Piper

Piper provides its users with automatic digital receipts that can be viewed on its piperup.com website or mobile app. Put simply, it is about running an online store from catalog to checkout.

The natural audience is retailers and brands. They also list E-Commerce, so expect those to show up in the feature set. They are a very small team, 1 to 10 people, which usually shapes who they work with. You will probably talk to the people who build it, which is great until you need 24/7 support.

Piper is based in Washington, District of Columbia. More on piperup.com.

Things worth asking about: transaction fees, themes, and app ecosystem. Get the renewal terms in writing before the first invoice.

If you have worked with Piper, tell the next buyer what you paid and what surprised you. That is the part of this page we cannot write.