Software Studio · Est. 2026

Smart. Simple.
Software.

S3 Labs is a software studio shipping single-purpose apps that are free or one small one-time purchase — no subscriptions, no ads, no upsells.

Try DropDoc ↗ See what we're building
S3 Labs mark
3
Tools shipped & live
2
More in the lab
$0
Subscriptions — ever
Featured · Our first app

DropDoc DropDoc

Drop an HTML file, get a shareable URL in seconds. Your recipient sees the report exactly as designed — no account, no install, no PDF compression ruining the type.

01 →Drop. Any HTML report, up to 1.25 MB.
02 →Share. Get a stable /r/ URL in seconds.
03 →Open. Clients see it exactly as designed.
Try DropDoc ↗ Free to use · No account needed
The Lab

Tools you can try today

3 shipped · 2 in progress
DropDoc
Live

DropDoc

Drop an HTML file, get a stable shareable URL in seconds.

dropdoc.sh
StyleSnap
Live

StyleSnap

Paste a URL, get a clean, printable PDF style guide.

stylesnap.design
Persona
Live

Persona

Turn a URL into clear, actionable user personas.

personalab.im

Have an idea for a tool? Let's talk.

Tell us the problem. If it fits the lab, we'll build it — single-purpose, and never a subscription.

Get in touch →