Built for modern sellers
Run every marketplace from one command center.
SellCastle is building a secure operations platform for Walmart and Amazon sellers—bringing catalog, inventory, orders, fulfillment, and profit visibility into one focused workspace.
See what we’re building
Secure foundation in development
Connected channels
All stores
Today
Operations activity
View all
Product direction
Operational clarity, without the spreadsheet sprawl.
One secure workspace
Keep stores, users, and operational data separated by business from the beginning.
Seller-first workflows
Bring the decisions sellers make every day into a calmer, more focused operating system.
Controlled automation
Start read-only, make actions auditable, and keep every important change under human control.
In private development
A stronger home for marketplace operations.
SellCastle is being built carefully from the ground up. More product details will be shared as the private preview progresses.