Our website provided a free download of Manta 1.1.4 for Mac. The actual developer of this free software for Mac is Hung Q. Le. The software lies within Business Tools, more precisely Finances.
From the developer:
Manta is a flexible invoicing desktop app with beautiful and customizable templates. With this program, you can create nice-looking invoices, estimates, and receipts. The tool supports drag-and-drop for reordering the items, which makes editing easier. The invoice can be exported to PDF to be printed or sent via e-mail.
You may want to check out more Mac applications, such as Mira, which might be related to Manta.