Alliance

According to Eleventh Doctor, an alliance was made up of people and groups working together. (TV: The Pandorica Opens)

Alliances
Rassilon led the Alliance of Races against the Hyperions and other species. (COMIC: Terrorformer, Gangland)

The Alliance, described by River Song as "everything that ever hated" the Doctor, were a gathering of numerous species whose combined fleets came to Earth in 102, where their representatives saw that the Eleventh Doctor was sealed within the Pandorica; believing him to be the cause of the cracks in time that were endangering the universe, the Alliance sought to contain him in order to save reality. (TV: The Pandorica Opens) However, the Alliance failed to realise that the cracks were caused by the destruction of the Doctor's TARDIS, resulting in a total event collapse which all but wiped them from history, leaving only stone after images before the Doctor performed Big Bang Two to restore the universe. (TV: The Big Bang)

In 1928, the families of Ablemarch, Costerdane and Frines made an alliance to acquire Jack Harkness' immortality, becoming the Three Families. (TV: End of the Road)

The Alliance of Shades was an organisation created to hide alien secrets from humanity since at least the 1950s. They used the android Men in Black as agents. (TV: Dreamland, TV: The Vault of Secrets)

The Uvodni were part of a Planetary Alliance that fought the Malakh in the Ghost Wars of the Horsehead Nebula. When other allied worlds had been crushed by the Malakh Empire, the Uvodni continued to fight until an armistice was signed in the late 1990s. (TV: Warriors of Kudlak)

The Alliance was a defensive organisation created in the 22nd century, after the Dalek invasion. (PROSE: Original Sin, PROSE: Lords of the Storm)

The Alliance were a band of races who were led by the Fifth Doctor as the Supreme Co-ordinator or "Supremo" on behalf of the Time Lords in a war against Morbius. (PROSE: Warmonger)

The Cyrrhenic Alliance, also known as the Alliance, was a group of aligned planets, including Levithia and Ribos that fought in the Alliance Wars. (TV: The Ribos Operation)

The Earth Alliance was a political entity, centred on Earth, that was formed by the 22nd century and became the dominant form of human government in the Mutter's Spiral from at least the 36th century to several centuries later. It was a more loose alliance of human colonies against common threats than the earlier and more politically integrated Earth Empire. (AUDIO: The Sirens of Time, Invasion of the Daleks)

The Galactic Alliance was represented by Ambassador Rahnius, as well as undercover agents Bill and Bott. (TV: From Raxacoricofallapatorius with Love, PROSE: Martha in the Mirror)

In 4000, the Daleks assembled a Great Alliance with representatives of the Outer Galaxies to invade the solar system. However, the Outer Galaxies were betrayed by the Daleks. (TV: Mission to the Unknown, The Daleks' Master Plan)

In the 51st century, the Icelandic Alliance and the Supreme Alliance fought World War VI on Earth. (TV: The Talons of Weng-Chiang, PROSE: Emotional Chemistry, Under Reykjavik)

The Raxas Alliance was composed of the planets Raxacoricofallapatorius, Clom, Clix and Raxacoricovarlonpatorius. (TV: The Gift, COMIC: Doctormania)

In the year 200,100, the New American Alliance existed on Earth when the planet was ravaged by the Daleks. (TV: The Parting of the Ways)

Failed alliances
In 2007, the Cybermen of Pete's World proposed an alliance with the Daleks, represented by the Cult of Skaro, claiming that their combined powers could "upgrade the universe." The Daleks, however, quickly denied this request, leading to immediate hostilities in the Battle of Canary Wharf. (TV: Doomsday)