What are some alternatives?
When comparing Vikunja and Notezilla, you can also consider the following products
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
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.
Wekan - The open-source Trello-like kanban (built with Meteor)
OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.
Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
Standard Notes - A safe place for your notes, thoughts, and life's work