I had exactly this in mind last summer and actually built something! http://curate.im - check it out. I had planned to add voting and collaboration functionality, but nobody ended up using the site so I gave up on it and it's just been sitting there for almost a year. It's not tailored specifically to systems organisation though. Enter the beta code HN001 if you want to sign up lol
I've always wanted something like this to. Only, I suspect that lists are only one possible form of information that needs to be organized. I also think users should be able to shape trees (and maybe others).
Maybe you encourage vistors to click on everything they agree with and thereby learn which users contributions are seen to be the most valuable. Users with the most valuable contributions could be rewarded with more ability to shape the tree or list...
List would supported nested lists i.e it would be a tree
In terms of rewards or monetization, it would be possible to gamify contributions ala stackexchange and rely on affiliate links for commercials tools and perhaps even share the revenues with the top contributors or offer them options on what to do with the money
There are plenty of "List of frontend development tools" or "list of git tools".
I want a site where users can build lists, share them, vote on them, categorize the content and update it with the new tools.
alternativeto.net is a partial attempt at doing that but it doesn't take a systems thinking approach