Shopify is one of the best commerce solutions now. If you want to add some tools to make it better, here is a list of the best free shopify apps.
1. Soundest – Email Marketing for Ecommerce
This app is one of the best email marketing tools for Shopify
More info
2. Quick View
This app gives your shoppers a quick access to product preview in one click without reloading the whole site. The Quick view (Quick Shop) app will not only reduce the shopping time but also bring the convenient experience to shoppers. Your shoppers can view product details quickly without leaving the catalog navigation. This makes browsing products easier and faster, which encourages sales. Products may be added to their cart from the Product Quick View page
More info
2.Yotpo Product Reviews
helps Shopify store owners generate a ton of product reviews which you can use to drive new traffic and sales through social, email and other channels
3. Facebook Store
This app allows you to sell products directly on your Facebook Page.
Your customers can also share your products with their friends and followers allowing you to drive traffic to your store
More info
4. Persistent Cart
This is a great app, It reduces the abandoned cart rate, so it inscrease your revenue. This app is also easy to install and use as well.
More info
5. Aftership
This app is 100% free. It helps you track unlimited shipments. Support: UPS, USPS, Fedex & 200+ couriers
More info
6. ShopPad
This is most popular app in Shopify app store. This app is the complete solution to optimize your desktop store for the iPad, iPhone and Android without the hassle or expense of maintaining different sites.
George Steve
Nice collection of different Shopify apps I really liked I have used few more Shopify apps and i want you should add those in your list too like kit for running your Facebook ads, Mailchimp for emails and at last CareCart for recovering your abandoned carts. Carecart.io is one of the best Shopify apps to recover your abandoned carts.
https://apps.shopify.com/care-cart