Launches
Coming soon
Upcoming launches to watch
Launch archive
Most-loved launches by the community
Launch Guide
Checklists and pro tips for launching
Products
News
Newsletter
The best of Product Hunt, every day
Stories
Tech news, interviews, and tips from makers
Changelog
New Product Hunt features and releases
Forums
Forums
Ask questions, find support, and connect
Streaks
The most active community members
Events
Meet others online and in-person
Advertise
Subscribe
Sign in
Open Book Challenge
Get $100K to build a better Facebook.
•
2 reviews
•
0 followers
Visit website
Follow
Overview
Launches
Forums
Reviews
Team
More
Blog
•
Newsletter
•
Questions
•
Forums
•
Product Categories
•
Apps
•
About
•
FAQ
•
Terms
•
Privacy and Cookies
•
X.com
•
Facebook
•
Instagram
•
LinkedIn
•
YouTube
•
Advertise
© 2025 Product Hunt
Do you use Open Book Challenge?
I use this
I use something else
Recent Open Book Challenge Launches
Open Book Challenge
Get $100K to build a better Facebook.
Launched on March 21st, 2018
7
25
Review Open Book Challenge?
5/5 based on 2 reviews
Leave a review
Reviews
presh
•
5 reviews
Helpful
Share
Report
7yr ago
Bret Kinsella
•
6 reviews
Think big. Start small.
Helpful
Share
Report
7yr ago
