Ontocore specializes in self-leadership development, focusing on personal growth and transformation. Their unique approach is centered around helping individuals identify and express a more authentic version of themselves as leaders. The company emphasizes the importance of knowing one's unique purpose and awakening an individual's full potential. Their training programs are designed to inspire greater performance through self-awareness and personal expression as leaders.

ONYX Academy specializes in offering high-level courses, seminars, workshops, and masterclasses in the fields of beauty, wellness, aesthetics, marketing, and business. The academy focuses on personal and professional growth to help transform individuals' passions into successful and fulfilling careers. Operating since 2008, ONYX Academy has trained over 50,000 students, leveraging more than 30 locations for in-person learning and providing online options. Their unique selling point involves the collaboration with major experts in their respective fields.

OOSE eG is a Hamburg-based training company with over 20 years of experience, offering seminars, workshops, and coaching sessions across the German-speaking region. As a cooperative with over 120 different seminars and a client base of more than 5,500 customers and 20,000 participants, their unique selling point lies in self-organized work structures without formal leaders, fostering a collaborative learning environment. The company emphasizes continuous improvement and development in educational content and delivery.

Osbourne Purdie is an experiential-marketing and training agency specializing in the automotive sector, offering a blend of innovation and practical experience. Operating since 1992, it has executed over 1,000 commercial training and leadership programs, notably for over 40 automotive brands. Known for a learner-centric, virtual-first approach, the company is dedicated to enhancing client experiences through innovative solutions, focusing on reducing staff turnover and optimizing learning outcomes. With offices in Maidenhead, UK, and Orlando, USA, it offers strategic and operational programs, adapting training delivery to modern demands for efficiency and accessibility.

Opeaklife, founded by accredited life coach Lisa Wong, specializes in personal transformation and self-development coaching. The company uses coaching methodologies that integrate NLP, mindfulness, and sensory intelligence to promote profound changes in clients' lives. They offer customized programs for individuals and corporate clients, focusing on developing emotional intelligence, overcoming stress or anxiety, and building confidence for personal and professional growth. Their unique selling point is the blend of therapeutic techniques aimed at empowering individuals to live fulfilling and purposeful lives.

Open Door Coaching specializes in providing premier coaching qualifications and training in Australia. Their courses are unique as they offer pathways to attain both International Coach Federation (ICF) credentials and Australian Government-accredited qualifications in workplace coaching. The programs include the Diploma of Organisational Coaching and Certificate IV in Workplace and Business Coaching, accredited as Level 1 and Level 2 by ICF. Open Door Coaching is recognized for delivering tailored services for individuals seeking to upgrade their coaching skills to the highest levels, offering practical toolkits for team coaching and leadership workshops. The company sets itself apart with its commitment to building high performance in the workplace through professional coaching.

Open Mind Management, established in 2010 in Latvia, is a global business consulting company. It offers a range of services including diagnostics, consulting, coaching, and training, focusing on personal and business development for sustained success. As representatives of Clutterbuck Coaching and Mentoring International in Eastern Europe and Genos International Emotional Intelligence products in Central and Eastern Europe, they are renowned for their expertise in leadership development and emotional intelligence. Their approach emphasizes understanding client needs before making recommendations and supporting clients in achieving their goals with comprehensive training in new skills and methodologies.

Opportunity Knocks of Wisconsin, spearheaded by Wendy Terwelp since 1998, offers highly interactive training programs specializing in career advancement, personal branding, and networking skills. Their unique methods focus on helping clients identify their strengths, communicate value effectively, and build networks to achieve career and professional development goals.

Optical Dispensers Australia (ODA) provides specialized training in optical dispensing, with a focus on healthcare education. They support professional development with a well-rounded training offering that includes certifications. Their unique selling points include participation in international conferences and community outreach projects, enhancing both the technical and soft skills of healthcare professionals.

Optima Training (UK) Limited specializes in coaching, meeting facilitation, and business training to enhance individual and team performance. With over twenty years of experience, the company prides itself on delivering tailored training solutions that stimulate innovative business ideas. Their expertise includes leadership, communication, and management training, highlighting their commitment to making a significant impact on organizations and professionals.

Optimum Consulting specializes in assisting clients within the manufacturing, wholesale, and retail industries to optimize their systems using Microsoft Dynamics 365 and Power Apps. The company focuses on helping organizations address challenges related to customer engagement, process optimization, and e-commerce transformation. By employing a hybrid implementation model combining Agile and Waterfall methodologies, Optimum Consulting ensures efficient and rapid system integration. The company's services include ongoing managed support to leverage the latest technological advancements, ensuring businesses remain competitive and adaptable to changing market demands.

Optimus Coach Academy offers ICF accredited coach training focusing on psychology-based and scientific coaching approaches, utilizing their unique Brain Focused Coaching Method. Their courses are accredited by leading global organizations such as the International Coaching Federation, the European Mentoring and Coaching Council, and the Association of Coaching. They emphasize a holistic, evidence-based approach to help clients achieve sustainable change, providing a rich understanding of human cognition, emotion, and behavior. The academy supports aspiring coaches with various techniques, online business programs, and mentoring. Two diploma levels are offered, with pathways to ACC and PCC ICF accreditation. Group sizes are kept small to ensure a good trainer/student ratio and intimate learning environment.