If you are going to start an online travel agency, then you have to go for a CRM tool which can track your business. At the beginning period, you can go a free or cheap online CRM which will manage your valuable data securely and in a constructed way. GrowTravel is the best online CRM for a start-up inline business dealing with travels. It has awesome designed business graphs, and other featured to manage your data in a single place. It can also generate multiple reports to study business growth properly.