Description: Blather is an open-source microblogging software that allows users to post short updates similar to Twitter. It is developed in Ruby and designed to be simple, flexible and easy to setup.
Type: software
Pricing: Open Source
Description: Wikidata is a free and open knowledge base that can be read and edited by both humans and machines. It acts as central storage for the structured data of its Wikimedia sister projects including Wikipedia, Wikivoyage, Wiktionary, Wikisource, and others.
Type: software
Pricing: Free