Where the Gaps Hide: A Field Guide to Finding Web Tools Nobody's Built Yet

Every indie maker has heard the advice: build for a niche. What almost nobody tells you is where those niches actually live. They're not on Product Hunt. They're not in your Twitter feed. They're in the messy, unglamorous corners of the internet where people complain about their day jobs.

The Complaint Economy Is Your Research Department

Start with Reddit — but not the subreddits developers hang out in. Go where the work happens. r/Plumbing, r/Teachers, r/nonprofit, r/InsuranceAgent. Read the threads where someone asks, "Is there anything that does X?" and the top reply is a workaround involving three spreadsheets and a prayer.

GitHub is the second goldmine. Look at issues on open-source tools that have been sitting open for two years. Every stale issue tagged "enhancement" is a signal that someone needs something the ecosystem hasn't bothered to deliver. Same goes for feature request boards on closed-source apps — if a SaaS forum has the same request pinned for 18 months, that's demand with a timestamp on it.

The Verticals Everyone Skips

The US trades are a masterclass in underserved software. HVAC contractors scheduling jobs through text threads. Landscapers invoicing from the cab of a truck. The big players chase agencies and tech companies because that's where the marketing budgets are — which leaves millions of small operators cobbling together tools that weren't designed for them.

Teachers are another overlooked crowd. Between grading, parent communication, and lesson planning, they're juggling five apps that don't talk to each other. Small nonprofits? They run on volunteers and a part-time bookkeeper, and enterprise donor management software priced for a hospital system doesn't help them.

How to Validate Before You Build (or Adopt)

Whether you're building a tool or hunting for one, the test is the same:

• Frequency check. Is this a daily pain or a once-a-quarter annoyance? Daily pain wins.
• Current workaround audit. If people are duct-taping spreadsheets, email, and a Whiteboard together, they'll pay for a real answer.
• Willingness-to-pay signal. Look for existing spend. Someone already paying $30/month for a half-fit tool is your easiest customer — or your easiest justification for switching.
• Reachability. Can you actually find these people? A niche with no gathering places is a niche you can't serve profitably.

Proof It Works

Plenty of tools you now take for granted started exactly this way. Jobber and Housecall Pro grew out of home-services chaos. HoneyBook went after freelancers who found enterprise CRMs absurd. Even Notion's early traction came from people whose needs fell between Evernote and Trello.

The pattern is consistent: find a group the mainstream tool market considers too small, listen longer than anyone else does, and build (or pick) the thing that finally fits. The gap was always there. Most people just never bothered to look down.