Multicolr Search Lab : We extracted the colors from 20 million Creative Commons images on Flickr to make the images searchable by color.
Carbon : Create and share beautiful images of your source code.
Start typing, or drop a file into the text area to get started.
Commento : A lightweight, open source, tracking-free comment engine alternative to Disqus.
TrackingTheTrackers.com : A free analysis tool to check if a website is disguising third-party trackers as first-party trackers.
patchbay : patchbay.pub is a free web service you can use to implement things like static site hosting, file sharing, cross-platform notifications, webhooks hand...
Looks good to me (LGTM) is the most popular comment on Github, perhaps. But LGTM is boring. So we spice it up with some images.