xournalpp VS pyHanko

I highly recommend Rnote to anyone on Linux that misses the "hodgepodge" notetaking of apps like OneNote. It works like a dream on touchscreens and drawing tablets, with a surprising amount of configuration under the hood.

Also worth noting is Xournal, an older but similar project: https://xournalpp.github.io/

I've been using Xournalpp[1] for many years, highlighting books as I read them, adding in text/hand drawn annotations in whitespaces if necessary. Unlike other PDF readers/annotators, it saves a separate file, so the original PDF is untouched. It can also export the annotated PDF as a new PDF with highlights and annotations.

Obsidian[2] also has PDF support, where you can open a markdown document side by side with the PDF to take notes as you read. I think it also lets you highlight the PDF itself.

Emacs I think has a similar feature, via plugins/org-mode(?) to the Obsidian setup.

And of course your typical PDF reader probably has support for highlighting PDFs too, but I find them clunky and they save by exporting a PDF, which can be a bit heavy-handed IMO compared to just saving the annotations/highlights as a separate file as Xournalpp does.

[1]: https://github.com/xournalpp/xournalpp/

Currently, I am trying to build a small open source NLP project for which I first find text on a page and then translate it; see the current project state here: https://github.com/PellelNitram/xournalpp_htr. The purpose of this project is to make handwritten text in Xournal++ searchable for all users.

[Xournal++](https://xournalpp.github.io/) is in my option the best handwritten note-taking software out there, because it has all the coolest features (like LaTeX snippets and shapes) and it's open source too, so make sure to check it out!

If you mean signing as in "adding a digital, cryptographic signature", you could use pyhanko () which provides everything state-of-the-art to do just that.

Document read from codimd-api https://github.com/hackmdio/hackmd-cli/blob/master/README.md - Matching config.yaml + styles read from git - Fetching data from CRM https://docs.espocrm.com/development/api/#client-implementations - Parsing markdown as jinja template - Generate pdf from markdown https://github.com/jmaupetit/md2pdf - Add signature fields https://github.com/MatthiasValvekens/pyHanko - store pdf file (maybe seafile?) (or nextcloud)

I don't think Okular supports PKCS#11 out of the box, but if you're OK with CLI tooling, this might suit your needs: https://github.com/MatthiasValvekens/pyHanko (full disclosure: I wrote that tool, so assume I'm biased).

Shameless plug: I'm the author of this tool: https://github.com/MatthiasValvekens/pyHanko/.

Certomancer started out as a weekend-long hacking session because I wanted to put the test suite for pyHanko on more solid foundations. I more or less knew where I wanted to go: I started by crafting a configuration file describing a somewhat involved testing configuration, and then implemented features incrementally until the tool was capable of handling the sample config I initially put together. This is the result.

If you aren't afraid of some command-line tooling, you can use pyHanko: https://github.com/MatthiasValvekens/pyHanko/. It's mainly a signing tool, but the library behind it supports literally every encryption scheme in the PDF standard. The CLI is a bit more restricted, but it'll probably still do the job in this particular case.