Semrush App Center - Power your marketing by connecting your apps to Semrush data
Wicked PDF - PDF generator (from HTML) plugin for Ruby on Rails
Shopify App Store - The most powerful ecommerce app store
SEOBOTS.io - Easy to use bots for data mining and growth hacking: parsers, crawlers and much more.
Outbound Apps by Intercom - Embed apps right inside your messages
TexAu - Growth automation to scale your business faster