Here is a list of best selling Magento 2 extensions by Magezon:

1. Blue Form Builder

Create any Magento 2 form literally in a few minutes, not hours with simple drag & drop interface.
A feature-rich form builder for Magento 2 that can meet almost all your requirements: Fo
- Simple and intuitive drag & drop custom form builder.
- Easy to add file upload form field.
- Auto emails notifying admin and customers.
- Form security with Google reCaptcha and Magento 2 Captcha.
- Easy to embed forms wherever with multiple display types.
- Multi page Magento 2 forms.
- 10+ ready made templates including contact form, feedback form, survey form, booking form, newsletter signup form.
- Custom inline validation.
- Easy to customize form layouts and styles.
- Dozens of plugins: Conditional Logic, PDF, Form Products, Report, MailChimp, etc.
- Responsive and Ajax frontend design.
- Submission management in one page.
- 30+ form elements.
- Form prefilling support.
- Predefined variables form dynamic email notifications.

Download Magento 2 Form Builder extension: https://www.magezon.com/magento-2-form-builder.html
Video:
https://www.youtube.com/watch?v=NGzcn7Gmr60

2. Ninja Menus
https://www.magezon.com/magento-2-mega-menu.html

Easy to create any menu you can imagine with simple drag & drop Magento 2 mega menu extension:
- Unlimited menu levels
- Drag & drop builder
- 3 menu types: horizontal, vertical, accordion
- 7 elements supported to create any menu
- Fully responsive frontend design
- Cache support for fast load time
- Lazy loading support
- Support multiple stores and languages
- Easy to customize menu design

3. Magento 2 Shop By Brand
https://www.magezon.com/magento-2-shop-by-brand.html

Let customers shop based on their favourite brand, thus quickly finding wanted products.
- Create a page containing all brands.
- Create a page detailing each brand.
- Let customers filter products by brand in layered navigation.
- Display a block of featured brands anywhere using brand widget.
- Manage sold brand products.
- Access all brand page quickly.
- Show brand logo and related brand products on product pages.
- Configure multiple stores and languages on one page.
- Easy to import and export brand.
- SEO-optimized all-brand page and brand detail pages.

4. Magento 2 Lazy Load
https://www.magezon.com/magento-2-lazy-load.html

Increase Magento 2 page load time by 70%:
- Delay image and video loading until they enter the viewport.
- Improve SEO rankings.
- Reduce server bandwidth
- Apply to all kinds of pages: homepage, category pages, product pages, etc.
- Lazy load both image and video.
- Make loading transition smooth with preview images or placeholder images.
- Decide how soon to lazy load.

5. Magento 2 Product Labels
https://www.magezon.com/magento-2-product-labels.html

Attract customers to buy products with eye-catching labels, thus increasing sales significantly.
- Display labels anywhere containing product lists.
- Support 10 predefined variables to create labels.
- Add labels to 21 positions with preview function.
- Display labels conditionally.
- Set active time period for labels.
- Set label priority.
- Create unlimited labels.