dictionary , grammar checker

[vbatcnam]

Hello,
Can you tell me if it is possible to:

• add a custom dictionary for invented words,
• integrate a grammar checker like "Grammalecte" (in french),
• add a plugin (or other) that analyzes sentences that are too long, repetitions and language tics?
  If so, can you tell me how to do it?
  And if not, what open source software do you use to do that?
  I think It would be nice to be able to do all this with NovelWriter to avoid copying and pasting and duplicate text with different versions.

I also take this opportunity to say that including images (at least in places, objects and characters sections) would be very useful.
Currently I use Joplin or zettlr for my files but I sometimes have duplicates with the novelWriter files because I don't always think to synchronize them....
As for grammar correction, I use Zettlr, but the same: I have duplicates sometimes with different versions and switching from one to the other is quite tedious.
If you have a better method to tell me:)
(Forgive my English)

[vkbo]

• add a custom dictionary for invented words,

Yes, there is a project word dictionary for this. You can find it in the Tools menu, and add words to it either directly or by right-clicking on an underlined word and select "Add to Dictionary".

• integrate a grammar checker like "Grammalecte" (in french),
• add a plugin (or other) that analyzes sentences that are too long, repetitions and language tics?

There are currently no text analysis tools in novelWriter. It's a pure writing app. Such features have been discussed and may be added at some point.

And if not, what open source software do you use to do that?

I don't use such tools myself.

I also take this opportunity to say that including images (at least in places, objects and characters sections) would be very useful. Currently I use Joplin or zettlr for my files but I sometimes have duplicates with the novelWriter files because I don't always think to synchronize them...

I get that people would like to also use novelWriter for research notes, but the plain text format is not well suited for rich notes. The note feature is meant for writing quick character profiles and such, much closer to the actual text. I keep my own research notes in Obsidian, and usually have it open next to novelWriter when writing.

There are still use cases for adding other content than text, and it's been discussed from time to time to allow adding attachments to notes, like images (like world maps and such). From next version it will be possible to add weblinks at least.

[vbatcnam]

Great! Tanks.