wolfram library, community, and other wolfram resources are great but a little difficult to get articles in (requires use wolfram employee time, email)
over time articles in stack exchange may be lost: ie this has happened with AOL content, YAHOO content, more
"sourceforge" i believe is the largest host of software projects on the internet and is "point and click" to use
I suggest this as a more stable way to library projects:
https://sourceforge.net/
sourceforge.net Find, Create, and Publish (or sell) Open Source software for free
I'm unsure who owns/maintains sourceforge today (or financial disclosures), but Red Hat Linux started the site and allowed hosting of any (reasonably sized) project, period - even just data sets.
"github" is gaining popularity but is not Mathematica compatible, and often the sources are hacked to be compatible only for particular releases decided by very few people for (ie android) and often dont work: sometimes software is destroyed totally by being "partically ported" as a mechanism for REMOVING free software from public (while claiming it's been published and the old version is "laughably old") rather than making it more available. (obviously software that becomes tangled and unusuable is likely has a usable version hidden away for proprietary use by the people seeking to remove it or hoard control of it)
there are not very many "immense and impartial free project repositories" on the internet, but sourceforge is one Mathematica Users can certainly enjoy
