Skip to content
Developer toolsNew techTop 9% of today's analysed ideas

Paid Spotlight replacement for power users

Package a polished, paid macOS utility built on the fsearch approach: instant fuzzy, typo-tolerant, content-indexed file search with a native UI, Spotlight-replacement positioning, and power-user features like regex, saved searches, and Alfred/Raycast integration. Target developers, designers, and power users frustrated with Spotlight's slow or inaccurate indexing.

Original post

What to build

A native macOS menu-bar app that packages fsearch's Rust indexing engine into a polished, paid Spotlight-replacement for developers and power users: instant fuzzy/typo-tolerant filename search plus indexed full-text content grep, with regex search, saved searches, and Alfred/Raycast extensions.

fsearch proves ~1 ms query latency over an 8M-file index is achievable on macOS with fuzzy matching and content grep; wrapping that engine in a native UI with power-user features turns a raw open-source benchmark into a sellable Spotlight alternative.

Demand

Developers, designers, and power users who already pay for Alfred, Raycast, or HoudahSpot to work around Spotlight's slow and inaccurate indexing are the natural buyers, and fsearch's rapid GitHub traction signals fresh interest in this exact problem.

  • GitHub trending — noahdunnagan/fsearchMarket

    1211 stars, written in Rust; high engagement at the source for a whole-disk macOS file search tool claiming ~1 ms query latency over 8M files.

  • Opportunity briefMarket

    Analyst-identified opportunity to productize fsearch's indexing approach into a paid native macOS app with Spotlight-replacement positioning and power-user integrations (regex, saved searches, Alfred/Raycast).

  • Adjacent paid productivity toolsMarket

    Alfred's Powerpack and Raycast Pro both monetize macOS search/launcher workflows, showing an established base of users willing to pay for faster local search and productivity tooling.

Stack

  • fsearch (Rust indexing core)
  • Swift / SwiftUI
  • FSEvents API
  • Full Disk Access / macOS sandboxing entitlements
  • Sparkle (auto-update)
  • Alfred Workflow & Raycast Extension APIs

Solo + AI difficulty

The hard part — a fast fuzzy/content-indexed search core — already exists as open source, so a solo builder mainly needs to wrap it in a native SwiftUI menu-bar UI, handle Full Disk Access permission prompts gracefully, and package/notarize the app; a basic sellable MVP (core search UI plus saved searches) is realistic in roughly 3-5 weeks with AI-assisted coding, with Alfred/Raycast integrations as a fast follow.

Entry threshold
Low barrier: the hard indexing/search engine already exists as open source, so a solo builder mainly needs to wrap it in a native macOS app with UI polish, licensing, and distribution; buildable in 2-4 weeks with AI assistance.
Window
3-6 months

Where to find first users

  • Product Hunt launch
  • Show HN on Hacker News
  • r/macapps and r/MacOS
  • Alfred workflow gallery and Raycast extension store

Competitors

Counter-signals & risks

  • Apple's Spotlight and Finder could improve indexing speed and fuzzy/typo tolerance in future macOS releases, eroding the differentiation a third-party tool offers.

  • Existing established tools (Alfred, Raycast, HoudahSpot, EasyFind, mdfind-based utilities) already serve power-user file search needs, raising competitive and user-acquisition risk.

  • Full-disk content indexing on macOS requires broad filesystem access permissions, which may face user trust friction or App Store sandboxing restrictions if distributed commercially.

  • No historical market match was found for this opportunity, indicating limited validated demand signal beyond the technical repository itself.

Original title: noahdunnagan/fsearch: Whole-disk file search for macOS: fuzzy names, typo tolerance, indexed content grep. ~1 ms over 8M files.

  • Developer tools#1

    Niche file converters monetized via mass programmatic SEO

    Build a narrow, high search-intent file converter or utility (e.g. a specific format conversion niche like PNG to SVG, with vector output options for Cricut, laser cutters, CNC and embroidery machines) and scale it purely through programmatic SEO: hundreds of landing pages for each conversion pair and long-tail blog content in multiple languages. The proven playbook is one utility, one dominant acquisition channel (SEO), and deep format coverage rather than a broad feature set.

    Demand
    7/10
    est.
    Buildability
    8/10
    est.
    Competition
    5/10
    est.
    via Reddit
    44 competitors
  • Developer tools#2

    Scope-creep auditor for AI coding agent diffs

    Build a diff-auditing tool for AI coding agents that flags everything an agent changed beyond the requested fix - unrelated file edits, deleted comments, altered formatting, touched dependencies, or scope creep. Ship it as a CLI, GitHub Action, or VS Code extension targeting developers using Claude Code, Cursor, Copilot, and similar agents who need a quick sanity check before merging agent-generated diffs.

    Demand
    3/10
    measured
    Buildability
    8/10
    est.
    Competition
    10/10
    est.
    via Hacker News
    0No named competitors
  • Developer tools#3

    CI gate that blocks PRs on regressed AI agent traces

    Build a lightweight hosted or self-hosted add-on for AI agent CI pipelines that grades production LLM traces, clusters recurring failure modes, and auto-generates regression tests from frozen failure traces, then blocks merges when a PR reintroduces a known failure. Target solo devs and small teams shipping LLM agents who need a cheap drop-in CI gate instead of building eval infrastructure themselves.

    Demand
    8/10
    measured
    Buildability
    6/10
    est.
    Competition
    6/10
    est.
    via GitHub
    33 competitors
Paid Spotlight replacement for power users — Nichr