tophermade

A very quick, and simple invoice generator. Quickly create and maintain invoices for clients, distributors, etc right from your WordPress based site.

sprInvoice

A static, fully responsive invoice template generator for WordPress.

paystack

A Memberpress Payment Gateway integration with Paystack for membership subscriptions.
This addon helps admins and webmasters using Memberpress to accept subscription payment via Paystack gateway. This addon has all the settings for development as well as for production usage. Its easy to install, set up and effective. 
A few notes about the sections above:
<h3>Detailed List of Gateway Settings</h3>
Below you will find explanations for every setting that you can find for your Paystack Gateway as a reference for both during and after you have setup your gateway:
<ul>
<li>
Name – The name users will see when choosing this gateway option during registration. 
Gateway – This should be set to “Paystack” and will not show up on the frontend.
</li>
<li>
ID – ID of your gateway used in database and to be entered if importing subscriptions for this gateway as outlined here.
</li>
<li>
Show Payment Label – When checked or unchecked, this will show or hide the Name you entered for this gateway option.
</li>
<li>
Show Payment Icon – When checked or unchecked, this will show or hide the Paystack Credit Card symbols for this gateway option.
</li>
<li>
Show Payment Description – When checked or unchecked, this will show or hide the description for this gateway option.
</li>
<li>
Test/Live Secret Key – This is where you will enter your Paystack Secret Key for either Test or Live Mode. Before entering your Test Secret Key, be sure to check the Test Mode box in your Paystack gateway in MemberPress.
</li>
<li>
Test/Live Public Key – This is where you will enter your Paystack Publishable Key for either Test or Live Mode. Before entering your Test Publishable Key, be sure to check the Test Mode box in your Paystack gateway in MemberPress.
</li>
<li>
Test Mode – Check this box if you would like to use Paystack in Test Mode for Testing.
</li>
<li>
Force SSL – Use this option if your site has the option of being viewed in http and https. This will automatically switch to https when a user is going to pay so that the transaction is secure.
</li>
<li>
Send Debug Emails – Only enable this option if you are having issues with your Paystack gateway and know how to interpret debug emails or have been told to enable them by our support team. Enabling this option will send out about 5 separate debug emails to your email found in your General WordPress Settings.
</li>
<li>
Paystack Webhook URL – The Webhook URL is used to communicate data between your Paystack account and MemberPress. It must be entered correctly for either Test or Live Modes to work correctly. Use the clipboard icon to copy over your Webhook URL. Then go to your Paystack Dashboard > Settings > API Keys & Webhooks.
</li>
</ul>
<h3>Capabilities of the Paystack Integration</h3>
<ul>
<li>Process One-Time Payments</li>
<li>Process Recurring Payments</li>
<li>Process Refunds</li>
<li>Cancel Recurring Payments</li>
<li>Change Credit Card for Recurring Subscription</li>
<li>Pause Recurring Payments</li>
<li>Resume Recurring Payments</li>
<li>Process Free/Paid Trial Periods</li>
<li>Credit Card Expiring Reminders Supported</li>
</ul>
<h3>Contribution</h3>
Here you can browse the source, look at open issues and keep track of development.

Paystack MemberPress

A Memberpress Payment Gateway integration with Paystack for membership subscriptions.

sprInvoice vs Paystack MemberPress