Somewhat along the lines of Typora is Abricotine, which also has just the one pane which serves as both the live previewer and the editor. You do not "switch modes" or have side-by-side panes. It does visually expose more raw Markdown than Typora. Most notably, the basic formatting characters (* for italics and bold, ~ for strike-through, and # for headings) ...
I highly recommend flameshot: https://github.com/lupoDharkael/flameshot
However, in case that doesn't work for you, there's a few alternatives:
Have a look at OCRvision. OCRvision is a searchable PDF software. It can convert any scanned documents in a folder to searchable PDF automatically. It supports multilingual OCR.It can be configured for both scanned PDF and image files then convert to searchable pdf
Disclaimer :- I am associated with OCRvision as a developer
Snap packages can be used on all major Linux distributions, including Ubuntu, Linux Mint, Debian and Fedora. To install the Notepad++ snap package open the terminal and type:
sudo snap install notepad-plus-plus
To add Notepad++ navigation to other drives besides the default drive:
sudo snap connect notepad-plus-plus:removable-media
I've found two solutions that look promising:
(1) A hardware-based solution: Dual-booting to two operating systems using a 2 in 1 Dual Micro SD Switcher.
(2) A software-based solution called BerryBoot, to make booting to two or more operating systems easy. (Pi 4 version recently added.)
This way Scratch and other software can be used in Raspbian, and ...
I would highly recommend Draw.io, it's a web-based application and you can sync to Dropbox, OneDrive, or export projects and save them anywhere.
It has templates to get you started or to use as examples and is great for mind-mapping, flowcharts, UML diagrams, etc.
You can export them as HTML, PDF, XML, PNG, JPG, and a few more formats.
What about software-as-a-service offers? With https://www.circuitlab.com/ you can run simulations in your Browser. It is commercial software, subscription-based.
I don't know how well this can scale up. Maybe the web can handle only simple circuits.