The Democratic Alliance and the United Democratic Movement are part of the organisation.
Speaking to the media, Prince Mashele of the Freedom Movement says South Africa is facing a crisis.
"The political mismanagement of our contry has reached a boiling point. It threatens to collapse the economy," he said.
Opposition political parties have recently taken to streets as a united front to protest against President Jacob Zuma, calling for his resignation following his recent Cabinet reshuffle last month
Zuma axed nine ministers and six deputies, including former finance minister Pravin Gordhan and his deputy Mcebisi Jonas.
Desmond Tutu showed his support on Twitter, saying "It is important that we unite as South Africans to bring an end to state capture."
In principle Aunt Leah and I are in support of a united coalition calling on all South Africans to join the Freedom March #freedommovement
It is important that we unite as South Africans to bring an end to state capture #freedommovement
Further the values of our democratic society by speaking out against any and all kinds of injustice in our society. #freedommovement
Rating agencies Fitch and Standard&Poor have both since downgraded South Africa’s economy to junk status.