What is the best inventory management software for small businesses?

For retail: Shopify or Square manage inventory alongside POS. For warehouses: inFlow ($89/mo) or Cin7 Core ($349/mo) handle multi-location tracking with barcode scanning. For light needs: Sortly (free for 100 items) with photo-based inventory. Always pick software that integrates with your existing POS and accounting tools — double-entry inventory kills productivity.