Digital Agreement and Quote Form

General information for the business: Agreement form
Description of requirements/functionality: digital signatures should be accepted
OS requirements: Windows, Mac OS
Extra notes: I want to crete a customised software by which we can. Excuse my poor knowledge of software languages but guide me on that ..
1) quote clients easily
same as a style of attachment
so that we can type and client can agree on email

2) agreement which can of the same style followed by digital signatures
Everything is customised and we can type up the quote and prepare
More info disclosed to the successful bidder