doo - A smart, simple app for reminders and to-dos
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Reminder - A better way to keep track of your reminders 📝
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.
Badgerton - The proactive reminder app for people with ADHD.
JabRef - Graphical Java application for managing bibtex (. bib) databases.JabRef · JabRef Help · JabRef | Blog · OpenOffice/LibreOffice .