The Reseller OS: A $300K MRR Back Office for Depop Sellers
The U.S. secondhand market hits $78.8B by 2030. Thousands of Gen Z sellers run real businesses out of consumer apps — and the back office doesn't exist yet.
Automation-Ready SaaS
Software and AI-powered startup ideas that automate workflows or replace manual tasks. High-margin, scalable models built for solopreneurs and developers who want recurring revenue from digital tools, APIs, or lightweight SaaS products.
The Film Lab OS: Vertical SaaS Hiding Inside the Analog Revival
Film processing labs run on paper forms, Instagram DMs, and spreadsheets. One founder can fix that with a vertical SaaS stack — and own the payment layer too.
ADA Evidence SaaS for Agencies ($7K–$30K MRR, Solo-Buildable)
Web accessibility lawsuits topped 5,000 in 2025, and state cure-period laws are shifting the job from "avoid litigation" to "document the fix." No one built the response workflow for SMBs.
The Comment-to-Offer Tool: Micro-SaaS for the Monetization Gap
Creators on Substack, Patreon, and TikTok sit on thousands of product requests they never act on. The missing layer is upstream of every storefront — and it's wide open.
The Hyperlocal Offer Engine: POS-Agnostic, $149–$399/Month
Local SMBs lose revenue every slow Tuesday afternoon. A POS-agnostic offer engine that reads sales, weather, and daypart signals can turn dead hours into same-day campaigns automatically.
Immigrant Fintech's Missing Layer ($99–$299/Month, No Bank Required)
MoneyGram Ramps opened the rails. Nineteen million underbanked U.S. households are already at the counter. The software layer connecting them to local merchants doesn't exist yet.
ChatGPT's Context Hints: $15K MRR Inside the New Ad Primitive
OpenAI's self-serve ChatGPT Ads Manager launched May 5, 2026 with CPC bidding and a new targeting primitive — context hints — that most advertisers don't know how to write yet.
A Searchable Archive of Ugly Nostalgia for Creative Teams ($79/Month)
Brands want awkward flash photos, not polished retro — but real early-2000s visuals aren't commercially licensable. A rights-cleared ugly nostalgia library fills a gap Getty and Shutterstock won't. ---
Reorder Radar: The $99 Shopify App for the 53% Stockout Problem
Shopify's GraphQL migration opened a gap in the $49–$99 micro-brand tier. 53% of Shopify products stock out, and the credible incumbent just priced itself out of the space.
Agency Pulse: $79K ARR on the iPhone Homescreen
Apple's widget layer is underbuilt for professionals. The play is profession-specific iPhone dashboards that pull from tools operators already pay for — starting with agency owners.
Municipal Zoning Intelligence ($50K MRR)
Cities publish zoning and permit rules, but the data is buried in PDFs, GIS maps, and outdated portals. A structured API turns that mess into machine-readable feasibility answers for proptech, lenders, and AI agents.
The Needlepoint Slogan Factory ($13K MRR, 172% Search Growth)
Needlepoint searches are up 172% year-over-year. The average stitcher dropped 30 years younger. No one has built a phrase-to-chart tool for the new buyer.
Receipts Mode: The $79K ARR Media-Literacy Kit for TikTok Teachers
57% of U.S. teens get news from TikTok daily. Teachers have no modern toolkit. Receipts Mode turns creator clips into structured classroom worksheets — and $79K ARR is the floor.
The $50K MRR Dental Note Layer
AI dental scribes are going upmarket. The 178,000 independent practices using Dentrix, Eaglesoft, and Open Dental are the open lane — and a $499/month documentation layer is the wedge.
The Regulars Engine: $149/Month to Own Local Repeat Commerce
Regular customers drive 6x more revenue for local merchants — and no one has built the AI layer that lets them just say "usual." Here's the wedge.
The $99 Creator Bounty: UGC on Demand for Ecommerce Brands
Small ecommerce brands need short-form product videos but enterprise UGC platforms are overkill. A niche bounty board — kitchen gadgets, pet products, TikTok Shop — fills the gap.
The Empty Chair Copilot: $44K MRR in Missed Salon Appointments
Hair salons lose $2,500–$5,000 a month to no-shows and late cancellations. Booking platforms log the damage. No one texts the owner before the slot disappears.
The Retreat Host Back Office ($30K MRR Hiding Inside BookTok)
Reading retreats are a $749–$3,000-per-ticket business with no dedicated back-office software. Rooming, dietary tracking, waivers, and guest logistics still run on seven-tab spreadsheets.
The Senior-First App Studio: $1.5M ARR Hiding in the 80+ Cohort
The oldest boomers crossed eighty in January 2026. Ninety percent own smartphones. Most apps still ignore them — and the 59 million adult children managing their lives.
The Kitchen Emergency Brake: $118K MRR Hiding in Restaurant Chaos
Independent restaurants stack DoorDash, Uber Eats, Grubhub, and first-party ordering — then lose control of the kitchen. The gap is a vertical SaaS play for off-premise demand management.
Government Contract Discovery for Small Web and IT Agencies
Local governments issue 500,000+ RFPs a year, but small agencies never see them. A niche micro-SaaS for sub-$50K municipal digital contracts — website redesigns, records digitization, ADA remediation — sits wide open.
Pre-Market Retail Intel for Tenant Reps ($799/Month)
U.S. retail vacancy sits at 4.8% while 7,900 stores are closing in 2026. The best boxes are gone before they're listed. Here's the gap no one has filled.
The OTC Reformulation Radar: $35K MRR Selling the Signal
A small biotech just filed a patent on a caffeine-free Excedrin alternative — pointing at a broader gap: OTC categories worth billions, built on decades-old formulations.
The Field Manual Copilot: $79K MRR Underneath ServiceTitan
ServiceTitan owns large contractors. XOi owns enterprise field intelligence. Small plumbing, HVAC, and boiler shops — 60,000+ under five employees — have nothing built for them. ---