The document compares models of sustainability for free and open source software (FOSS) and open educational resources (OERs). It discusses that FOSS and OERs both support peer review and open standards. However, OERs are not subject to the same market pressures and evolution as FOSS due to lack of market rules in the OER space. The document then analyzes several models of sustainability for FOSS like the cooperative, protection against loss of developers, indirect sales, loss leader, and speculative models and notes which could also be applied to OERs.