Tidily.io is described as 'Daily kanban & calendar for your day to day tasks,' and is an website in the Office & Productivity category. There are more than 100 alternatives to Tidily.io, not only websites but also apps for a variety of platforms, including Android, Windows, iPhone and Mac. The best alternative is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or Google Keep. Other great sites and apps similar to Tidily.io are Microsoft OneNote (Freemium), Evernote (Freemium), Simplenote (Free, Open Source) and CherryTree (Free, Open Source).
To Round is an easy-to-use task manager for iOS and Android with clear interface, designed for visual thinkers. It is a simple yet powerful app, which turns a routine activity of getting tasks listed and scheduled into a delightful experience.
Memrify is a free multiplatform secure place for your all of your personal and collective memories. It is built on a strong filtering system, so your memories are retrieved in no time. Give it a try, you can log in easily with facebook or create a new account in 15 seconds.
USticker is free of charge version of "MakerX" app. USticker is notebook app for your iPhone or iPad with set of tools for organizing. The app lets you make quick notes with sketch/photo-sketch and categorize ones with special very efficient markers for organizing.