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A curated platform for founders and operators to find a co-founder, bundled with a toolkit of legal templates and calculators for vesting, runway, and NDAs.
What to know▼
How it works
Curated founder/operator profiles plus a co-founder toolkit of guides, legal templates, and calculators.
Best for
Founders looking for a co-founder outside of informal channels.
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Market research tool that turns signals from Reddit, job ads, podcasts, and Google Trends into business ideas you can inspect.
Free
What to know▼
How it works
Turns recurring demand signals from Reddit, job ads, podcasts, Google Trends, and product launches into inspectable business ideas with sources, demand trend, and an opportunity score.
We check every product on this page once a day and record whether it still answers.
An on-device simulator that runs Monte Carlo projections on your business plan's revenue, costs, and runway assumptions to estimate survival odds before you invest capital.
Watch out · Includes a separate trade module for exchange rates, tariffs, and Incoterms.
Works offline
What to know▼
How it works
Enter revenue/cost/margin/runway assumptions, run Monte Carlo simulations to see survival probability and risk drivers.
What's different
Inputs and results stay on-device rather than in the cloud.
Watch out
Includes a separate trade module for exchange rates, tariffs, and Incoterms.
We check every product on this page once a day and record whether it still answers.
A platform pairing students with startup projects and internships, giving students real experience and giving startups early talent and idea validation.
What to know▼
How it works
A platform where students take on real startup business challenges and projects, join startup communities, and connect with founders, while startups use it to find interns and get early idea validation.
Best for
Students seeking real startup experience, and early-stage startups looking to hire interns or validate ideas with outside talent.
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A research tool that tracks SaaS businesses' estimated revenue, active ads and growth signals, helping indie hackers, founders and marketers spot opportunities before building.
What to know▼
How it works
Tracks SaaS businesses' estimated revenue, active ads and growth signals to surface potentially profitable, validated business opportunities.
Best for
Indie hackers, founders and marketers researching what to build next before committing.
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A research tool that simulates synthetic audiences to produce decision reports (positioning, pricing, launch plans) with cited evidence.
What to know▼
How it works
Researches the live web, builds segmented synthetic audiences, runs parallel simulated interviews and diffusion scenarios, then delivers a consulting-style report with citations and uncertainty ranges.
Best for
Teams testing positioning, pricing or launch plans before spending on real-world validation.
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Helps founders break a business plan into testable hypotheses, ranks them by risk, and coaches customer interviews so they get honest validation instead of polite feedback.
What to know▼
How it works
Breaks your plan into testable hypotheses, ranks them by risk, and coaches your customer interviews.
What's different
Aims to surface the truth from interviews rather than polite feedback.
We check every product on this page once a day and record whether it still answers.
A tool that turns founder-community discussions into source-backed validation briefs on pain points and buyer language.
What to know▼
How it works
Turns founder-community discussions into source-backed validation briefs highlighting repeated pain points, buyer language, and the next test worth running.
We check every product on this page once a day and record whether it still answers.
A daily app idea generator with a validation score, aimed at solo indie developers stuck on what to build next; the full idea library needs a subscription.
What to know▼
How it works
Sends a daily app idea to solo and indie developers, with a validation score attached to each idea; members can browse past ideas.
Pricing
Free tier gives the daily idea; a paid subscription unlocks the full idea database and idea-generation strategy library.
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A browsable database of 222+ micro-SaaS keyword ideas with search volume, difficulty and revenue estimates, for people hunting for a startup idea to build.
What to know▼
How it works
A browsable database of 222+ micro-SaaS keyword ideas, each with search volume, keyword difficulty, and revenue estimates.
Best for
People looking for a startup idea backed by real search demand data rather than brainstorming from scratch.
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Daily-updated directory of vetted business and side-hustle ideas, for people looking to start a second income stream, instead of brainstorming ideas from scratch.
What to know▼
Best for
People searching for a validated side project or side-income idea.
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A Portuguese-language guided questionnaire that turns a business idea into a clarity diagnostic, landing-page copy, pricing hypotheses, and a seven-day pre-sale sprint to test demand with real buyers.
What to know▼
How it works
Answer six guided questions to get a positioning draft and pre-sale plan; the tool structures assumptions for testing, and real buyers provide the evidence.
Best for
Portuguese-speaking founders and creators validating a new offer before building it.
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A market-research platform that generates competitor analysis, buyer personas, and go-to-market strategies for early-stage founders without writing code.
What to know▼
How it works
Aggregates live market data to build buyer personas, map competitor weaknesses, and run 'fake door' demand tests.
Best for
Early-stage founders validating a startup idea before building an MVP.
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A board where early founders post what they're building and what skill they're missing - marketing, design, a co-founder - to find collaborators before raising funding.
What to know▼
How it works
Early builders post what they're building and what skill they're missing; other members send structured collaboration offers to form small teams before funding.
Best for
Early-stage founders, marketers, and designers looking for co-founders or collaborators before raising money.
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Simulates a synthetic audience to test ads, landing pages, and pricing before launch.
What to know▼
How it works
Builds a synthetic audience to test ads, landing pages, products, pricing, and messaging before launch, showing where people hesitate, misunderstand, or object at both audience and individual level.
Best for
Teams wanting to test messaging or pricing before launching.
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Free calculators and decision tools for startup founders and CTOs, including an MVP cost estimator, a burn-rate calculator, and a build-vs-buy analyzer.
Free
What to know▼
How it works
Offers an MVP cost estimator, burn-rate calculator, and build-vs-buy analyzer among other calculators and decision tools.
Pricing
Free.
Best for
Startup founders and CTOs making planning decisions.
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Bizdar shows which types of businesses are underserved in a given US zip code using competitor and demographic data, for people scouting where to open a business.
FreeNo sign-up
What to know▼
How it works
Pulls live competitor counts from Google Places, US Census demographics, and gap scores across 50+ business categories mapped by zip code.
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A skincare cream product page whose listed description is unusable — it consists of leftover placeholder text rather than product information.
Watch out · The description text is literally an AI prompt-response fragment ("Here are a few one-line English tagline options..."), not real product copy.
What to know▼
Watch out
The description text is literally an AI prompt-response fragment ("Here are a few one-line English tagline options..."), not real product copy.
