SerendipiTAG is a tag-based recommendation web environment designed to support users when searching for information.
Based on the tags created by the users of a series of social sites and social networks, or basically tags in general, the system offers alternative search paths which increase the likelihood of a successful search and at the same time support processes of serendipity: the probability of finding results that correspond to the search in question, albeit in unexpected directions.
The system is not independent: it is a layer that can be added to tag-based environments, whether commercial, like Flickr, or corporate.