GalalAly

Still a beta version.
A WordPress and WooCommerce plugin/extension that allows users to add their own currencies.
You can also define conversion rates for your custom currency (if it is not supported by PayPal) to use PayPal gateway through another supported currency like USD or GBP.
The officially supported gateway for conversions is the PayPal gateway that comes with WooCommerce by default.
Refunds are not yet supported.
New version supports only WordPress 4.0 and WooCommerce 2.2

WooCommerce Custom Currencies

Add your currency to list of supported currencies in WooCommerce

Wahyu Wibowo

Sorsawo Digital

This plugin lets you add custom currency to Easy Digital Downloads. This plugin requires <a href="https://wordpress.org/plugins/easy-digital-downloads/" rel="ugc">Easy Digital Downloads</a> v1.9 or greater.

Custom EDD Currency

Adds custom currency to Easy Digital Downloads.

WooCommerce Custom Currencies vs Custom EDD Currency