Manager's Resource Handbook Competitors

Connecting the world's professionals to make them more productive and successful. Founded in 2003, LinkedIn connects the world's professionals to make them more productive and successful. With more than 450 million members worldwide, including executives from every Fortune 500 company, LinkedIn is the world's largest professional network on the Internet. The company has a diversified business model with revenue coming from Talent Solutions, Marketing Solutions, and Premium Subscriptions products. Headquartered in Silicon Valley, LinkedIn has offices across the globe.

We’re Project Management Institute. You can call us PMI. We’re the world’s leading professional organization for project, program, and portfolio management. We support current project professionals, aspiring project professionals, and anyone with projects to tackle. Many know us for the PMP® certification, but there's so much more to explore. Since 1969, we’ve been providing top-notch knowledge, resources, and networking opportunities. Connect with our incredible global community and see how PMI can light your path to project success. Join us as we elevate our world—one project at a time.

Harvard Business Review is the leading destination for smart management thinking. Through its flagship magazine, international licensed editions, books from Harvard Business Review Press, and digital content and tools published on HBR.org, Harvard Business Review provides professionals around the world with rigorous insights and best practices to lead themselves and their organizations more effectively and to make a positive impact. We are grateful for our HBR community and are glad you’ve joined us. We encourage comments, critiques, questions, and suggestions on our social media posts. We expect our communities to be a safe space for respectful, constructive, and thought-provoking discussion. We reserve the right to remove or turn off comments at our moderators’ discretion. We do not tolerate bullying, name-calling, or abusive language related to identity, including race, gender, ethnicity, religion, sexuality, age, or region; spam; copyright violation; extreme profanity; or pornography. We may also remove content that is overly promotional or off topic. HBR Group is a division of Harvard Business Publishing (HBP), a not-for-profit, independent corporation that is an affiliate of Harvard Business School. With over 600 employees located in Boston (HQ), New York City, Australia, France, India, Mexico, the Netherlands, Singapore, the United Arab Emirates, and the United Kingdom, we serve as a bridge between academia and enterprises around the globe.