I agree that worry shouldn’t be expended on checking on extent of use of free software. If someone says their photos are (mainly?) created/processed with free software, I think that should be good enough for a simple list of galleries curated in good faith.
Perhaps someone could start a wiki post here at the forum containing a list to see how it goes before it’s considered for the main site.
I think this is a great idea!
The issue of where to draw the line is a sticky one, however. In some ways, F/OSS software on a non-free OS is a big issue, but in other ways it doesn’t matter. The problem is that we can always go down this slippery slope. What about the firmware on my camera? It’s not FOSS (there is no FOSS firmware for Olympus cameras). What about pictures I took on my Android phone? I didn’t root it and flash pure AOSP onto it, so it’s not purely FOSS. I have been using a paid manual camera app called “ProShot” so I can capture RAW images on that phone (now, the great Open Camera provides a FOSS option for that). I sometimes use Snapseed (gratis, but not FOSS) to edit on Android, as there are no full-fledged FOSS Android photo editors. Even when I port images to my Linux (Xubuntu) computers, and use FOSS software to edit them (Darktable/GIMP/G’MIC/RawTherapee, etc.), I then upload them to Flickr (free, not open) to host them for my github sites, Jekyll powered gallery (FOSS). And even if I did host directly on Github, my ISP is certainly using non-free software to manage and direct the webtraffic to my computer when I view them.
In short, let’s just take peoples word that they used a mostly libre workflow, and that they want to show off what they were able to do within that (totally awesome) workflow. We want to inspire people to join our community, not turn them away with arbitrary definitions and thresholds.
I totally agree with you.
The embedded software is a slightly different story anyway. Software is linked to the camera, and changing a camera entails the corresponding software change. And as a DSLR owner what keeps me with Canon is not the software license but the price of all my lenses 
(*)
Using libre software on non-libre platforms should be encouraged, since this helps people make the jump to libre platforms later. People are not particularly enamored with Windows, they are tied to it by Office and, in our case, Photoshop/Lightroom.
(*) and of course the vast superiority of the red straps over the yellow ones
It has always been my intention at some point to find a way to highlights the photographers in the community in some way. Either through a page of some sort, like a showcase of works, or at the very least through links.
I personally love the idea.
So, perhaps we can come up with a nice format for creating a list of user portfolios/websites? What type of information would be relevant to include, does everyone think? Off the top of my head maybe something like…
Personally I think it’d be neat to have a page available for each member that wanted one where they could link works + relevant contact information. Ideally this would be helpful for a push later on to help raise awareness within the F/OSS community that there are not only photographers who use Free Software, but that may also license liberally, and even better are available to hire for work (or to license/purchase their works for various uses).
For me the whole discussion goes into the wrong direction. IMO a pure link page should only be bound to being part of the pixls.us. community, not on the software used or something else (of course pages could still be excluded for legal or moral reason). Another, additional approach would be a regular series of posts (e.g. monthly) introducing photographers from the community and their pictures, including a brief workflow description etc. This should be limited to FOSS only, at least for the pictures/topics of the post.
Up front we need to make it clear that your images and links will likely be committed to a git repo, and if you want your stuff removed from the site, that is fine, but we will not rewrite the git history in order to erase people from the site.
IMHO this stuff must be optional. Privacy is a big deal.
I don’t know, if you don’t want to give a name/handle, email, and a social media, then maybe the page isn’t exactly what you want. I don’t mean to sound exclusionary, but I don’t think we should post a bunch of photos to showcase free software without some attribution.
Wow, this sure has moved on from the simple ‘page of links’ proposal I originally floated!
I think we should go back the original idea.
Two prerequisites…
It could still be categorised into genres, like 'scapes, portraits, architecture, etc…
That way the page is easily administered by the mods, and things like privacy can remain in the hands of the photographers.
“KISS - Keep it simple, S… (I’ll let you work out the rest)”
Why not extending these pages, not only to photographers, but to illustrators and/or developers or FLOSS tools ?
The line between photographers and illustrators is sometimes fuzzy, and developers deserves to appear in such pages too 
Well, we already have the software page for that, so I would not duplicate the contents…
As for illustrators, maybe we could include a “photo manipulations” category in this future “FL/OSS showcase galleries” page?
On the other hand, I think that drawings would be a bit out of scope here…
But the pages we are talking about here are not about the software but about people, right ?
I’d see them as a kind of directory of people contributing in a way or another to FLOSS photography, either by producing nice pictures, or nice software.
If illustrators use FOSS, they have their own website, are members of this site and are happy to promote FOSS on their site, then I have no issue with adding them as a category on a links page.
As for developers, I feel you are already well represented here. Sorry, that’s not meant to offend, you all do an awesome job and we’d be really lost without you. But this way both the photographer (who uses your software) and software itself get better exposure.
I was thinking the new pages could be set up as a kind of ‘tribute’ to people contributing to FLOSS photography and graphics everyday, one way or another. Of course there are already software pages, but they don’t talk about the people who are working behind. For a photographer, that would be a bit like showing a picture gallery without giving information on whom shot them.
Personally, I’d be more interested by the profiles of the different people themselves (background, tools they use, description of their workflow, etc…) than having a gallery of one hundred pictures they shot without any further explanations. And in that case, I think including other people than photographer could be great too.
I’m willing to help shape these pages into something easily doable. I’m comfortable enough (I think) with the website code to hack on this a bit sometime in the near future.
A sample markdown page for a photographer could look like this:
---
name: Alvin Guy
website: aguy.com
twitter: @aguy
flickr: anotherguy
social media_n: aguy
lede-img: ./landscape.jpg
lede-attribution: "Fancy Image Title"
type: "biography"
collection: directory
layout: photographer.hbt
---
<figure>
<img src='IMAGE.png' alt='Alt-text'>
<figcaption>
This is a caption for my image!
</figcaption>
</figure>
A long bio here.
You can see the site wiki page on authoring: website/WRITING.md at master · pixlsus/website · GitHub
You can also fork the repo and add your changes.
Once I see what you have, I can put together a page template.
So a kind of directory of people who use and contribute to free software? I like that idea.
If these gallery pages are restricted to display the works of pixls.us members, why would thry need to carry more information than the user’s handle (or a link to his/her profile)?
The user profile on pixls.us is somehow limited. I’d love to see more information for a lot of users here, like interviews, or video presentations maybe .
For instance, Krita has a really nice “artist interview page” on their website. That’s the kind of things I’d love to see here on pixls.us for instance.
When will we be able to read interviews of @Ofnuts, @houz, @Fotonut, @Carmelo_DrRaw on this site ? 
Being late to the party I would like to add two remarks:
)Of course those are just my opinion and discussion points.