Trainman - Find trains and predict availability OR know confirmation chances of your pnr.
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Travel Booking Agent - Your own travel agency
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.
GETRIDE - Sport and extreme travel company
JabRef - Graphical Java application for managing bibtex (. bib) databases.JabRef · JabRef Help · JabRef | Blog · OpenOffice/LibreOffice .