We are looking to develop a very complete cloud web app similar to the ZOHO suite the following features:
- with invoice (very much like zoho invoice) (with international CC payments and paypal)
- Inner chat (Slack like)
- Project Manager (similar to basecamp or meistertask)
We are open to technology proposals, don't have a programming specific requirement.
Proposal must include server recommendation, wireframe/flowchart, design reviews and testing stages.