Launch Promo: 66% Off Forever

Put your dev tool in front of thousands of builders

Fossy is the curated directory for developers discovering top open-source repositories. No cookie banners, no bloated trackers—just premium native ad slots that convert.

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Interactive Ad Sandbox

See exactly how your sponsorship looks live in our sidebars. Click presets to get started.

Choose a Quick Preset

Product / Ad Title

CTA Button Text

Ad Copy / Description71/120

Accent Frame Color

#2A7462

Target Link URL

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Book Sandbox Ad

fossy.dev/sidebar/ad

Live Sidebar Slot (300 × 250)

Sponsor

YourDevToolFeatured Slot

The easiest way to deploy serverless backend workers in a single click.

fossy.dev/ref

Click the preview CTA button to simulate a click!

Instant Cost Comparison

ROI Conversion Calculator

Fossy sponsors don't pay per click. You pay a simple, low monthly flat rate. Adjust the parameters below to estimate your effective Cost-Per-Click (CPC) compared to other platform standards.

Estimated Monthly Impressions25,000 views

5k views50k views100k views

Average Click-Through Rate (CTR)1.6% CTR

0.5% (Conservative)2.0% (Average)4.0% (Maximum)

Effective Monthly Performance

400 clicks/mo

Based on 1.6% CTR across 25,000 views.

Your Price

$50/mo

🔒 Locked-in Promo

Effective CPC

$0.13

Per Targeted click

Cost per Developer click comparison

Fossy (Targeted Dev Directory)$0.13

Google Ads (Developer keywords)$4.80

Twitter Ads (Dev/Founder tag)$3.50

Dev Newsletters (Per Issue slot)$6.20

Fossy vs. The Old Way

Why native directory sponsorship beat standard PPC advertising.

Feature / Benefit	Fossy dev	Standard Ad Networks	Social/Twitter Ads
100% Developer Audience	Yes	No (General public)	Partial (High bot ratio)
Ad-Blocker Resistant	Yes (Native HTML)	Blocked by default	Blocked by default
Zero User Tracking Cookies	Yes (Privacy first)	No (Aggressive trackers)	No (Heavily tracked)
Fixed Pricing (No bidding wars)	Yes ($50/mo lock)	No (Fluctuating CPC)	No (Fluctuating CPM)
Ad Fatigue Rate	Extremely Low	High	Extreme

Why sponsor FOSSY?

Premium native slot placement

Your ad lives as a standardized 300x250 slot matching our design tokens. No annoying popups, overlays, or layout shifting.

High-intent developer traffic

Fossy visitors are actively searching for tools, comparing options, and finding projects to contribute to. It is the perfect funnel for developer tooling.