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LLCSI

Products

Software Products by LLCSI

LLCSI develops focused software products for operational challenges that are difficult to solve with generic tools. Each product is designed as a long-term system, with careful attention to workflow, data ownership, reliability, usability, and secure integrations.

Product portfolio

Marketplace Operations Software

SellerHint

In DevelopmentComing Soon

SellerHint is a native macOS application designed for professional eBay sellers managing products, listings, connected stores, orders, inventory, marketing, schedules, messages, and business policies.

Its local-first architecture keeps core product information and working data on the Mac, while secure cloud services handle marketplace authentication and supported remote operations.

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Capabilities

  • Listing and product management
  • Multiple connected stores
  • Store-specific listing information
  • Inventory synchronization
  • Orders and fulfillment workflows
  • Marketing and campaign management
  • Scheduled listing tools
  • Seller messages
  • Business policies
  • Local-first product data
  • Native macOS interface

Product principles

What Makes Something an LLCSI Product

A product ships under the LLCSI name when it meets these conditions. They are also the questions we ask before starting custom work.

  • Solve a defined operational problem
  • Keep complex workflows understandable
  • Respect user and business data
  • Make product status and system behavior clear
  • Design for long-term maintenance
  • Avoid unnecessary complexity
  • Use native or local-first architecture where it provides meaningful operational value
  • Keep remote integrations secure and controlled

Additional LLCSI products are in development

New products will be added to this portfolio when they are ready to be publicly presented. We do not list unnamed or placeholder products.

Have an Operational Problem That Needs a Product?

If your operation depends on a workflow that no existing product handles well, that is the kind of problem we build for — as a custom system, or occasionally as a product of our own.

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