QuietKit - Guided meditation for beginners (for free)
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Momentum - Agile goal and performance management
Qiqqa - Qiqqa is a free research and reference management software. It can be used in many organizational projects from the academic to the personal to the business endeavor. Read more about Qiqqa.
The Best Life Planner 2019 - Build a goals and habits plan that actually works
JabRef - Graphical Java application for managing bibtex (. bib) databases.JabRef · JabRef Help · JabRef | Blog · OpenOffice/LibreOffice .