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DEV-TOOLS

Chrome New Tab Extensions

A beautiful, feature-packed new tab page for Chrome

The take: 4 complained · no good tool.
3 platforms · 4 mentions · ↑13 upvotes
Opportunity score 41/100 Solid
DEV-TOOLS sector avg: 58 -17 Top 100% (12 cards)
GapMine track record: 254 predictions proven avg 34d early →
TimingBased on trigger event count, event freshness (14d window), and growth forecast. Percentile against all active cards.
25(weak)
SeverityBased on pain intensity level, mentions (full-corpus percentile), and paid-evidence count (log scale).
41(weak)
FeasibilityBased on existing supply count (inverse percentile — less supply = higher feasibility), build difficulty, and source diversity.
75(strong)
21d old Top tier Demand + Supply + Trigger all present
How we calculated this 41/100
25×30% + 41×45% + 75×25% = 45 → × 1.00 freshness → × 1.00 gold = 41
Final score discounts: freshness drops ~50% per week (21d old), and grade weight reflects how many of the 3 signal types (demand/supply/trigger) we found.
Incubating

Coverage confidence

We searched 2 of 3 places where competitors live — transparent about what we covered and what we missed.

Confidence
65% (Medium)
Where we searched
2 / 3 · GitHub · App Store
Real competitors found
0 shipped products (AI-verified from 57 raw matches)
Last scan
today · auto-refreshed every month

Should you build this?

YES, if
  • You can ship in 1-2 weeks on $0-20/mo infrastructure
  • No direct competitors yet — first-mover window open
THINK TWICE
  • Pain level is LOW — users may not pay to fix this
  • No paid evidence AND no competitors — could mean "no market" rather than "open market"
VALIDATE THIS WEEK
  1. This weekend: DM 5 of the chrome_ext users who complained — ask if they'd pay $9/mo for a fix (no build yet)
  2. Next 7 days: ship a 2-page landing site with $9/mo waitlist + "request beta" form — count signups
  3. If <10 signups in 7 days: kill it · the demand isn't there at this price

Updated as new signals arrive

Gap fact panel

Pure SQL facts · 0 AI judgment · you decide why

📅 Earliest D signal: 2026-04-28
📊 Total D signals: 2
🌐 Unique sources: 1
⏱️ 30-day concentration: 100% · window may be opening
🔧 Tech-blocker keywords: none
⚡ Recent T signal: none

Top demand quotes:

"[Chrome Ext] iamshihab2020/tabdeck: A beautiful, feature-packed new tab page for Chrome." · chrome_ext · ↑13 · original →

"[Chrome Ext] tranthangit/NoteCute: A cute cork-board sticky note Chrome extension (Manifest V3) with drag & drop, 4 note types, bilingual EN/VI suppor" · chrome_ext · ↑12 · original →

Sign in to see the full opportunity

Who this is for · Why now · Willingness to pay · Full timeline · Competitor landscape · Build with AI prompt · Validation playbook · Evidence pool · 8+ more sections

Sign up free →

Who is this for

Frontend developers, 1-5 engineer teams, wasting 2-3 hours weekly organizing Chrome tabs across projects

Bloomberg-style buyer profile · grounded in real signals

Pain · LOW

"[Chrome Ext] iamshihab2020/tabdeck: A beautiful, feature-packed new tab page for Chrome." · chrome_ext · ↑13 · original →

"[Chrome Ext] tranthangit/NoteCute: A cute cork-board sticky note Chrome extension (Manifest V3) with drag & drop, 4 note types, bilingual EN/VI support, and Rive animations." · chrome_ext · ↑12 · original →

Full timeline · past → now → next

  • Now D1 4 active discussions
Past archive · No historical signals yet · we keep scanning

Future trend · next 7 days

Trend forecast becomes available once enough discussion history accumulates. Shown only when confidence >50%. New cards typically become predictable within 7-14 days after first sighting.

Competitor landscape 1

Grouped by source platform

Open source · on code platforms
github GENEXIS-AI/chromex: A Codex-powered Chrome side-panel assistant for page context, tabs, voice, and i Source ↗

Build this with AI

We've assembled a full brief from the real evidence above. Ready to paste into any AI coding tool.

Or open in your AI tool: Claude ↗ · ChatGPT ↗ · Gemini ↗ · Perplexity ↗
~ 1-2 weeks · $0-20/mo infra
Preview what we send
I want to build a tool for: Frontend developers, 1-5 engineer teams, wasting 2-3 hours weekly organizing Chrome tabs across projects

The pain users describe: [Chrome Ext] iamshihab2020/tabdeck: A beautiful, feature-packed new tab page for Chrome.

Timing / why now: [no explicit trigger]

Existing alternatives: chromex

Help me draft an MVP technical plan:
1. Core user flow (happy path, 3-5 steps)
2. Data model (main tables and their key fields)
3. Tech stack recommendation (favor fast-to-ship options)
4. First 3 things to build this weekend
5. What NOT to build in v1 (scope discipline)

Context source: gapmine.com/opportunities/2026-04-29/chrome-ext-iamshihab2020-tabdeck

Prompt built by concatenating your real fields · 0 AI rewording · source link included for traceability

Build playbook · if validated ~1-2 weeks

Build only after VALIDATE THIS WEEK succeeds · Based on difficulty × medium and sector × dev-tools · curated playbook

1 Write 1-page spec + data model in Notion
2 Build MVP in 1 weekend: React + Supabase/Convex
3 Ship to 4 users in chrome_ext · price vs existing tools
Sign up to save

Evidence pool 4

Grouped by signal type · click each source to verify

2 chrome_ext1 github1 alternativeto
DEMAND (2)
DEMAND [chrome_ext] [Chrome Ext] iamshihab2020/tabdeck: A beautiful, feature-packed new tab page for Chrome. · ↑13 · developer · Source ↗
DEMAND [chrome_ext] [Chrome Ext] tranthangit/NoteCute: A cute cork-board sticky note Chrome extension (Manifest V3) with drag & drop, 4 note types, bilingual EN/VI support, and Riv · ↑12 · hobbyist · Source ↗
PRODUCT (1)
PRODUCT [github] [Trending] GENEXIS-AI/chromex: A Codex-powered Chrome side-panel assistant for page context, tabs, voice, and image workflows. · chromex · free · developer · Source ↗
EVENT (1)
EVENT [alternativeto-new] [alternativeto-new] Chrome finally brings vertical tabs and an immersive reading mode for better productivity · Chrome Vertical Tabs · Source ↗

This problem also appears in 2

Other cards mapped to the same canonical need · chrome ext · member N=4

Topic hotness · weekly

Sample N=2 · need 6+ across 2 weeks

Weekly hotness surfaces once 6+ daily topic snapshots collected (3 in each week).

Updated daily at 07:00 UTC.

Signals last 14 days

Sample N=0 · need 3+ days

Sparkline shows once we have 3+ days of signals for this topic.

Momentum

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