All 88 categories
Operating Systems — Kindle Category Opportunity
Competition snapshot for the Computers & Technology best-seller list, vacancy score 62.5/100.
Low competitionStagnant
Category metrics
Score
62.5
Median reviews
24.5
Weak share (top 20)
55%
Median price
$7.77
Median star rating
4.5
Books scanned
50
Worth writing in?
Operating Systems reads as low-competition at first glance, but the full list shows thin reader activity — the median book has just 24.5 reviews. Weak incumbents here usually mean weak demand, not an open door. Vacancy score 62.5/100.
Breakout books — top 15, under 100 reviews, $0.99–4.99
Best-seller list on Amazon| # | Title | Star | Reviews | Price |
|---|---|---|---|---|
| 12 | Bash for Beginners 2026: The Complete Guide to Shell Scripting, Automation, and the Linux Command Line (The Beginner's Tech Library Book 3) | — | 0 | $0.99 |
| 13 | WINDOWS 11 USER GUIDE FOR SENIORS AND BEGINNERS: An Easy Step-by-Step Visual System with Illustrated Instructions and Clear Explanations to Help You Navigate ... Tasks (Senior Tech Confidence Series) | 4.3 | 12 | $0.99 |
| 2 | How to Manage Content and Devices in My Kindle Library: Download, Borrow, Share and Archive eBooks | 3.5 | 24 | $0.99 |
| 11 | Linux for Beginners: The Complete Survival Guide to Commands, Terminal, and System Administration | 4.8 | 48 | $0.99 |
| 1 | How to Install a Kindle on Your Device: A simple step to installing a Kindle app in few minutes (for iOS, Android, Mac, and PC) | 3.3 | 100 | $2.99 |
More Computers & Technology categories
Check the keywords before you write
Category scores show where the shelf is weak; keyword lookups show whether readers actually reach for it. A free account includes keyword competition lookups plus unlimited category scans.
Research snapshot scanned on Oct 10, 2026. Refreshed periodically — not live tracking.