Thirdside.org "is sponsored by the Global Negotiation Project (formerly the Project on Preventing War) at Harvard University. The Project develops and encourages the use of effective negotiation processes to reduce the risk of war. In addition, the Project is also committed to the development of negotiation theory and practice in a wide range of related areas, such as international mediation and designing dispute resolution systems to contain violence and resolve conflict." 
- William Ury "is the co-founder of the Program on Negotiation at Harvard Law School, where he directs the Global Negotiation Project.
- Joshua N. Weiss "is currently the Associate Director of the Global Negotiation Project at Harvard University."