Objective: Evaluate the suitability, readability, quality, and usefulness of publicly available online resources for cancer caregivers. Methods: Resources identified through a Google search and environmental scan were evaluated using the Suitability Assessment of Materials (SAM), an online readability text analysis tool, the DISCERN (quality), and caregivers' unmet needs checklist (usefulness). Descriptive analyses and cluster analysis to identify the group of resources with the highest SAM and DISCERN scores were performed.