Plan Holidays - Specialized in operating tours and treks to Nepal, Tibet, Bhutan, Sikkim, Ladakh and Northern India. - http://www.planholidays.com/
Parajuli Trekking Pvt. Ltd. - Adventure and trekking options in the Himalayas with home stay packages. - http://www.parajulitrekking.com/
Peace Nepal Treks - Trekking and other adventure activities in the Himalayas. - http://www.peacenepaltreks.com/
Parikrama Treks and Expeditions - Offers trekking, expeditions, whitewater rafting, jungle safari, city sightseeing, hotel accommodation, tours and treks in Tibet and Bhutan also family vacations and holiday trips in Nepal. - http://www.paritreks.com/