So far, mesh networks have proven themselves quite effective and quickly adopted during times of disaster or political unrest, as they don’t rely on existing cable and wireless networks. In Iraq, tens of thousands of people have downloaded FireChat as the government limits connectivity in an effort to curb ISIS communications.
Protesters in Taiwan this spring turned to FireChat when cell signals were too weak and at times nonexistent. And FireChat’s popularity is surging in Hong Kong. About 100,000 users downloaded the free FireChat app between Sunday morning and Monday morning, according to The Wall Street Journal. While there are no reports of cell-network outages so far, student leaders are recommending FireChat for fear authorities may shut off communications.
Note: Firechat / Open Garden are not Free Software, but a near perfect example for decentralized communication.