Ban Public is a French association which aims to promote communication on the issues surrounding imprisonment and detention, and to help prisoners reintegrate into society.

The Bulgarian Helsinki Committee (BHC) is an independent, non-governmental, not-for-profit civil society organisation for defending fundamental human rights in the Republic of Bulgaria, in particular these of the most vulnerable members of Bulgarian society: children, women, people with disabilities, unpopular minorities, and people deprived of liberty.

The Bulgarian Prisoners' Association is an association of prisoners and ex-prisoners in Bulgaria engaged in a collective struggle to combat the corruption of the penitentiary institutions. Its main goal is to reduce the massive difference between prisoners' rights in other EU member states and these in Bulgaria.

The Themistocles and Dimitris Tsatsos Foundation – Centre for European Constitutional Law (CECL) is non-profit European research institute. It aims to promote the development of democratic institutions, fundamental rights and the welfare state; to deepen European integration; and to strengthen international cooperation under the principle of respect to the cultural identity of each state.

Forum Penal is an association of lawyers who promotes dialogue and critical reflection among jurists, other professionals involved in criminal practice, as well as citizens in general, on the topics of criminal law, criminal procedure, penitentiary and administrative offenses in view of the protection of the fundamental rights of citizens in Portugal.

The Georgian Young Lawyers’ Association (GYLA) is a non-governmental organisation dedicated to protecting and promoting human rights and the rule of law in Georgia. GYLA’s goals are to raise awareness of human rights amongst the public and key stakeholders, ensure access to justice and uphold human rights, and improve standards of legal education. It provides free legal assistance and representation to individuals on civil, criminal, and administrative law matters, and conducts strategic litigation in national courts and before the European Court of Human Rights, runs moot courts for law students to develop their practical experience, and operates a legal aid clinic in Tbilisi staffed by volunteer law students.

The Helsinki Foundation for Human Rights (HFHR) is the the oldest non-governmental organisation working for the protection of human rights in Poland and in the Eurasian region. HFHR aims to reinforce the human rights movement in the world and the social support for this concept, in order to live in a place, where our individual and community rights are obeyed and laws are drafted with respect for human dignity.

The Hungarian Helsinki Committee (HHC) is a public benefit human rights organisation that protects human dignity through legal and public activities in Hungary. It provides help to refugees, detainees and victims of law enforcement violence.

The Kharkiv Human Rights Protection Group (KHPG) is one of the oldest Ukrainian human rights organisations. KHPG's mission is, on the one hand, to protect human rights and fundamental freedoms from infringement by the State and, on the other, to assist the State in asserting and protecting these rights and freedoms.

The Kosova Rehabilitation Centre for Torture Victims (KRCT) is a non-governmental organisation that was founded in 1999 with the mission to provide treatment and rehabilitation for Kosovar victims of torture. KRCT continuously works to provide services on trauma and torture related issues. KRCT is also engaged in promoting the respect of human rights for all of Kosova’s ethnicities and in the prevention and eradication of torture and any form of ill-treatment.

The documentation centre “L’Altro Diritto” was founded in 1996 within the Department of Theory and History of Law at the University of Florence, with the aim of carrying out theoretical reflection and sociological research on the themes of social exclusion, deviance, penal institutions and prisons, and disseminating knowledge on these subjects to social workers and academics dealing with these issues.

Prisoner’s Advice Service (PAS) pursues prisoners’ calls for help about their treatment in prison by providing advice and information and, where appropriate, taking legal action.

Promo-LEX Association is a non-governmental organisation that aims to advance democracy in the Republic of Moldova, including in the Transnistrian region, by promoting and defending human rights, monitoring the democratic processes, and strengthening civil society.

The non-governmental organisation "Protection for prisoners of Ukraine" is a community of people, including former prisoners, engaged in the protection human rights and the rule of law in Ukraine, in particular the reform of the penitentiary system as a place where all the problems and contradictions of society are concentrated.

Strafvollzugsarchiv ("Prison Archive") is an association founded by Professor Johannes Feest in 1977. The central activity of the prison archive is to provide advice to prisoners in Germany by answering their letters and requests about their legal situation and possibilities of litigation It also collects and analyses literature and judicial decisions about prisons and prison law in Germany and carries out research about prison law in action and about the experience of imprisonment.

Tatort Zukunft e.V. is a non-governmental organisation aiming to provide innovative, evidence-based education, counselling and rehabilitation activities in and on the German prison system and to question in general the broader criminal justice system.

Ukraine without Torture is a non-governmental organisation aiming at eradicating torture and ill-treatment of persons in places of detention in Ukraine. It brings together public monitors of the national preventive mechanism, and organises visits all places of detention, to promote changes and improvement of conditions of detention.

The Association of Austrian Defense Lawyers aims at strengthening the independent and professional practice of criminal defense as an essential feature of the rule of law.