ZetExcel

ZetExcel offers an Excel library for .NET to create, modify, and convert Excel documents across multiple platforms. Put simply, it is about building software for you when nothing off the shelf fits.

The natural audience is companies with a specific process to automate. Related areas on their profile: Software Engineering. As a small company team themselves (11 to 50 people), they tend to serve customers of a similar scale best. You will probably talk to the people who build it, which is great until you need 24/7 support.

ZetExcel is based in Santa Clara, California. Their site is zetexcel.com.

Our checklist for this category: portfolio relevance, who owns the code, and how they handle changes. Get the renewal terms in writing before the first invoice.

The facts above come from public company records. The score will come from people like you. Used ZetExcel? Rate it.