What is a sku (stock keeping unit)?

A unique alphanumeric code assigned to a specific product to track it for inventory purposes. A single product can have multiple SKUs if it comes in different sizes, colors, or other variations.

Who uses one?

Product businesses tracking stock and orders

What does it cost?

Pricing varies. The cheapest provider in our Top 11 starts around $999/mo. See the cheapest providers ranked.

How do I pick one?

Read the full methodology for our 9.4-point scoring framework, then look at the canonical The 11 Best Inventory Management Software. If you want a slice of the ranking by price, fit, or compliance, jump to: cheapest · highest-rated · fastest onboarding.

Source: Top 11 The 11 Best Inventory Management Software, verified June 9, 2026.