Depends on the type of checklist.

If it's something like a grocery list, etc I tend to use Google Keep.

If it's code specific then one of GitHub's project boards.

If it's going to require managing a team, keeping up on tasks, generating productivity reports and something akin to virtual scrum / kanban / post-it's on a daily, weekly or monthly basis BusinessDay [1]. I chose it because of recurring tasks, aging of cards and private lists.

This goes into the process behind it [2]

[1] https://blog.businessday.io/

[2] https://blog.businessday.io/2016/09/04/quick-start-for-accou...