I'm not inherently against it, we have a problem with opensource being asymmetrically underfunded and if people going commercial is the cost perhaps we've failed.
Moq is largely unnecessary today with LLMs being able to easily generate mock classes. I personally prefer to hand-roll my mocks, but if you prefer the Moq-like approach, there's NSubstitute (3-BSD).
Automapper and MediatR are both libraries I avoided prior to the license change anyways, because I don't like runtime "magic" and not being able to trace dependency calls through my code. But, there is Mapster and Wolverine to fill those needs (both MIT). Wolverine can also replace much of MassTransit.
Telerik stuff - there are many good FOSS alternatives to these UI components; too many to list since it depends on which stack you're using.
PDF is indeed a sore spot. PdfPig is good, but limited in capability. I've started offloading PDF processing to a separate Python container with a simple, stateless Flask API with PyMuPdf.
> we have a problem with opensource being asymmetrically underfunded and if people going commercial is the cost perhaps we've failed.
Completely agree with this, though. My company and myself personally contribute a lot of time back to OSS, and I feel like that is part of the social contract of OSS. To have these libraries rug-pulled feels like a slap in the face as a OSS contributor and maintainer.
Another popular library that went commercial is FluentAssertions, Shouldly is a good open-source alternative.
BUT. PDF has always been a nightmare. It's made a lot better in the last year since LLMs have vast knowledge of all the functions available in each of the .Net PDF OSS libraries and can usually find a way to do the thing I need now. (I've even had them just hack the PDF streams to do something when there is no library to do it as they know the whole spec)
“team decides” and I was busy with other stuff when they were doing evaluation.
But I would gladly pay the license there is just so much just working out of the box with mass transit you don’t realize until you miss it.
We use it with RabbitMQ.
Having worked on some basic parsing of metadata from PDF spec, I would rather pay than have to code something myself. PDF is such a PIA.
libqpdf also intentionally limits its scope to PDF structure, so doesn't address nontrivial content creation or manipulation (page content handling is pretty much limited to compressing/decompressing and parsing/unparsing the content stream).
I just have PDF micro service where I use puppeteer. But I could swap it to Java micro service easily.
However, aren't Moq, Avalonia and MassTransit free software?
As for Automapper and MediatR, their owner changed from a free software license to only an open source one (Reciprocal Public License), but these are probably the simplest libraries of the ones you mentioned and have either been forked (MagicMapper) or have alternatives.
Moq has the appearance of free software but bundled some spyware stuff (seemingly "benign" "Sponsorlink" for getting donations).
Masstransit went commercial recently, https://masstransit.io/introduction/v9-announcement
Avalonia itself is opensource, but i'd put in in a fremium/shareware category since if you need to add an WebView or Media player you need to buy their commercial Accelarate additions.
