We’ve closed a $9.4M Series A to give product language a real system. Read the note

Draft with clarity. Reviewing Shipwith proof.

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One library for every string your product says — drafted, reviewed, localized, and released without a single copy-paste.

5,400+ teams write with Quillon

Every sentence inside your product is the most DECISIVEDECISIVEDECISIVE instrument you have for moments that CONVERT, teach, and {{ADAPT}}.

And still, that language gets handled like a loose end.

We all ship on shorter cycles now, SOONER. Teams pour years into Termtooling for every other layer of the product.

Yet everyone—design, engineering, legal—still hunts for copy across docs, spreadsheets, mockups148×24, tickets, LocaleENtranslation files, experiment tools, message threads17 52 Reviewer avatar — photo by Korede Adenola on PexelsReviewer avatar — photo by Thanh Xuan Nguyen Ly on PexelsReviewer avatar — photo by Ben Khatry on Pexels , and even $ {`hardcoded.strings`}. That scavenger hunt costs you releases, and it costs you trust.

Your product’s language deserves a system. It should be your SHARPEST ADVANTAGESHARPEST ADVANTAGE —clear, consistent, and ready to change as fast as your customers do.

So we built aBetter Way

Give your product’s language the same rigor as its code, at every stage of the workflow.

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Draft every string in one dedicated space. Attach it to a design the moment you’re ready — the text keeps its history either way.

Make every word earn it.

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One source for every string

Design, review, and code all read the same version. No exports, no drift, no “which doc is current?”

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Know what’s approved

Feedback and sign-off live beside the text, so every decision keeps the context it was made in.

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Catch drift automatically

Voice and terminology checks run on save, so nobody has to spend their week playing copy police.

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Change words, not builds

Update live strings straight from the library and keep improving the product without a deploy queue.

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See how teams put Quillon to work

Small words, large consequences

See how 5,400+ teams cut review cycles and ship language they can defend.

Read the case studies
64%
faster turnaround on copy fixes
32
hrs of dev time saved per release
18%
shorter release cycles

Numbers aside, the real change is that I trust what’s in the product. When something reads wrong we catch it the same afternoon instead of the next quarter, and nobody has to file a ticket to fix a comma.

Content Designer, Larkfield Health

With our metrics in Sightline and our copy in Quillon, we can watch a confusing state show up and rewrite it that day. We push language updates most weeks now, without a release train.

Staff Engineer, Larkfield Health

Start shipping language you can stand behind.

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