Index
Browser extension ideas
This shelf holds 5 startup ideas about browser extensions. Average Hotness is 3.60, on a 1 to 5 scale that mixes pain, willingness to pay, public-thread demand, the gap left by current tools, build effort, and how fresh the evidence is. Scores cool when no newer evidence is added. The strongest score here is 3.85 for Teacher-Controlled Blocklist for Viral Game Sites: Teachers switch on a community-updated blocklist per class, without waiting on district IT. Also on this shelf: Locked Assignment Windows Inside the LMS, Lowball Offer Detector for Job Postings, Browser-Only Security for BYOD Contractors, and Context Snapshots for On-Call Engineers. The most common way these products charge is B2B SaaS (3 of 5). 4 are aimed at a business buyer and 1 at an individual. 1 look weekend-easy, 2 moderate, and 2 hard. Open a page for the complaint, the source link, and the gaps. The ideas are free to build. The agent prompt is the part that costs a credit.
Teacher-Controlled Blocklist for Viral Game Sites
Teachers switch on a community-updated blocklist per class, without waiting on district IT.
Locked Assignment Windows Inside the LMS
Verifiable in-class 'closed windows' for assignments, built into Canvas, instead of hacky access codes.
Lowball Offer Detector for Job Postings
A browser extension that saves the posted salary range when you apply and flags offers below it.
Browser-Only Security for BYOD Contractors
Session-level controls on copy, download and access logs for contractors on their own PCs, no MDM agent.
Context Snapshots for On-Call Engineers
Save your working context (logs, services, hypotheses) before switching and restore it in one click.
Questions
How many startup ideas are in browser extensions?
There are 5. The highest Hotness is 3.85 for Teacher-Controlled Blocklist for Viral Game Sites.
Which idea should a founder open first?
Open Teacher-Controlled Blocklist for Viral Game Sites if you want the strongest score on this shelf. If you want a shorter build, use the weekend-easy collection and come back to the ideas that match both.
What is free here?
Every idea page, the sources, and this index are free. An agent PRD costs one credit. The first credit comes with an email signup. Building any of these ideas is allowed.