Many tools for web developers, system admins & webworkers (a constantly growing online toolbox for: Network configuration, Image conversion, String manipulation, etc); suggest your own!
manytools.org appears in the published seller files of 1 advertising network. Each row below is that network's own declaration that it is authorised to sell this site's inventory, with the date the relationship first appeared in the record.
Same niche, closest authority score — the competitive set a network would compare manytools.org against.