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Kalm

Open source: Block ads and YouTube scam/NSFW comment bots

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This is 1 of 55 launches in content and website blockers — see how it stacks up on momentum and crowding →

36 other launches read as similar to this one →

Details

External ID
1277580
Source
PH
Company
—
Product
Kalm
Website domain
producthunt.com
Launched
Oct. 13, 2026
Cohort
—
Upvotes
1
Upvotes percentile
0.33
Tags
Chrome Extensions, Open Source, GitHub

Description

Kalm combines ad blocking based on uBlock Origin Lite, including YouTube ad filters, with a YouTube scam/NSFW comment bot blocker. It checks comment links, public author bios and visible channel promotions before showing comments—even when the text looks ordinary. Add blocked sites or keywords, optionally hide all linked comments, and choose a filtering level per website. Free and open source, with local checks and cached author decisions. Available on Chrome.

Enrichment

Niche
content and website blockers
Vertical
Security
Function
Workflow automation
Audience
B2C
AI stance
Not AI
Project type
Hobby / open-source project
Normalized one-liner
ad and scam bot blocker for youtube
Manually corrected
False

Could you build this?

Yes It can be implemented as a browser extension using standard WebExtensions APIs, packaging existing open-source blocking rules and DOM-scraping YouTube comment elements to check links and author attributes.

Competitors

Other products that read as similar to this one — 36 launches clear the similarity bar, closest 8 shown.

Attention rank: #17 of 37 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 301 days after the earliest competitor.

Other launches for this product