Alternatives to Zotero

Free cross-platform office suite, fresh version

Research management tool

PDF reader and note-taking application

Open-source markdown editor

Reference manager to edit, manage and search BibTeX files

Privacy-first, open-source platform for knowledge sharing and management

Edit and manage bibliographies

Open-source project and knowledge management tool

Reference manager

Limitless clipboard

Capture and access information from anywhere

Data visualization and analysis software