Cakemail - Email marketing and transactional emails that deliver. Try it for FREE!
QuickMark - QuickMark makes everything possible.
Hatchbuck - SMB sales and marketing software
Barcode & QR Code Scanner - A free app which allow to read and generate barcodes for Android.
Salesfusion - Salesfusion provides an easy to use marketing automation platform that allows sales and marketing teams to be successful.
ZXing - Barcode Scanner for Android