Discover underserved categories, rising products, pricing gaps, customer complaints, and emerging opportunities across the world's software marketplaces — before you write the first line of code.
Shopify · Operations · Analytics
BuildOn Marketplaces turns scattered marketplace listings, categories, pricing, reviews, developers, and historical signals into something more useful: a reason to build — or not build.
See categories where customer demand appears stronger than the available product supply.
Compare competitors, pricing, customer complaints, ratings, positioning, and ecosystem rules before committing months of work.
Track launches, pricing shifts, category movement, review velocity, and emerging products over time — not just a static snapshot.
The long-term product behaves less like a directory and more like a research analyst that understands software ecosystems.
Strong complaint density + viable pricing + moderate specialist competition.
Fragmented tooling and repeated workflow complaints across merchant reviews.
Clear merchant pain with relatively narrow direct positioning.
Potential operational gap for multi-store merchants and agency operators.
The defensible product is the normalized marketplace graph underneath the interface — with a historical layer that shows how ecosystems change.
Categories, listing requirements, platform fees, distribution mechanics, ecosystem rules, APIs, and approval constraints.
Products, developers, pricing models, positioning, integrations, ratings, reviews, categories, and cross-marketplace relationships.
First seen, pricing changes, review velocity, ranking movement, category migration, launches, removals, and momentum over time.
Competitive density, unmet needs, complaint clusters, pricing gaps, category momentum, build difficulty, and ranked market opportunities.
Founders are the wedge. The same normalized dataset can later support agencies, SaaS teams, investors, and marketplace operators.
Discover practical product gaps that fit your team size, budget, and timeline.
Compare adjacent ecosystems, categories, competitors, pricing, and product whitespace.
Use marketplace intelligence to identify ecosystem needs and product/service opportunities.
Watch category movement, product velocity, developer growth, and emerging ecosystem winners.
If you are putting a card on file, you should know exactly what happens next. Interest decides the order, the community shapes the data, and beta is when billing starts.
350 seats at US$69/month, card on file, nothing charged. The marketplaces you tick decide what we build first. Reserve by September 30, 2026 to be considered for the Founding Thirty.
Thirty founding members, chosen for spread across roles and marketplaces and for what they want to research first. Access from October, a seat in the working group, a marketplace they asked for in the first wave.
A private space for every founding member: which marketplace first, what you tried to research and could not, and a build update from us every week.
The first marketplaces live with historical tracking running. Your access is activated and billing starts at the founding rate. Cancel any time.
Opens to everyone at US$149/month. Founding members keep US$69 for as long as they stay subscribed.
If beta has not opened by December 31, 2026, every reservation is released automatically and no card is charged.
Same price as every founding seat. The difference is access and influence: the thirty get in a month early and decide, with us, what gets tracked first.
The working dataset as it is built, a weekly build call with us, and a marketplace they asked for in the first ingestion wave.
A mix of indie builders, agencies, SaaS teams and investors across different marketplaces, chosen on how specific the answer to “what would you research first?” is. A card on file is required to be eligible.
Selections go out on October 1, 2026 by email. If fewer than thirty answers are strong enough, we select fewer and say so.
We're opening early access to the first group of builders who want to use marketplace intelligence before deciding what to build. Founding members help determine which ecosystems and signals we prioritize first.
Original reports, category pages, market comparisons, and opportunity studies can become the SEO/AEO engine that attracts builders organically.
A future data report comparing category saturation, pricing, customer complaints, and product velocity across major ecosystems.
Opportunity-led category analysis built from marketplace signals.
Turning review language into product ideas founders can investigate.
The ones founding members tick when they reserve. We publish the interest tally in the founding community and start with the top choices, subject to each marketplace’s terms for automated collection, which is why marketplaces with public APIs are likely to come first.
The goal is to normalize multiple ecosystems and add history, comparative signals, review intelligence, and opportunity ranking that are difficult to reconstruct manually.
No charge today. Reserving asks for a card on file through Stripe; nothing is billed until your beta access is activated in November 2026, and you can cancel before then. If beta has not opened by December 31, 2026, every reservation is released automatically and no one is charged.
You get a confirmation with your founding seat number and an invite to the founding community. In October we publish the interest tally and start tracking the marketplaces founding members chose. In November 2026 your beta access is activated, billing begins at the founding rate, and you keep that rate for as long as you stay subscribed.
Thirty of the first 350 founding members, selected on October 1, 2026 for spread across roles and marketplaces and for how specific their research goal is. They get access in October, a month before beta, a seat in the weekly working group, and a marketplace they asked for in the first ingestion wave. Same price as every founding seat; a card on file is required to be considered. Tick the box on the reservation form before September 30, 2026.
Yes, any time, from the link in your confirmation email or by replying to it. Before beta nothing has been charged; after beta you keep access to the end of the month you paid for.
No affiliation or endorsement is implied. Marketplace names are used to describe the ecosystems the product intends to analyze.
Join the founding list for buildonmarketplaces.com and help shape the marketplace intelligence founders actually need.