Domains at Godaddy, namecheap

Webhosting at Hostinger, siteground, godaddy, 

Drag + Drop Website Sites via Squarespace, wix, wordpress-elementor 

eCommerce websites Shopify

Banners and Social media posts at Canva

Brainstorm your Colour Palette on Adobe Color

For pros you can use the Adobe Creative Suite

Design elements at freepik, envato elements 

Schedule marketing content at Planoly 

Newsletters on mailchimp and Klaviyo

Free Photos at Unsplash 

Inspiration on Pinterest  and Behance