- Zotero (https://www.zotero.org/)
- Mendeley (https://mendeley.com)
- Inciteful (https://inciteful.xyz/)
- Elicit (https://elicit.org)
- Research Rabbit (https://researchrabbitapp.com/)
- Snowball (https://github.com/shaunabanana/snowball) - Guidelines for Snowballing in Systematic Literature Studies and a Replication in Software Engineering (https://www.wohlin.eu/ease14.pdf)