What are some alternatives?
When comparing Wekan and OneNote, you can also consider the following products
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Simplenote - The simplest way to keep notes. Light, clean, and free. Simplenote is now available for iOS, Android, Mac, and the web.