stars 1 stars 2 stars 3

View Opportunity Knocks's top competitors like Catchafire, DoSomething.org, and FlexJobs.

The Bridgespan Group
The Bridgespan Group is a global nonprofit that strives to make the world more equitable and just. Since 2000, we have had the privilege of advising and collaborating with many of the world’s most extraordinary social change leaders including philanthropists, nonprofit and NGO leaders, and mission-aligned private capital partners. We are passionate about helping social change leaders find solutions to economic and social barriers that perpetuate inequities and prevent individuals, families, and communities from having access to opportunities they need to thrive. We use rigorous research to gain insights that help our clients solve problems and achieve their goals. Our services include strategy consulting and advising, sourcing and diligence, and leadership team support. We take what we learn from this work and build on it with original research, identifying best practices and innovative ideas to share with the social sector.
Boston, Massachusetts, US
Non profit
$10.5M Revenue
http://www.bridgespan.org
511 Employees
Catchafire
Catchafire is a place for people to come together and do good. We bring together philanthropy, business, government, and volunteers with the goal of bridging paths to stronger communities. As the leading online platform for nonprofits to connect with skills based volunteers, we’ve seen firsthand how connections and relationships build impact. Every day, we help communities grow stronger by listening to what they need and making sure they get resources. Together, we are able to shift resources and power to strengthen communities. Our platform has helped nonprofits create over $250 million dollars in value, with over 1 million volunteer hours donated. Get involved at catchafire.org.
New York, New York, US
Non profit
http://catchafire.org
423 Employees
VolunteerMatch
VolunteerMatch, Powered by Idealist is the world's largest volunteer recruitment and engagement network. In 2025, VolunteerMatch joined forces with Idealist to form a unified platform, connecting individuals who want to do good with social-impact opportunities. Together, we've connected 250,000+ organizations with over 40 million individuals, delivered billions of dollars in social impact, and engaged hundreds of thousands through free educational opportunities, webinars, and events. To learn more and get involved, visit idealist.org.
New York, New York, US
Non profit
$9.6M Revenue
https://idealist.org
298 Employees

Top Opportunity Knocks Employees

View Similar People
Learn More
How It Works
get free account
Get a Free Account
Sign up for a free account. No credit card required. Up to 5 free lookups.
search page
Search the #1 Contact Database
Get contact details of over 700M profiles across 60M companies – all with industry-leading accuracy. Sales and Recruiter users, try out our Email Finder Extension.
get contact page
Use our AI-Powered Email Finder
Find business and personal emails and mobile phone numbers with exclusive coverage across niche job titles, industries, and more for unparalleled targeting. Also available via our Contact Data API.
G2 Leader Summer 2026 G2 Best Est ROI Mid-Market Summer 2026 G2 Easiest Admin Mid-Market Summer 2026 G2 Most Implementable Summer 2026 G2 Best Results Mid-Market Summer 2026 G2 Lead Capture Mid-Market Summer 2026 Inc Fastest Growing Private Companies 2026 Inc Best Workplace 2026
g2crowd
G2Crowd Trusted
chromestore
300K+ Plugin Users