How to find a co-founder and present your startup on Foundersbase (formerly Founderio)
TL;DR
Foundersbase is where Founderio lives now: on 30 October 2026 founderio.com redirected to Foundersbase, a network for finding co-founders, first hires, mentors and investors. It counts 9,400+ founders, 1,100+ startups and 100+ countries, and the profile, startup page, job posts, pitch deck uploads and messaging are free. It suits solo founders looking for a partner and early teams that want to be found by talent and angels.
What is Foundersbase?
Founderio started in Berlin in 2015 as a co-founder matching site, and its founder Kai Lindemann now runs Foundersbase as Founder and CEO. The new site calls itself "the professional network built for founders" and works in 7 languages.
Members build a profile with their skills, interests, goals and location. The matching system suggests compatible co-founders, and you filter by industry, role, experience level and commitment. Around the matching sit a community feed for updates and questions, startup profiles with team, progress and open roles, a startup job board with equity and salary shown up front, and a directory where angels and VCs browse startups and pitch decks. Foundersbase reports 400+ open roles posted and 32,000+ monthly profile views, and the homepage showed member posts from the past two weeks when we checked.
Who should use Foundersbase?
- Solo founders looking for a technical, business or design co-founder.
- Pre-launch teams: the site says you need no traction to start attracting people.
- Early startups hiring for equity that want candidates who understand early-stage risk.
- Founders preparing a round who want their deck in front of registered angels and VCs.
- Skip it if you need customers or press. The audience is founders, builders and investors, and nobody here buys your product.
How much does Foundersbase cost?
- Free: creating a profile, browsing, connecting, a startup profile, job posts, pitch deck uploads and messaging. The FAQ says the main experience stays "free forever".
- Premium: adds advanced matching, priority visibility and advanced analytics. Foundersbase shows the price only after login, and we did not find a public figure.
- No recruiter fees or per-hire costs on job posts.
How do you share your startup on Foundersbase?
- Go to Foundersbase and click Get Started Free to create your personal profile.
- Fill in your skills, the role you need, your industry, stage and city, so the matching system has data to work with.
- Create a startup profile from the Grow Your Startup page with your vision, team, progress and open roles.
- Upload your pitch deck and choose who sees it: public, registered investors only, or private for direct conversations.
- Post an update in the community feed about what you build and who you need, then answer messages from matches.
Tips to get more out of Foundersbase
- Write the ask in your headline. Profiles on the homepage use headlines such as "Built CDAI Engine solo, looking for a growth partner", which tell a match the gap in one line.
- Name the equity range. Role posts that state equity and salary set expectations before the first call.
- Keep the deck on "registered investors". It reaches angels and VCs on the site without going fully public.
- Post progress every few weeks. Each feed update puts your startup in front of hires and investors again.
- Use it for people. The domain authority of 29 belongs to the old founderio.com domain, and it says nothing about the weight of a link from your profile.
Our verdict
Founderio lives on as Foundersbase, with free matching, startup pages and deck sharing that cover what most early founders need. Start on the free plan, and pay for Premium only once you see the price and a steady flow of matches.
More options: see all founder communities. Planning the launch around this listing? The Fe/male Switch startup game walks women founders from idea to first customers.