Trends in software reuse research: A tertiary study

•We identified 30 current research topics and 127 proposals for future work.•Current research topics in software reuse are mainly focused in software product lines.•Requirements engineering and testing are the most reported activities.•Application of systematic reuse to support decision-making remains the goal of many current reports.•Future research proposals include: requirements engineering, evolution and variability management, and systematic reuse adoption.•Software reuse is not yet a mature discipline, and offers many research opportunities.