When comparing Moo.do vs Notion, the Slant community recommends Notion for most people. In the question“What are the best cross-platform task apps?” Notion is ranked 10th while Moo.do is ranked 11th. The most important reason people chose Notion is:
Even the right-click menus on the web are the same as the app.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Agenda panel lets you see all your tasks
You can use tags like @next, @today, @tomorrow, and you will see all your tasks in agenda panel.
Pro Offline editor
Pro Very easy to get started with
Despite having many different features, Moo.do is extremely intuitive to use right from the start.
Pro Indefinitely nested lists of items
There is no limit to how many nested lists you can create. This gives you a lot of freedom structuring your ideas.
Pro Actively being developed
Pro Lets you view multiple panes
The multi-pane feature allows you to view lots of information on the same screen so there is no need to frequently switch between pages.
Pro Very fast to use
Very fast application which is useful when you want to brainstorm. No lags at all.
Pro Kanban
Kanban boards.
Pro Markdown
Markdown support.
Pro Multiple priority levels
You can quickly tag any of your content with one of the priority levels to help you stay organized and address the most important tasks first.
Pro Three different themes to choose from
You have three options (classic, outliner, and dark) for themes. The differences are specific to how your content is formatted (for example: how bullets are displayed, if at all). You can also toggle the "grayscale" option if you don't want your tags to be in color.
Pro Well designed interface
The design of the interface was well thought out. Despite the abundance of features, the interface is intuitive to navigate. It has a very clean, minimal design.
Pro Easily filter data using tags
You can #tag words anywhere throughout your notes in order to easily find them and keep similar notes organized.
Pro Turn your email into a todo list
Moo.do has an application for gmail that lets you fully organize your emails and turn them into a todo list. E-mails can be organized into different folders including what needs a reply, the priority levels, what is completed etc.
Pro Ability to zoom in/focus on a branch
Pro No limit on list items in the free version
Pro Full-featured on desktop, mobile and web
Even the right-click menus on the web are the same as the app.
Pro Unlike anything else
One of the most complete applications one can use to build a personal dashboard (or professional) and migrate all other services to it. No more calendar, task, notes, financials, lists, writing and wiki apps, just Notion.
Pro Pages within pages within pages, to infinity
You can have a ridiculous amount of information within a single note. Look at how it works, you'll be surprised!
Pro Flexible contents storage and organization
You can upload files and embed online stuff in any hierarchical structure using pages, toggle lists, etc.
Pro Highly visual, with icons next to every new page and so on
This feature makes it very easy to find certain notes and such. And great for visual people as well. You could also add images as icons instead, if you like.
Pro Blocks offer incredible flexibility
The basic unit of organization in Notion is the block, which can be a chunk of text, an image, a bullet point, or even a link to another page. Each page consists of these blocks, which can be easily reorganized, moved to other pages, converted into other content types, or generally manipulated in many useful ways. Because of blocks, restructuring information in Notion is way easier than in any other wiki or notebook app.
Pro Does a great job with both notes and to-dos
To-dos in Notion aren't just dot point lists. You can drag and drop them into columns just like Trello (Kanban style), you can have sub-tasks, and you can easily mark things off as completed so they are no longer in your way. Notes are also powerful, with proper formatting and ways to manage and search for them, which makes it a great Evernote alternative.
Pro Cross platform
Works with Android, iOS, Windows, & Mac OSX.
Pro Awesome for wikis
You can easily start writing a bunch of web pages, share it with co-workers and choose whether to publicize or keep your contents private. It's also easy to hyperlink pages.
Pro Amazing view flexibility
You can create different views for a page's content and easily toggle between kanban, table, etc. (As long as the content is able to allow different views.)
Pro Quick and effective search
Just type in a word and you'll have results in no time at all.
Pro Attach files in tables
You can attach files in table cells, which is a feature missing in most spreadsheet-like applications.
Pro Great spreadsheet functionality
You can use calculation/formula, links, attachment, inter-referencing of data from other pages or tables, embed documents and images in the table cells.
Pro Renders Markdown Syntax
Add code blocks, Headers, bullet point, numbered lists, or To-Do boxes by typing using Markdown Syntax (instead of klunkily moving the mouse to formatting boxes)
Pro Less headaches when editing pages
Lets you restore your page to a past edit. Also works with sub-pages and databases. Though it is worth mentioning that it's a paid feature.
Cons
Con Interface can feel distracting
Moo.do offers a variety of features that can make for a distracted experience. Rather than being encouraged to focus on the task at hand, you may find yourself tempted to flip through other panes.
Con Undo / redo
Undo / redo can be buggy.
Con No API
Con No wiki-style cross references
Con Inability to add images to the outline
This is now possible
Con Currently lacks notifications for changes in panes
Con Not very fast using native apps
Can take time if you're switching between lots of pages often as it needs to load the data each time
Con Not always very intuitive
Column filters are not that intuitive to apply.

Con No true backup
True backup can only exist if it's automated and easily recoverable. Else, it's just an outdated copy or useless scrambled data.
Con Designed with teams in mind, and less formatting than Evernote
Evernote may be more individual-oriented and has more formatting and such options available, but whether that affects you is down to personal preference. Try both and see which you prefer.

Con Not yet a new protocol, as it could be! (or could it?)
Think of scuttlebutt or email. the best Evernote alternative would be a "web 3.0" of sorts. Something that would be just a simple file added to a computer and automatically replicated to other computers along with a website and any company could easily pick up the concept and make their own hosting, including some awesome google drive/host of sorts.
