solutionsbysteve

Solutions Invoice Manager is an all in one invoice management system. Create invoices for your customers and allow them to view them password protected on your site. There is also built in support for emailing customers with multiple templates including custom, payment reminders, services rendered, and more.
This plugin is free to use and comes with the GPLv2 or later license. With that said this plugin lives solely on donations. If there is no monetary value in coding this plugin than development will cease to exist. If you would like you can donate here or use the button below.
If you would like to make requests for specific features please feel free to do so at http://solutionsbysteve.com/contact/ Remember, these are simply requests and no guarantee that it will fit in to the scope of the plugin but will absolutely be taken into consideration.
Donations 
Please feel free to make feature requests with your donations. DO NOTE: these are simply requests and no guarantee that it will fit in to the scope of the plugin but will absolutely be taken into consideration. 
http://bit.ly/Donate-SolutionsInvoiceManager

Solutions Invoice Manager

Manage invoices on your very own wordpress installation. Supports emailing, PDF viewing and Reports.

Andrew Munro

Easy Digital Downloads

This plugin requires <a href="https://wordpress.org/plugins/easy-digital-downloads/" title="Easy Digital Downloads" rel="ugc">Easy Digital Downloads</a> v1.9 or greater.
Many customers use Easy Digital Downloads to sell “services” rather than “downloads”. We get many requests to remove the “no downloadable files” on the purchase confirmation page, because their services do not have/need files attached. This plugin fixes that.
It will allow you to select individual downloads which are services, or an entire category which houses your services. If a download is marked as a service, or belongs to one of the categories you selected, the the purchase confirmation page will not show “no downloadable files” for that particular download. If your service does have a file attached, it will still show the file. It also slightly modifies the email receipt so it does not include a dash next to the name.
So far, this plugin allows you to:
<ol>
<li>Hide the “no downloadable files found” message on the purchase confirmation page when your service has no download files attached to it</li>
<li>Hide the extra dash in the purchase receipt email when your service has no download files attached to it</li>
<li>Select categories from the plugin settings that house your “services”. Any download within the selected categories will be marked as a service</li>
<li>Mark downloads as services on a per-download level. A checkbox is added to the download configuration metabox</li>
</ol>
Suggestions welcome for future features. Developers can take advantage of the _edd_das_enabled meta_key and extend the plugin to suit their needs.

EDD Downloads As Services

Mark Downloads As Services in Easy Digital Downloads

Solutions Invoice Manager vs EDD Downloads As Services