Option A
Authentication and user management for modern apps.
Clerk gives you prebuilt sign-in, sign-up, and user management UI with multi-factor auth, social, and enterprise SSO out of the box.
- Founder
- Colin Sidoti
- Founded
- 2019
- Team
- 51-200
- Listing
- Free (nofollow)
- Listed
- May 2026
Option B
Buy and sell tiny startups for free with 0% commission
BuySellStartups is the simplest way to buy or sell an internet business. Free to list, 0% commission — thousands of founders have already transacted here. Whether you're looking to exit or acquire, this is where deals get done.
- Listing
- Pro (do-follow)
- Listed
- May 2026
