HelgaTheViking

It can be a hassle to fill out your billing address if you aren’t actually paying any money. This plugin removes the billing address fields from WooCommerce checkout when the cart total is 0, ie: Free.
Specifically the following fields are removed:
<ol>
<li>billing_address_1</li>
<li>billing_address_2</li>
<li>billing_city</li>
<li>billing_state</li>
<li>billing_postcode</li>
<li>billing_country</li>
<li>billing_phone</li>
</ol>
That’s it!
<h4>Support</h4>
Support is handled in the <a href="https://wordpress.org/support/plugin/remove-woocommerce-billing-address-fields-for-free-checkout" rel="ugc">WordPress forums</a>. Please note that support is very limited. Before posting a question, please confirm that the problem still exists with a default theme and with all other plugins disabled.
Please report any bugs, errors, warnings, code problems to <a href="https://github.com/helgatheviking/wc-remove-billing-address-fields/issues" rel="nofollow ugc">Github</a>

Remove WooCommerce Billing Address Fields for Free Checkout

It can be a hassle to fill out your billing address if you aren't actually paying any money. This plugin removes the billing address fields from  …

pushpress

Please report any bugs to support@pushpress.com
Existing PushPress Clients Only
This plugin is made for existing PushPress clients only. 
If you do not have an account alraed, please register now at https://pushpress.com/register
Features
<ul>
<li>ALL PAGES ARE 100% BUILT TO FIT INTO YOUR THEME. NO IFRAMES, AND NO JUNK CLUTTERING UP YOUR BEAUTIFUL WEBSITE.</li>
<li>Generate leads from your blog and have them tie directly into your PushPress system.</li>
<li>Integrate your schedule with your blog.</li>
<li>Allow your clients to reserve classes and checkin from your blog.</li>
<li>Automatically publish your workouts from PushPress to your blog.</li>
<li>Sell event and course tickets from your blog.</li>
<li>List and sell products from your blog.</li>
<li>MORE TO COME!</li>
</ul>

PushPress.com

Seamlessly integrate your PushPress account with your WordPress Blog.

Remove WooCommerce Billing Address Fields for Free Checkout vs PushPress.com