During the Covid-19 crisis, the nonprofit world has been strongly impacted, with a near-total shutdown of some nonprofits activities. Faced with the risk of losing their revenues and the disengagement of their members and volunteers, nonproft organizations have resorted to digital tools such as social networks to maintain their charitable activities. The objective of this research is to systematically review the work done in this area and to trace the evolution of the growing interest in this topic over the last few years. More concretely, the aim is to collect, analyze and synthesize published research on the adoption and use of social networks by nonprofits in times of several pandemic, economic and political crises. This search referred us to 816 published studies in credible databases, 14 of which are eligible covering the period 2010-2022. By providing a broad review of these practices and their contribution, this research can present a roadmap for future research as well as be useful for nonprofits leaders and members to understand the utility and contribution of social networks in enhancing the reach of their actions.