Some no-name came and without any problems asked to become a maintainer in a project used in almost any distro, took it over, put a backdoor in there and no one had any questions? In this case, everything turned out thanks to pure chance. Noname screwed up his backdoor, which attracted the attention of a guy from Microsoft, and out of boredom, he dug up what was what. And if I hadn’t messed up, or that guy from Microsoft decided to go drink beer instead of poking around in the xz code, then no one would have discovered anything. It’s scary to imagine how many of these nonames are sitting in all these thousands of open source projects, waiting in the wings to roll out a malicious patch.

SumatraPDF or zathura + zathura-pdf-mupdf

I’m currently using Calibre/Calibre-Web and Audiobookshelf for podcasts and audiobooks.

Lenovo G505S 16gb RAM - no (the A10-5750M processor has neither Intel ME nor AMD PSP), software probes - too, if instead of the closed UEFI from the manufacturer you install the open source BIOS coreboot+SeaBIOS: it will contain only a few small closed binaries , they were all dismantled and no backdoors were found. Someone made a script in which by rolling back 1% of the last commits (made after deleting the G505S) you can return AMD boards to coreboot - https://review.coreboot.org/c/coreboot/+/76832. You can install the AR9462 module, whose ath9k family WiFi is 100% open source.

Anytype - An open-source Notion alternative.

org-mode/org-roam in Emacs, on Orgzly mobile, synchronization via git.

Anytype - An open-source Notion alternative. E2EE, cloud and local network sync, can be self-hosted.

NeonModem - console client for Lemmy

lem.el is an Emacs client library and interface for Lemmy.

I just use Kindle for my calibre/calibre-web stack, all within the KOReader app)

I have used Gogs and Gitea in the past, now Forgejo is a fork of Gitea with Woodpecker-CI

You can install Vaultwarden instead of Bitwarden. Differences between Vaultwarden and Bitwarden by reference.