Trello	Monday.com	ClickUp	MeisterTask
Free and Payed Version	Payed	Free and Payed Version	Free and Payed version
Trello Site Board	Monday.com Board	ClickUp Board	MeisterTask Board
Trello	Monday.com	ClickUp	MeisterTask
Trello Pricing	Monday.com Pricing	Clickup Pricing	MeisterTask Pricing

Trello possibilities overview for the free plan

1. 10MB per File Attachment
2. Unlimited Lists
3. Unlimited Cards
4. 10 Boards per Team

Monday.com possibilities overview for the Lowest payed plan

Basic plan includes:

1. Unlimited boards
2. 200+ templates
3. Over 20 column types
4. Unlimited free viewers
5. iOS and Android apps
6. Create a dashboard based on 1 board

ClickUp possibilities overview for the free plan

1. 100MB Storage
2. Unlimited Tasks
3. Unlimited Members
4. Two-Factor Authentication

MeisterTask possibilities overview for the free plan

Basic plan includes:

1. Up to 3 projects
2. Unlimited project members
3. Customizable project boards
4. Limited integration possibilities
5. File attachments up to 20 MB per file
6. Mobile apps
7. Email support

Link with Different WhiteBoards incase my teammates are not satisfied with my offer

Apps for WhiteBoards