| # | Company | Employees |
|---|---|---|
| 1 |
Greenpeacegreenpeace.org
An international organization with 25 independent branches, Greenpeace works with communities globally to protect the environment and promotes diversity in the workplace |
3,036 |
| 2 |
Humanitashumanitas.nl
Humanitas provides free professional support through well-trained volunteers to individuals facing various challenges, focusing on six different themes in a personal and locally organized manner |
2,186 |
| 3 |
IFMSA | International Federation of Medical Students'β Associationsifmsa.org
A global organization empowering medical students to lead initiatives in global health, promoting cultural awareness and collaboration, and shaping a sustainable future |
1,259 |
| 4 | 901 | |
| 5 | 797 | |
| 6 |
War Child Nederlandwarchild.nl
An international organization providing psychosocial support, education, and protection to children and young people affected by armed conflict worldwide |
595 |
| 7 |
De Regenboog Groepderegenboog.org
The organization provides support and opportunities for marginalized individuals in Amsterdam, aiming to create a more inclusive and compassionate society |
555 |
| 8 |
IVN, Instituut voor natuureducatieivn.nl
A company dedicated to promoting a green, healthy, and sustainable Netherlands by bringing nature into people's hearts through various activities and initiatives |
543 |
| 9 |
Ouder- en Kindteams Amsterdamoktamsterdam.nl
Providing accessible youth support and healthcare services in Amsterdam, focusing on healthy child development and parenting Offering expertise and collaboration for families |
495 |
| 10 |
Greenpeace Internationalgreenpeace.org
Global campaigning network promoting environmental protection, conservation, and peace Committed to diversity and equal opportunity employment Operating in 55+ countries worldwide |
474 |
| 11 |
KWF Kankerbestrijdingkwf.nl
The company works towards fighting cancer, conducting life-changing research, providing support, and striving for a better life for those affected by the disease |
455 |
| 12 |
Artsen zonder Grenzen Nederlandartsenzondergrenzen.nl
Providing medical aid to those in need regardless of race, politics, or religion Taking action to help where aid is lacking |
428 |
| 13 |
WorldSkills Internationalworldskills.org
A global membership association promoting vocational education and training across countries/regions, operating neutrally and dedicated to skill development |
367 |
| 14 |
HealthNet TPOhealthnettpo.org
The company focuses on empowering individuals in fragile and conflict settings to rebuild their lives, health, and wellbeing |
351 |
| 15 |
Stichting SPARKspark.ngo
The company focuses on empowering youth in conflict affected areas through higher education and entrepreneurship to improve economic opportunities and sustainability |
311 |
| 16 | 307 | |
| 17 |
Global Reporting Initiative (GRI)globalreporting.org
Development of global standards, tools, and training for transparent sustainability reporting on environmental, social, and economic impacts worldwide. |
303 |
| 18 |
War Childwarchild.net
The company is dedicated to ending child involvement in war, advocating for children's rights to grow up in peace and safety |
302 |
| 19 |
AIESEC in the Netherlandsaiesec.org
A global youth organization developing leadership skills in young people and connecting them with companies worldwide for international talent recruitment solutions |
290 |
| 20 |
Amnesty International Nederlandamnesty.nl
A global movement with millions of members in 150+ countries campaigning to end human rights abuses through research and advocacy |
226 |
| 21 |
World Agriculture Forumworldagricultureforum.org
Global platform connecting stakeholders for sustainable agriculture through policy advocacy, trade facilitation, technology, and public-private partnerships. |
179 |
| 22 |
nlgroeitnlgroeit.nl
A public-private partnership focused on boosting growth potential in small and medium-sized businesses in the Netherlands, launched in January 2016 |
175 |
| 23 | 173 | |
| 24 |
Mama Cashmamacash.org
Supporting women, girls, and trans people globally by providing grants, knowledge sharing, and networking opportunities to advance their human rights |
151 |
| 25 |
Get it donegetitdone.org
A network promoting a new mindset focused on contribution and meaningful actions through webinars, workshops, and social projects worldwide |
151 |
| 26 |
Mondriaan Fundmondriaanfonds.nl
A public fund in the Netherlands supporting visual art and cultural heritage projects, exhibitions, and publications, fostering Dutch art internationally |
147 |
| 27 |
ELANCE Academyelanceacademy.nl
This company coaches, trains, researches, inspires, and connects young women to develop their skills, dreams, and ambitions for a more inclusive and economically independent future |
80 |
| 28 |
UEBT - Sourcing with Respectuebt.org
A non-profit promoting ethical sourcing of biodiversity ingredients for personal care, cosmetics, food, and pharmaceutical sectors, verifying and certifying companies' commitment |
65 |
| 29 |
Health[e]Foundationhealthefoundation.eu
This non-profit organization offers high quality blended learning programs for healthcare workers worldwide on various crucial health topics |
5 |
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 10, 2026.
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