Human Rights Campaign: works to provide employers the resources they need to improve and promote fairness in the workplace, with tools including the Corporate Equality Index
#HackHarassment: a coalition of organizations and individuals working towards an online community free from harassment.
RAINN (Rape, Abuse & Incest National Network): the nation's largest anti-sexual violence organization. Carries out programs to prevent sexual violence, help survivors, and ensure perpetrators are brought to justice.
It's On Us launched out of the White House during the Obama Administration, It's On Us is a national movement to end sexual assault. While more targeted towards university-age persons, its focus on culture change makes it relevant to all sexual violence issues.
Crisis Text Line: serves anyone, in any type of crisis, providing access to free, 24/7 support and information. Text 741741 from anywhere in the US to text with a trained Crisis Counselor.
Hollaback! a global, people-powered movement to end harassment by igniting public conversations and developing innovative strategies that ensure equal access to public spaces.
National Partnership for Women & Families: the National Partnership develops and distributes materials to raise awareness about sexual harassment in the workplace, and how to confront it, and works to improve and enhance the federal government's efforts to eliminate harassment.
National Organization for Women (NOW): with chapters in all 50 states, NOW advocates and lobbies in the interest of women and girls all over the country, including in the issue area of violence against women (which encompasses sexual harassment). For example, they vocally called for Bill O'Reilly's firing.
Equal Justice Works: aims to create a just society by mobilizing the next generation of lawyers committed to equal justice. EJW provides leadership to ensure a sustainable pipeline of talented, trained lawyers are involved in public service.
NWLC: champions policies and laws that help women and girls achieve their potential at every stage of their lives - at school, at work, at home, and in retirement.
ACLU works in this area as well.
Equal Employment Opportunity Commission: the first place one should go to formally report a transgression.