When comparing TagSpaces vs SynapBook, the Slant community recommends SynapBook for most people. In the question“What is the best cross-platform note-taking app?” SynapBook is ranked 12th while TagSpaces is ranked 46th. The most important reason people chose SynapBook is:
Using the tree structure, you can structure the content.
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Pros
Pro Open source
TagSpaces is free and open source making it easily extendable with the help of extensions.
Pro Your can choose your cloud file storage
Using only files and no databases let's you make the decision with which cloud file sync service to use, making sure your notes are made available on other devices and platforms. It works great with Owncloud, Nextcloud, Dropbox or Google Drive.
Pro No web service or database lock in
The backend is simply the directory and file structure on your harddrive.
Pro No cloud
TagSpaces is running completely offline, sending no data to any cloud based service, unlike many Evernote alternatives.
Pro Memo can be structured in tree form
Using the tree structure, you can structure the content.
Pro Nice sticky memo UI
It can support pop-up notes which can be used like simple Windows Sticky memo app.
Pro Both search-based Memo and organizing tree Note
Search-based notes and tree-oriented tree notes are supported separately, so can be used conveniently depending on the purpose.
Pro Offline mode support
Basically, it is based on server synchronization, but it can be used offline.
Pro Folding
Groups can be folded.
Pro Various text styles and decorations
General styles (bold, font size), highlighter and separator line, and more.
Pro Frequent updates
Bug fixes and additional new features rolled out frequently.
Pro Free
Cons
Con It renames your files in order to tag them
The positive side of this drawback is that this way the tags are easily transferred to other platforms by simply syncing them.
Con Setup could be more user-friendly
Con Does not support iOS
This app only supports Android and desktop OS, but not iOS.