller can do a bulk import using an excel sheet
Admin can also do the bulk import on behalf of a seller
The product entered by seller becomes a standard opencart product
Admin has the option to approve a product before it appears on the website

Advanced shipping rules for sellers
Sellers can have fixed shipping fee or flexible tiers
Tiers can be defined based on parameters
Based on zip code, weight, country
Option to define shipping per order or per product
Admin can set commission on shipping fees also
Shipping fee is paid out by admin with sales payouts

Advanced Vendor Panel
Vendors can manage all products and orders
Dashboard for a summary of orders, commission, payouts
Shows summary view as well as a detailed view
Filters available for easy filtering on every page
Sales report
Commission report
Payouts report
The vendor can manage the whole lifecycle for any order

Multi-Language Support
Comes with 18 languages in-built
All text from the extension appears in 18 languages
No need for any language pack
Easy to add any new language in the future

Multi-Vendor API for Opencart
API for Multi-Vendor integration
All features and data from the Multi-Vendor application is available via the API
Useful for creating mobile applications
It provides easy integration with external systems like CRM, ERP, etc.
Detailed documentation available for API specification
Data available in a standard format like JSON

Users can become Sellers
Any user can opt to become a seller/vendor
Admin can choose if approval is required for becoming a vendor
Seller options available in separate menu in user dashboard
Convenient single view for all user data
Set registration approval

Store ratings and reviews
Users can rate the sellers they buy from
Users can also write reviews for sellers
Seller rating is visible on the store page
Admin can manage all reviews
This is in addition to the opencart feature of product reviews/ratings

Access all stores
The “Browse Sellers” page shows the listing of all sellers
Users can browse sellers and/or send inquiry to them
Recent products from all sellers are also displayed
Sorting and pagination options are available

https://www.purpletreesoftware.com/multi-vendor-marketplace-opencart.html