memosaic is described as 'new and unique memo taking app that lets you easily capture your ideas, and organize them into clear neat notes' and is a Note-taking App in the Office & Productivity category. There are more than 25 alternatives to memosaic for a variety of platforms, including Windows, Mac, Android, iPhone and Online / Web-based. 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 apps like memosaic are Evernote (Freemium), Simplenote (Free, Open Source), CherryTree (Free, Open Source) and Cryptee (Freemium, Open Source).
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, can be copied, tagged and modified either from the applications directly or from your own text editor.
Notezilla is the leading sticky notes app for Windows, Android, iPhone/iPad and the web. Set reminders to sticky notes, Pin sticky notes, attach them to websites, docs & folders, sync between PCs and other devices, organize using folders and tags.