6 Best Websites to Find a Co-Founder in 2026

You are looking for a website to find a co-founder, and you want the honest version, not a list padded with whatever the author could think of. Here it is, refreshed for 2026.

A few of the sites that used to top these lists are gone or have changed. Below are the six that are still worth your time, what each is genuinely best at, and the honest catch on every one. Then one thing worth doing before you commit to a co-founder at all.

Here is how the six stack up before we get into each one.

The 6 best websites to find a co-founder

1. Y Combinator Co-Founder Matching

Y Combinator’s free Co-Founder Matching tool is the biggest and best-known option, and the right place for most founders to start. You build a profile, set what you are looking for, and work through other vetted founders. It is free, the pool is enormous, and the people are serious about starting a company. The catch is volume: you will sort through a lot of profiles to find the few worth a call. Try YC Co-Founder Matching.

• Free, run by Y Combinator
• The biggest pool, with profiles vetted for seriousness
• You set your criteria and work through matches yourself
• High volume, expect to sort many profiles for a few real calls

2. CoFoundersLab

CoFoundersLab calls itself the largest startup community on the internet, and it has been matching co-founders, advisors and team members for over a decade. You can filter by skills, location and commitment level, which makes it strong for a broad search. It is free to browse, but the most useful filters and outreach sit behind a paid membership. Visit CoFoundersLab.

• Matching co-founders, advisors and team members for over a decade
• Filter by skills, location and commitment level
• Free to browse
• The best filters and outreach sit behind the paid membership

3. Antler

Antler is a global early-stage program that pairs founders, then invests. You apply to a residency, spend weeks meeting potential co-founders in person, and the ones who click build a company together with Antler’s backing. It is the most hands-on option here, and the most selective. Free to apply, but Antler takes equity if you join and get funded, and it is a real commitment rather than a quick search. Visit Antler.

• An in-person residency that pairs founders, then invests
• The most hands-on and most selective option on this list
• Free to apply
• Takes equity if you join and get funded, a real commitment

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4. FoundersList

FoundersList is a lighter community for connecting with startups, founders and freelancers, with a dedicated co-founder section. It is smaller than the big platforms, which can mean less noise, but also a thinner pool depending on your niche. A good second stop once you have tried the larger tools. Visit FoundersList.

• A lighter community with a dedicated co-founder section
• Smaller pool, which also means less noise
• Covers founders, startups and freelancers
• A good second stop after the bigger platforms

5. Indie Hackers

Indie Hackers is the home of bootstrapped and indie founders. There is no formal matching tool, but the community is active and full of people building in public, which makes it a natural place to find a co-founder who shares a bootstrapper mindset rather than a venture one. You find people by being useful in the community, not by swiping. Visit Indie Hackers.

• The home of bootstrapped and indie founders
• No formal matching tool, the community is the tool
• You find people by being useful, not by swiping
• Right for a bootstrapper co-founder rather than a venture-track one

6. FounderCloud (formerly StartHawk)

If you remember StartHawk, this is where it went: it has rebranded to FounderCloud and shifted toward a feed of startup ideas, where founders post what they are building and look for the co-founder they need. It still has a browse-co-founders feature, but it is now as much an ideas board as a matching tool. Worth a look if you are idea-stage and want to browse projects. Visit FounderCloud.

• StartHawk rebranded, now as much an ideas board as a matcher
• Founders post what they are building and who they need
• Still has a browse-co-founders feature
• Best if you are idea-stage and want to browse projects

You might meet the next person you build something with

Here is the honest version of where GrowthMentor fits on a list like this. It is not a co-founder matching site. You do not come here to swipe through profiles looking for a co-founder.

But it happens anyway, enough that it is worth mentioning. People meet on a session, click, and stay in touch. Sometimes the mentee hires the mentor. Sometimes they collaborate later. We have had mentors find their next co-founder on the platform, and whole businesses come out of conversations that started as 30-minute calls.

We do not take a cut of anything that happens after a session. If you end up building something with someone you met here, that is between you. Three of those stories, on the record:

A mentor and his mentee became co-founders

Harri Thomas & Vito Margiotta

Co-founders of Elephants, met on GrowthMentor

Passing the Torch · Ep. 5 · Watch on YouTube →

A mentor built a six-figure business with his mentee

Etan Efrati & Jack Zerby

Co-founders of Design for Decks, met on GrowthMentor

Passing the Torch · Ep. 1 · Watch on YouTube →

A founder hired his mentor after one call

Morgan Schofield

Helped a founder on a call, became his marketing director

Passing the Torch · Ep. 6 · Watch on YouTube →

The point is not that GrowthMentor will find you a co-founder. It is that talking to people who have already built what you are building is the fastest way to work out what you need, whether that is a co-founder, a first hire, or just a better plan. If you do go looking for a co-founder, our guide on finding a marketing co-founder covers the equity and recruiting side. Either way, start with a call.

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