- twitter.com leanpubAuthors and organizations use Leanpub to write, publish and sell amazing in-progress and completed ebooks and online courses!
- twitter.com leanpub/status/1469417919163502594Authors, companies and universities use Leanpub to easily create, publish and sell amazing in-progress and completed ebooks and online courses.
- vk.com wall720322_848Functional Design and Architecture. leanpub.com.