Indie maker launch and validation
Startup idea validation tools
AI-driven tools that research, score, stress-test, and critique startup ideas using market data, competitor scans, and online conversations, with some idea discovery and founder community features, for founders deciding what to build.
Built for: Early-stage founders and indie hackers
Projects since May 04
261
Different builders
247
Last 4 weeks vs 8 before
▼ -26%
AI is the core
43%
Projects per week
Mostly web app (74%), ai agent or bot (7.7%), content or community site (5.4%) · from r/SideProject, r/SaaS, r/IMadeThis, r/vibecoding
Latest
- Nomiq — Turns a raw product concept into a coherent brand direction covering naming, logo, colors, typography and social assets.“I've been building an AI tool to solve something that kept annoying me as a founder”
- Tinder for ideas — Lets users swipe through business ideas and pick which ones are worth pursuing.“I had 136 ideas in Notion and built none of them. So I built Tinder for my ideas.”
- Sells a one-time-purchase database of business ideas.“How deleting my free tier made more in 3 days than it made all year”
- ClimateCapMap — Maps funding options for climate tech companies across development stages, with example financing journeys and linked sources.“I built a free interactive guide to how climate tech companies get funded”
- SideFrog — Evaluates a side hustle idea and returns a quick viability read, likely customers, a cheap test plan, search checks, and domain name suggestions.“I built a side hustle validator for people with too many ideas”
- Marcus — Generates a web app, branding, marketing content, UGC ad videos and US company registration from one idea prompt, then runs the business with automated outreach and support.“We got tired of spending 3 weeks on setup before testing an idea, so we built something that does it in 5-8 minutes. Roast it!”
- SideSus — Checks the web for existing competitors to a one-sentence business idea and reports how saturated the market is.“I'm always coming up with random business ideas, so I built a free tool that checks if they've already been done. Would love your honest feedback”
- PMF Hunter — Helps technical founders work out how to explain their shipped product, and asks for feedback on the tool.“I built a small tool for founders who shipped and still can’t explain the product. Would you stress-test it?”
- Provides a three-question checklist for deciding whether a side hustle idea is worth starting, delivered as a short paid PDF.“I built a tool to help people validate ideas faster. Used it on itself. Got 0 replies in 7 days.”
- Estimates a startup's value using data from past acquisitions listed on Acquire.com.“Lets see what your startup is worth”
- Displays companies and startups as buildings in a 3D virtual city organized into industry districts for exploring products.“I’m building a virtual Silicon Valley for discovering and launching new products.”
- TrendGap — Identifies market gaps from trending topics to suggest product opportunities.“I have made for 3 month 800 dollar with my vibe-coded platform - but now I need strategy for distribution”
- iwouldpay.dev — Lets visitors swipe through startup cards to signal whether they would pay, and shows makers the share of paying votes on their listing.“iwouldpay.dev - swipe on indie startups, right if you'd pay, left if not”
- SubmitMyStartup — Lists places where founders can submit their startup or side project, and publishes results of test submissions.“SubmitMyStartup - Free public directory of places to share your startup”
- ShipClash — Lets users pick which of two startups they think will succeed and compares their picks with the crowd's.“I built ShipClash - Ship or Dump for products if you think and see if audience agrees.”
- Revencast — Generates a multi-section market validation report with competitor analysis, revenue simulations, and execution roadmaps from a startup idea.“I built a tool that helps founders validate their ideas (Giving away 2 free runs)”
- real or fake? — Quizzes players to tell real startups from made-up ones within 60 seconds and reveals each real company's monthly revenue.“A game where you guess which startups are real and see how much they make”
- IdeaExam — Analyzes a described SaaS idea for market demand, competition, monetization and risk, then scores it and suggests a validation plan.“We built a tool that analyzes the market and validates your SaaS idea before you build it”
- StartupSprints — Generates a short list of customer-finding actions for a startup, each with a reason and success signal, and adjusts future plans from logged results.“I built a tool that suggests a startup's next customer-finding action. Is the onboarding too much?”
- The Capital — Runs a weekly competition where founders enter their AI startups and compete for votes and podium spots.“I started an AI startup competition. Last week 95 founders entered.”
Most discussed
- Déjà View — Researches a described startup idea and reports past companies that tried it, when they operated, when they shut down, and which survived.“I built a tool that tells you who already tried your startup idea, and how they died”
- blunlock — Generates a landing page for a product idea, hosts it automatically, and collects emails to gauge how many visitors would pay.“i got lucky with 872 users i guess”
- killmyidea — Scores a user's project idea across about ten questions and classifications using a non-generative model, run in parallel.“I built a side project to test TypeSafe's Jev model with no generative LLM that scores your project idea”
- Collects and shares small profitable micro SaaS startup ideas on a website with paid featured listings.“It took me 148 days to earn my first dollar online”
- No One Wants Your App — Reviews a founder's product evidence and challenges their assumptions to recommend one decision and one next test.“No one wants your app. Let's find out if that's actually true before you spend more.”
- awesome-submitlist — Lists over 300 directories, launch sites, newsletters and communities where startups can submit their products, with domain rating, traffic and pricing details.“300+ directories, launch sites, newsletters, communities, subreddits and marketplaces to submit your startup, with Domain Rating, traffic and pricing”
- Kortex NotebookLM — Provides a curated list of online startup directories that require no login or signup, with a spreadsheet for tracking submissions.“It's my time to give back to community ($200K in 6 months)”
- StartupGraph — Turns founders' startup descriptions into custom word clouds and word games listed in a startup directory.“Drop your startup + 10 words that describe it. I’ll turn them into something.”
- Gives founders a daily dashboard of items to watch, such as competitors, customer conversations, opportunities and content ideas.“What do you actually want from a founder dashboard?”
- marketing-for-Founders — Collects curated marketing guides, templates, examples and tools for founders into a GitHub repository organized as a playbook.“No Audience, No Budget? This github repo will help you get your first users”