Sits

Integriti

https://www.intigriti.com/

Bugcrowd
https://www.bugcrowd.com/

Hackerone
https://www.hackerone.com/

Synack
https://www.synack.com/

Japan Bug bounty Program
https://bugbounty.jp/

Cobalt
https://cobalt.io/

Zerocopter
https://zerocopter.com/

Hackenproof
https://hackenproof.com/

BountyFactory
https://bountyfactory.io

Bug Bounty Programs List
https://www.bugcrowd.com/bug-bounty-list/

AntiHack
https://www.antihack.me/