Was looking for an alternative for OneNote, so I found it here. I like how simple the interface is and the UI is very simple. It's good for what it is, but there is no sorting/topic system which makes it difficult to find specific notes for specific topics. Other than that, it's a good note system.
Based on our record, Simplenote seems to be more popular. It has been mentiond 21 times since March 2021. We are tracking product recommendations and mentions on Reddit, HackerNews and some other platforms. They can help you identify which product is more popular and what people think of it.
I use Simplenote. It syncs between my Android tablet and my desktop PC. - Source: Reddit / 5 days ago
I highly recommend Simplenote for you. It has a markdown support, sync between multiple devices like Android/iOS environments.  - https://simplenote.com/. - Source: Hacker News / 27 days ago
Or you can use Notes on Mac, Trello cards. Or my fav Simplenote - free and syncs between devices. - Source: Reddit / about 1 month ago
Maybe as an upgrade from Simplenote, another app they own. - Source: Reddit / about 1 month ago
The app would need to send data to server (store & sync notes) SimpleNote uses Simperium for that, was hoping that would work with Flutter ? - Source: Reddit / 2 months ago
Quip - Quip is the modern productivity suite that simplifies your life and helps your team get work done faster.
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.
Slack - A messaging app for teams who see through the Earth!
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.
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.
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.