Description: Personal Knowbase is a free, open-source knowledge management and note taking app for Windows, Mac, and Linux. It allows users to organize notes, ideas, documents and more in a flexible hierarchical system.
Type: software
Pricing: Open Source
Description: Zotero is a free, open-source reference management software that helps you collect, organize, cite, and share research sources. It works as a standalone program or browser extension that seamlessly integrates with Word, LibreOffice, and Google Docs.
Type: software
Pricing: Free