13 Online Communities for Ideation
Updated 5/5/2026
FoundersList
FoundersList is an open platform for founders to connect, launch ideas/products, find recommended professionals/service-providers, events, cofounders and more. It is a co-founder site where people can create listings for a co-founder like they would for job ads. Founderslist offers helpful tools applicable to new founders.500 members
ForumChatEventsNewsletterJobsCourses31 views / month

Internet Pipes
on discord
Internet Pipes is a community of netizens who are excited about making sense of data openly accessible online in order to be early to trends, generate business ideas, or simply sound more interesting at your next dinner party. Think of Internet Pipes as your cheat code to the web.1K members
ForumChatPerksEventsNewsletterPaidCourses21 views / month

r/Business_Ideas
on reddit
Share and explore innovative business ideas, gain insights on initiating your venture, unravel the intricacies of 'Cost of Sale' (CoS), and decode the essentials of taxation – your nexus for entrepreneurial minds seeking to transform concepts into successful ventures.454K members
Forum17 views / month
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Startup School
Learn how to start a company, with help from the world's top startup accelerator - Y Combinator. Startup School is a free online program and global community of founders.ForumApplyPerksEvents16 views / month
Community Empire
on skool
Build Your Community Empire: From the Mind of Greg Isenberg Turn your insights & expertise into paid products & services people love: Find Your Audience Build Community Monetize with Products + Includes Skool software subscription & events The membership includes: The ACP Course: From Greg's brain to your desktop. Templates, videos, insights, and tactical guidance. Monetize your Empire Course: Learn how turn your audience into dollars with paid communities Research: monthly email with 2-3 niches that are worth building businesses in. Community: Work alongside some of the most innovative creators (includes live events and sessions) + FREE Skool software subscription included: Build your business, create courses & charge for membership. This alone is worth $99/month. Community Empire combines the all the step-by-step trainings with monthly support, expert sessions and more. 👉 $99/month for a limited time only with LIMITED SPOTS. We will increase the price soon. Cancel anytime. Sign Up Now 👉200 members
ForumPerksEventsNewsletterPaidCoursesTools13 views / month
Open Brainstorming Platform
Open brainstorming platform where people share and upgrade each other's ideas. By collectively focusing on the important topics we aim to advance the frontiers of science and make our technologies catch up with our ambitions.1K members
Forum7 views / month

Founder Institute
World's largest AI-native company builder offering free online courses for startup ideation and validation with expert mentors, community of founders, and co-founder matchingForumPairingEventsCourses4 views / month

Ideas Seeking Co Founder (Cofounder)
on linkedin
LinkedIn group to join if you have a brilliant start-up idea. You have a particular expertise but are looking for a co-founder to supplement your skills and get the business off the ground. This is the group to find co-founders.3K members
ForumJobs6 views / month

Global Alliance of Startup Co-Founders
on linkedin
GASCF is a platform that co- founder and founder can share the knowledge and experiences and extend their network. The group wishes to connect more founder and co-founder, bringing them together to share idea and find opportunity. Welcome to post articles and create discussion here.3K members
Forum8 views / month
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AngelList
Platform combining community-driven deal flow with investor networks and syndicate-building tools, helping founders connect with microfunds and track investment interestForumPairingEventsJobs![Community Placeholder]()
Wefunder
Platform for operators with deal flow to grow engaged investor communities and manage funds and SPVs for equity crowdfundingForumPairingEvents
SideProject
on reddit
r/SideProject is a subreddit for sharing and receiving constructive feedback on side projects.756K members
Forum5 views / month
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Hacker News - Show HN
Platform where indie makers share functional products and projects for community feedback and early user acquisition, designed for direct engagement with technical audienceForum
FAQ
Community size
- Tiny: 0 communities (<20 members)
- Small: 0 communities (20-100 members)
- Medium: 2 communities (100-1,000 members)
- Large: 4 communities (1,000-10,000 members)
- Huge: 0 communities (10,000-100,000 members)
- Massive: 2 communities (100,000-1M members)
- Gigantic: 0 communities (1M+ members)
Community features
Community platforms
- LinkedIn: 2 communities
- Reddit: 2 communities
- Discord: 1 communities
- Skool: 1 communities



