These are top and recommended Testimonials Review Extensions For Magento Ecommerce:

1. Landofcoder Testimonials Extension for Magento 2: This extension helps to impress your customers and enhance your store credibility by using our Magento 2 testimonials extension. Using this Magento testimonials module, you can monitor customer's review and testimonial easily on a daily basis. Thanks to this you can convert more sale for your store.

Link: https://landofcoder.com/testimonial-extension-for-magento2.html

2. Magebuzz Free Magento 2 Testimonials Extension: MageBuzz always provides support for customers who have installed Magebuzz Free Testimonial Magento module. Feel free to leave a review for the company and the extension so we can offer you better products and services in the future.

Link: https://www.magecloud.net/marketplace/extension/magebuzz-free-testimonial/

3. Elsnertechnologies Magento 2 Testimonials Module: This is an extension that will help to add text testimonial. Customer would be able add testimonial. Guest would be also able to add testimonial. every thing would be configurable from admin. Admin will allow customer and guest to add testimonial.

Link: https://codecanyon.net/item/magento-2-testimonial/18532977