Ideas for builders

102 small software businesses you could launch in weeks, each with one buyer and a price.

What you bring

Kind of business

All 102 ideas

Agency$199
A pre-launch check for apps built with AI tools, with a list of fixes
Why it could work
People who build an app with AI tools want someone to check it before strangers use it.
Skills you can bring
Experience as a software engineer or security tester
Reports$39
A job-offer review for engineers, covering the employer, fair pay and how to negotiate
Why it could work
Engineers holding an offer have a deadline and money at stake, and most of the research is public.
Skills you can bring
Years of hiring or recruiting engineers
Software$49–$199/mo per repo
Automatic fixes for software teams when an API they use changes
Why it could work
Teams put off upgrades, and AI can read the changelog and write the fix for a person to review.
Skills you can bring
Deep knowledge of one widely used API
Agency$299 per fix
Fixes for broken apps built with AI tools, with a plain account of what went wrong
Why it could work
Founders who built an app with AI tools often can't debug it, and they need it working today.
Skills you can bring
Fast debugging in many languages and frameworks
Software$29–$99/mo
A service that lets AI agents search current building permits, gathered from city records
Why it could work
Teams building agents need current data, and public records are messy enough that they'll pay for a clean copy.
Skills you can bring
Data engineering experience with public records
Reports$299
A report for software companies on whether an AI agent can sign up, use their API and pay
Why it could work
Buyers now send AI agents to try products, and most sign-up pages were built only for people.
Skills you can bring
Experience designing APIs and testing sign-up flows
Software$199/mo
An AI phone agent that answers plumbers' evening calls and books the job
Why it could work
A missed evening call is a lost job for a plumber, and AI voice agents can now take a booking reliably.
Skills you can bring
Experience building with voice and calendar APIs
Reports$79
A severance review for laid-off tech workers, with what's usual and a script to ask for more
Why it could work
People offered severance have a short deadline to sign, and most have never negotiated one.
Skills you can bring
Management or HR experience at a tech company
Software$99–$499/mo
Security scores for the connectors teams add to their AI agents, with a paid report per team
Why it could work
Teams connecting AI agents to their systems want to know which connectors are safe to install.
Skills you can bring
Security expertise and contacts who choose tools at companies
Reports$299
A cloud bill review for startups spending under $20,000 a month, listing the five biggest savings
Why it could work
Small teams rarely have anyone watching the cloud bill, and the biggest savings are often a few settings.
Skills you can bring
Hands-on cloud operations experience
Agency$399
A check that runs every code sample in a developer tool's docs and fixes the broken ones
Why it could work
Broken code samples cost developer tools sign-ups, and AI can run every sample against the latest release.
Skills you can bring
Experience writing developer documentation
Trading$149/mo
A monthly report on how AI assistants describe one developer tool and which rivals they suggest
Why it could work
Developers now ask AI assistants which tool to use, and companies can't see those answers on their own.
Skills you can bring
Developer marketing experience
Agency$299
A launch kit for a new developer tool, with the launch post, a demo clip and a FAQ
Why it could work
Builders finish the product and then stall on the launch, and a launch gets only one first day.
Skills you can bring
Experience launching developer products
Software$49/mo
Alerts for teams running AI agents when a run loops or goes over its budget
Why it could work
Teams running AI agents get surprise bills from runs that loop, and a simple watcher catches most of them.
Skills you can bring
Experience running AI agents in production
Software$9/mo
Monitoring for small teams' scheduled jobs, with an alert when a job fails to run
Why it could work
A scheduled job that silently stops is often found weeks later, and a missed-run alert is cheap to provide.
Skills you can bring
Operations experience and taste for small developer tools
Software$15 per seat/mo
A shared viewer for coding-agent sessions, so a team can watch, comment on and take over a run
Why it could work
Coding agents run in one person's terminal, and teams want to review and steer that work together.
Skills you can bring
Building developer tools and leading a team that uses agents
Software$20/mo per tool
Private hosting for the small internal tools teams now build with AI, for up to ten people
Why it could work
People can now build a small tool for their team in an afternoon, then have nowhere safe to share it.
Skills you can bring
Infrastructure experience and a feel for what non-engineers need
Agency$149
Résumé rewrites for senior engineers, written from their own pull requests and design docs
Why it could work
Senior engineers undersell their work, and the record of what they shipped is already written down.
Skills you can bring
Years of hiring engineers
Digital$99
Take-home tests and grading guides for small companies hiring a backend engineer
Why it could work
Small companies hire rarely and lack a fair, tested assignment, and a good grading guide saves hours per hire.
Skills you can bring
Experience interviewing many engineers
Digital$29 per session
System-design interview practice for engineers, with an AI interviewer and a written debrief
Why it could work
Candidates want realistic practice on their own schedule, and a written debrief shows what to fix.
Skills you can bring
Having run many system-design interviews
Software$49/mo
Weekly release notes for small software companies, written from the code changes they merged
Why it could work
Customers want to see progress, and engineers rarely have time to describe it in plain words.
Skills you can bring
Experience writing for software customers
Software$99/mo
A support agent for small software companies that answers from the docs and hands off hard cases
Why it could work
Founders answer the same questions every day, and most of the answers are already in their docs.
Skills you can bring
Experience running customer support for a software product
Software$49–$199/mo
An API that reads freight invoice PDFs and returns clean data for logistics companies
Why it could work
Back offices still retype documents by hand, and one document type can be read very accurately.
Skills you can bring
Knowing one industry's paperwork and building data pipelines
Reports$149
A report for software teams on which of their open-source packages are abandoned or risky
Why it could work
Teams depend on hundreds of packages and can't tell which ones will cause the next outage or breach.
Skills you can bring
Years maintaining large codebases
Reports$249
An open-source license report on a startup's code before a funding round or sale
Why it could work
Investors and buyers ask about licenses late in a deal, and founders need the answer within days.
Skills you can bring
Knowledge of open-source licenses and careful writing
Trading$29/mo
A daily email of the security advisories that affect a company's own software packages
Why it could work
General security feeds are noisy, and teams care only about the packages they actually run.
Skills you can bring
Security operations experience
Trading$19/mo
A weekly email of breaking changes in the libraries a team uses, with upgrade notes
Why it could work
Upgrades cost less when teams see them coming, and changelogs are scattered across many sites.
Skills you can bring
Years of work in one programming language's ecosystem
Trading$19/mo
A daily list of AI model prices, limits and shutdown dates, readable from code
Why it could work
Teams choose AI models on price and limits that change often, and they want one current list.
Skills you can bring
Experience building with many AI model providers
Software$49/mo
Tests that run a team's AI prompts on each new model and show what changed
Why it could work
A model update can quietly change a product's answers, and teams want to see the difference before users do.
Skills you can bring
Experience shipping AI features
Digital$299
Labeled sample invoices for teams testing which AI model reads them best
Why it could work
Teams need realistic test data to compare AI models, and labeling a set takes days they don't have.
Skills you can bring
Knowing one task's edge cases and labeling data carefully
Software$29/mo
Issue sorting for open-source maintainers, with duplicates flagged and a weekly summary
Why it could work
Maintainers get more issues than they can read, and AI can sort them for a person to confirm.
Skills you can bring
Experience maintaining an open-source project
Software$29/mo per repo
Code review comments for small teams that catch one framework's common mistakes
Why it could work
Small teams often lack a senior reviewer for their stack, and each framework's common mistakes are well known.
Skills you can bring
Senior experience in one framework
Software$49/mo
A bot that finds old feature flags in a team's code and opens pull requests to remove them
Why it could work
Old flags pile up into risky dead code, and removing them is tedious work nobody schedules.
Skills you can bring
Experience working in large codebases
Reports$49/mo
A weekly report on a team's flaky tests, with the worst ones and their likely causes
Why it could work
Flaky tests waste hours of reruns each week, and the evidence already sits in the build logs.
Skills you can bring
Experience owning a team's build and test pipeline
Software$49/mo
Incident reports drafted from a team's chat and alerts, ready to review the next morning
Why it could work
Teams skip incident reports after a long night, and the timeline is already in the chat and alerts.
Skills you can bring
Experience running incidents and writing reviews of them
Software$29/mo
Morning handoff notes for on-call engineers, written from the night's alerts and fixes
Why it could work
Handoffs lose context across time zones, and a short written summary saves the next engineer an hour.
Skills you can bring
Years on call for production systems
Software$5 per user/mo
A chat bot that writes each engineer's daily standup from yesterday's commits and tickets
Why it could work
Engineers dislike writing status updates, and most of what they'd say is already in their tools.
Skills you can bring
Experience leading engineering teams
Software$199/mo
Client libraries in three languages for API companies, built from their API spec and kept current
Why it could work
API companies need client libraries but can't staff them, and an accurate spec does most of the work.
Skills you can bring
Writing libraries in several programming languages
Software$15/mo
A tool that records, replays and compares webhooks for developers debugging them
Why it could work
Debugging webhooks means waiting for real events, and replaying a saved one skips the wait.
Skills you can bring
Experience building integrations between software systems
Software$9/mo
A status page with uptime checks for one-person software companies, set up in a minute
Why it could work
Solo founders need to look reliable, and a status page answers customers before they write in.
Skills you can bring
Experience building small, reliable web services
Software$19/mo for 10,000 checks
An API that checks email addresses and phone numbers on sign-up forms, priced per thousand checks
Why it could work
Fake and mistyped sign-ups waste money on email and support, and a check at the form stops them.
Skills you can bring
Building APIs and understanding email delivery
Software$19–$79/mo
An API that turns web pages into screenshots and PDFs for developers, with caching
Why it could work
Rendering web pages reliably is fiddly work that most teams would rather pay for than run.
Skills you can bring
Experience running headless browsers at scale
Software$49/mo
An AI agent that asks a software company's cancelling customers why they left and sorts the answers
Why it could work
Founders rarely learn why customers leave, and a short personal email gets more replies than a form.
Skills you can bring
Experience in customer research or customer success
Software$49/mo
A weekly summary of a small software team's customer feedback, grouped by theme
Why it could work
Small teams hear from customers in support, reviews and sales calls, and lose the pattern across them.
Skills you can bring
Product management experience
Trading$29/mo
App store review alerts for indie developers, sorted into bugs, feature requests and praise
Why it could work
Reviews reveal bugs before support tickets do, and indie developers rarely read every one.
Skills you can bring
Experience shipping mobile apps
Reports$19/mo
A weekly revenue email for small software companies, with recurring revenue, churn and cohorts
Why it could work
Founders check revenue across a dozen tabs, and one Monday email answers how the business is doing.
Skills you can bring
Knowing subscription metrics and building data pipelines
Agency$799
A usage and revenue dashboard for a small software company, built on its own database in a week
Why it could work
Founders want usage and revenue in one place, and a focused one-week build beats a month of setup.
Skills you can bring
SQL and data modeling experience
Agency$999
A written guide to an old codebase for its new owner, covering what runs and what's risky
Why it could work
New owners and new hires lose weeks learning old code, and AI can read every file quickly.
Skills you can bring
Years working in old codebases
Agency$1,500
A fixed-price upgrade of one app to its framework's next major version, as a reviewed pull request
Why it could work
Major upgrades sit in backlogs for years, and a fixed price for a known upgrade is easy to approve.
Skills you can bring
Deep knowledge of one framework's upgrade path
Agency$99/mo
Monthly upkeep for apps built with AI tools, covering updates, backups and small fixes
Why it could work
People who built an app without coding can't maintain it, and they'd rather pay than learn.
Skills you can bring
Broad web development experience
Agency$499
An accessibility review of a web app's main pages, with the fixes delivered as code changes
Why it could work
Teams want accessible products but lack the expertise, and fixes in code are worth more than a list.
Skills you can bring
Accessibility knowledge and front-end engineering
Agency$199 per language
Translation of a small app into five languages, delivered as files ready to merge
Why it could work
Small apps miss sales abroad because translation looks like a big project, but the work is well defined.
Skills you can bring
Experience adapting software for other languages
Agency$999
An API reference and quickstart guide for a developer tool company
Why it could work
Docs decide whether developers adopt a tool, and the engineers building it rarely have time to write them.
Skills you can bring
Technical writing experience
Agency$499
Docs set up so AI coding agents can read them, for developer tool companies
Why it could work
More developers now learn a tool through their AI agent, and agents work best from clean, structured docs.
Skills you can bring
Experience with documentation tools and how AI agents read sources
Agency$499/mo
One tested how-to page a week for a developer tool, written to be found in search
Why it could work
Developers search for how to do one thing, and a page that answers it brings sign-ups for years.
Skills you can bring
Experience writing for developers
Reports$149
A written review of a developer tool's landing page, with its headline and first section rewritten
Why it could work
Builders write landing pages for themselves, and an outside reader sees where visitors lose interest.
Skills you can bring
Experience marketing to developers
Reports$249
A pricing review for a small software company, with three options to try and how to test them
Why it could work
Most small software founders set a price once and never revisit it, though price changes move revenue fast.
Skills you can bring
Experience setting software prices
Reports$199
A review of a rival developer tool's pricing, docs and sign-up, showing where to beat it
Why it could work
Teams need to know where a rival is weak, and its public pages, docs and sign-up show most of it.
Skills you can bring
Product strategy experience
Agency$399
Onboarding emails for a small software company's new users, written and tested on real sign-ups
Why it could work
Most trial users never reach the feature that would keep them, and a few well-timed emails help.
Skills you can bring
Lifecycle email marketing experience
Media$249
A 60-second demo video for a developer tool, cut from a screen recording, with captions
Why it could work
A short demo shows a tool faster than any page, and most builders never make one.
Skills you can bring
Video editing experience
Media$499
Narrated video tours of a startup's codebase for onboarding new engineers
Why it could work
New hires lose weeks learning a codebase, and a recorded tour costs less than a senior engineer's time.
Skills you can bring
Explaining software architecture clearly
Media$8/mo
A paid weekly newsletter for engineers on one stack's changes, with upgrade notes and code
Why it could work
Engineers in one ecosystem want a single trusted summary, and they pay for the time it saves.
Skills you can bring
Years in one ecosystem and a voice engineers like reading
Media$10/mo
A weekly newsletter for working engineers on new AI research and what it changes in practice
Why it could work
Engineers can't read every paper, and they value someone turning research into practical decisions.
Skills you can bring
Reading research and building with AI models in production
Media$5/mo
A weekly newsletter on new open-source tools in one field, each one installed and tried
Why it could work
New tools appear every day, and engineers trust a reviewer who has actually run them.
Skills you can bring
Curiosity about tools and an honest reviewing voice
Media$199
A course for engineers on doing real work with coding agents, built around three working projects
Why it could work
Many engineers want to work well with coding agents, and real codebases teach more than tips do.
Skills you can bring
Shipping production work with coding agents
Digital$39
Instruction packs that help coding agents write better code in one framework
Why it could work
Coding agents write better code with good project rules, and few teams have time to write and test them.
Skills you can bring
Expertise in one framework and experience setting up agents
Digital$149
A starter kit for building a booking app, with sign-in and payments already set up
Why it could work
Builders want to skip the same setup each time, and a kit for one kind of app saves more of it.
Skills you can bring
Experience building production web apps
Digital$29–$79
Ready-made automation templates that handle new-client onboarding for small agencies
Why it could work
Small teams know what they want automated but not how to set it up, and a working template is enough.
Skills you can bring
Building automations and knowing one industry's routine work
Digital$79
Interface templates in React for engineers building internal admin tools
Why it could work
Engineers can build screens but struggle to make them look polished, and templates close that gap.
Skills you can bring
Interface design taste and front-end engineering
Digital$149
App store screenshots and listing text for indie iPhone apps, in every required size
Why it could work
The store listing decides downloads, and indie developers rarely design it well.
Skills you can bring
Visual design and writing short, persuasive copy
Digital$39
Templates for new engineering managers, covering one-on-ones, reviews, hiring and planning
Why it could work
New managers start without a playbook, and good templates prevent common early mistakes.
Skills you can bring
Years of managing engineers
Digital$199
Security policies for a startup's first security audit, written to match its own systems
Why it could work
A first audit asks for a stack of policies, and founders would rather edit a draft than start from nothing.
Skills you can bring
Compliance experience and plain, exact writing
Agency$499 plus $99/mo
Evidence gathering for a startup's first security audit, with screenshots, settings and a checklist
Why it could work
Audits stall while teams collect proof from many tools, and much of it can be gathered on a schedule.
Skills you can bring
Experience preparing companies for security audits
Trading$99/mo
A weekly summary of regulation changes for small fintech companies, with what each one requires
Why it could work
Small fintech companies can't staff a compliance team, and they need to know what changed and what to do.
Skills you can bring
Fintech or compliance experience
Trading$49/mo
A weekly list of public software contracts for small development shops, filtered by size and skills
Why it could work
Governments post contracts in many places, and small shops miss the ones they could win.
Skills you can bring
Experience selling to public agencies
Trading$99/mo
A weekly list of new commercial building permits in one city, for contractors who bid early
Why it could work
Contractors who hear about projects first win more bids, and permit data is public but hard to read.
Skills you can bring
Data engineering and knowing how contractors find work
Trading$49/mo
Alerts for product marketers when rival software companies change their pricing pages
Why it could work
Rival price changes matter to sales and marketing, and checking rivals' pages by hand is easy to forget.
Skills you can bring
Product marketing experience
Trading$9/mo
Uptime and speed history for AI model services, with alerts for teams that depend on them
Why it could work
Teams building on AI models need to know when a provider is slow, and official status pages lag.
Skills you can bring
Experience building monitoring systems
Trading$9/mo
A daily list of remote jobs for Elixir engineers, each showing the salary
Why it could work
Engineers in a niche language waste time filtering general job boards, and salary is what they check first.
Skills you can bring
Belonging to one language's developer community
Software$99 per listing
A job board for one programming language, paid for by employers per listing
Why it could work
Employers hiring for a niche language want qualified candidates, and a focused board brings them.
Skills you can bring
A following in one programming language's community
Reports$29
Salary ranges for one tech role in one city, drawn from public job postings and updated monthly
Why it could work
Candidates and small employers both need a fair range, and many job postings now list salaries.
Skills you can bring
Comfort with data and knowing how tech roles are leveled
Reports$49
A 90-day budget for a laid-off engineer, covering savings, health insurance and severance
Why it could work
The first weeks after a layoff are stressful, and a clear plan turns worry into decisions.
Skills you can bring
Personal finance know-how and a calm, practical voice
Agency$199
A portfolio site for an engineer, built from their public work, with one project written up
Why it could work
Hiring managers look for proof of work, and most engineers never write up what they built.
Skills you can bring
Web design and turning technical work into a story
Agency$499
A shortlist of five candidates for a seed-stage startup hiring its first engineer
Why it could work
Founders hiring their first engineer don't know where to look, and a vetted shortlist saves weeks.
Skills you can bring
Recruiting experience and a wide network of engineers
Reports$999
A technical review of a small software business's code for someone about to buy it
Why it could work
Buyers of small software businesses can't read the code themselves, and hidden problems cost them later.
Skills you can bring
Reviewing codebases quickly and judging the cost of fixes
Trading$29/mo
A weekly list of small software businesses for sale, each with a quick risk score
Why it could work
Listings are scattered across many sites, and buyers want a short list with the warning signs noted.
Skills you can bring
Having bought or sold a small software business
Software$49/mo
A daily spreadsheet of auction results from a public site, for teams that need the data
Why it could work
Teams want the data but not the upkeep, and they'll pay for a feed that keeps working.
Skills you can bring
Building data pipelines and knowing who needs one dataset
Agency$499
Customer data cleanup and import for a small company moving to a new CRM
Why it could work
CRM moves stall on messy data, and a fixed-price cleanup is easy for a small company to approve.
Skills you can bring
Data work and patience with messy spreadsheets
Software$49/mo
An AI agent that answers rental listing questions and books viewings for small landlords
Why it could work
Landlords lose good tenants by replying late, and most questions repeat the same facts.
Skills you can bring
Building messaging agents and knowing small landlords
Software$199/mo
An AI agent that texts vet clinic clients about overdue vaccines and books the visit
Why it could work
Clinics lose visits when reminders lapse, and a text that books in one reply works better than a call.
Skills you can bring
Integration work and selling to small clinics
Software$19/mo
An AI agent that sends freelancers' clients polite, regular reminders about overdue invoices
Why it could work
Freelancers hate chasing payment, and polite, steady reminders get invoices paid sooner.
Skills you can bring
Freelancing experience and writing firm, friendly emails
Software$15/mo
An AI agent that matches freelancers' receipts to card charges each week and flags missing ones
Why it could work
Freelancers dread hunting for receipts at tax time, and weekly matching keeps the books ready.
Skills you can bring
Bookkeeping habits and careful data handling
Software$39/mo
Call notes for recruiters, written into each candidate's record as soon as the call ends
Why it could work
Recruiters spend hours typing notes, and AI can now turn a call into a structured summary right away.
Skills you can bring
Recruiting experience and building with voice transcription
Software$49/mo
Daily job-site reports for small contractors, made from the photos crews already take
Why it could work
Contractors need a record for clients and disputes, and phone photos already capture the work.
Skills you can bring
Knowing construction work and building simple mobile apps
Software$29/mo
A daily check-in call to an older parent, with a short summary texted to the family
Why it could work
Families who live far away worry between visits, and a friendly daily call with a summary eases that.
Skills you can bring
Building voice agents and writing warm call scripts
Software$9/mo
A browser extension that rewrites a job seeker's résumé for whichever job listing is open
Why it could work
Job seekers apply to many roles, and rewriting a résumé for each one by hand takes too long.
Skills you can bring
Building browser extensions and knowing what recruiters screen for
Software$5/mo
A code editor add-on that explains one framework's error messages in plain words for beginners
Why it could work
Cryptic errors stall beginners, and an explanation with the likely fix saves them an hour.
Skills you can bring
Deep framework knowledge and teaching beginners
Software$99 per team
A command-line tool that sets up a new engineer's laptop for their team's stack in one step
Why it could work
Setup eats a new hire's first days, and a tested script lets them do real work on day one.
Skills you can bring
Developer tooling work and scripting across operating systems
Software$29/mo
Architecture diagrams for software teams, drawn from their code and redrawn on each merge
Why it could work
Diagrams go out of date the week they're drawn, and generating them from code keeps them accurate.
Skills you can bring
System design and a clear visual sense
Agency$999
Five customer interviews for a startup, recruited, run and summarized around one product question
Why it could work
Founders know they should talk to customers but don't, and a done-for-you round gives answers fast.
Skills you can bring
Interviewing users and summarizing what they said
Media$199
Launch-week content for an indie product, including five posts, a demo clip and an email
Why it could work
Builders run out of steam after shipping, and steady posts during launch week keep attention.
Skills you can bring
Writing for builders online and knowing what gets shared
Media$500 per sponsor slot
A sponsored video channel where each episode builds one small app with coding agents
Why it could work
Engineers like watching real builds, and sponsors pay to reach an audience of builders.
Skills you can bring
Building on camera and explaining choices as you go