Reform Judaism is the modernizing factor and branch within Judaism. They have separated themselves largely from a lot of the old jewish traditions. For example, where Orthodox Judaism strictly do not allow computers in the house, a lot of Reform Jewish people carry iPhones and laptops just like most of the modern world.
They often see their faith as sort of an ethical monotheism, where they follow and believe in God, or are otherwise Agnostic, but still consider themselves Jewish.
There is a large movement and support within Reform Judaism for equal rights among LGBT communities, and they are very open to inter-faith marriage, and working and striving to understand other faiths together as well.