Leanote is described as 'provides services for note and blog. You can use "note" as your personal notebook, if you want to share with friends, just publish note or notebook to the blog' and is a popular Note-taking Tool in the Office & Productivity category. There are more than 100 alternatives to Leanote for a variety of platforms, including Windows, Mac, Online / Web-based, Android and iPhone. The best alternative is Joplin. It's not free, so if you're looking for a free alternative, you could try Standard Notes or Notion. Other great apps like Leanote are Microsoft OneNote (Freemium), Google Keep (Free), Evernote (Freemium) and Simplenote (Free, 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.
With so many tools, it's hard to keep everyone on the same page. Notion is a new tool that unifies them all. It's like Google Docs, but everything is organized and discoverable by your team. Real collaboration in real-time.