When comparing Gitit vs Joplin, the Slant community recommends Joplin for most people. In the question“What is the best cross-platform note-taking app?” Joplin is ranked 2nd while Gitit is ranked 36th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Lots of export formats
Giti has a multitude of formats that it allows to be exported, including LaTeX, ConTeXt, DocBook, RTF, OpenOffice ODT, and MediaWiki markup.
Pro Supports markdown
Getit supports markdown, a plain text formatting syntax that is designed so that it can be read by HTML.
Pro Free and open source software (FOSS)
Licensed under GPLv2 so you can download source code and customize to meet your needs, provided that you know or are willing to learn Haskell.

Pro Can be used collaboratively by multiple people

Pro Renders math
Using MathJax.
Pro Offline access
Pro Open source
Peace of mind that there is no malicious piece of software in the app.
Pro Encryption
Pro Cross-platform
Supports Windows, Mac, Linux, Android and iOS.
Pro Supports file attachments
Pro Supports markdown
Pro Supports tags for notes
Pro Web Clipper
Browser extension saves full pages, clean content, or screen selections to new notes.
Pro Optional CLI interface
Provides a CLI interface for terminal lovers.

Pro Supports multiple languages
English, French, and Spanish, Italian, German, Czech and many others.
Pro Active user forum with support from app creators
Support, troubleshooting, and new feature requests are easy to make at the user forum and you can contact the app creator directly.
Pro Dropbox support
Can sync using Dropbox.
Pro Nextcloud support
Pro Timed alarm reminder for to-do lists
Cons
Con Requires Haskell
On some Linux platforms a binary package for Haskell may not be included in the standard repositories. So, it will be necessary to compile Haskell from source code or find a non-standard package repository, which may seem like a hassle if you don't use Haskell for anything else.
Con Sync issues with Android
If update on Linux then sync on Android, sometimes the Android sync will duplicate or remove some journal notes. Seems to be a bug in the Android app. The Linux app alone without sync with Android seems to work well using Dropbox. But don't expect changes you make on Android to sync properly back to Linux.
Con Sync issue under Linux
The Linux client has a bug that requires the user to click the mouse frequently in order for sync to proceed. This bug has been open for a while.
Con Gargantuan memory footprint
1GB+ of memory for taking notes.
Con Old school interface
Con Bloated
This project is suffering from feature creep and uses a lot of memory for a note-taking app.
Con App Image launches very slowly
On Linux, you can only install via App Image, which take 5+ seconds to launch. I can launch LibreOffice in under two seconds.
Con Sync issues on Windows
No way to change account settings and sync easily corrupted.
Con Weak tag searching
Joplin can currently only search for a single tag at a time. None of the boolean operators (AND, OR, NOT) are available for use in searches. This greatly diminishes the usefulness of tags in Joplin.
Con Can't create tags from the mobile app
