HEATKEYS

siwapp is an open source web application meant to help manage and create invoices in a simple, straightforward way

OStatic

PHP Invoice is most powerful online web based billing / invoicing system yet easy to use

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Invoicing software with a marvel of simplicity

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Web tools for everyone! Reliable support, excellent coding, thousands of happy clients - PHPjabbers.com

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Edraw is a powerful yet easy-to-use program for creating flowcharts, organizational charts, network diagrams, business presentations, building plans, mind mapping and lots more.