Seamly
Seamly Systems builds Seamly2D, a free open-source apparel CAD platform using parametric pattern design to automatically generate all sizes from a single pattern, serving fashion designers, brands, and made-to-measure apparel manufacturers.
- Company typePrivate
- Founded2021
- HeadquartersPaducah, United States
- Headcount1–10
- GTM typeB2B
- OfferingSoftware
What Seamly does
Seamly Systems, Inc. is a Delaware-incorporated fashion technology company founded in 2021 with operations in Paducah, Kentucky. The company develops and distributes Seamly2D, a free and open-source apparel computer-aided design (CAD) application available for Windows, Linux, and MacOS, complemented by SeamlyMe, a mobile application for capturing individual body measurements, and a scan-to-pattern workflow that converts 3D body scans into precise pattern files through integrations with 3DLook and 3DMeasureUp.
Seamly's core technology is parametric pattern design, which retains engineering calculations behind pattern geometry and enables automatic multi-size generation from a single pattern — including plus sizes — without manual re-entry. This architecture differs from legacy vector-based fashion CAD software. Patterns export in the DXF-ASTM e-pattern format for vendor-agnostic interoperability with apparel manufacturing systems and CNC cutting machines, and community contributions through GitHub drive ongoing feature development and internationalization.
The commercial model combines open-source distribution with planned enterprise licensing of the parametric design engine and API integration services aimed at fashion brands and made-to-measure apparel manufacturers. Seamly is bootstrapped and funded through state of Kentucky grants rather than traditional venture capital, discloses no revenue, and offers pricing for enterprise use on a quote-based, undisclosed basis. CEO Susan Spencer additionally chairs ASTM International's D13.66 Sewn Product Automation subcommittee, positioning Seamly at the center of open standards development for the apparel industry.
Seamly firmographics
Firmographics- Name
- Seamly
- Legal name
- Seamly Systems, Inc.
- Website
- https://seamly.io
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Seamly Systems builds Seamly2D, a free open-source apparel CAD platform using parametric pattern design to automatically generate all sizes from a single pattern, serving fashion designers, brands, and made-to-measure apparel manufacturers.
- Ownership category
- akta.pro rank
Seamly industry classification
Industry- Product category
- Fashion CAD Software
- NAICS
- Apparel Manufacturing (315)
- SIC
- Apparel & Other Finishd Prods Of Fabrics & Similar Matl (2300)
- akta.pro primary industry
- Custom Tailoring & Made-to-Measure Adjustments (HSAJAFAM)
- akta.pro secondary industry
- Scan-to-CAD & Reverse Engineering Software (IMAAAHAE)
Keywords
Where Seamly is headquartered
LocationHeadquarters
- HQ city
- Paducah
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Seamly business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure
Revenue model
- Seamly2D Open Source Software: Seamly2D is offered as free and open source software, enabling broad adoption and community-driven development. No direct revenue is generated from the core software itself.
- Enterprise/B2B Licensing and Integration Services: Seamly targets fashion brands and enterprises with its software that reduces design cycle times by 50% and saves up to $5,000 per design per market. Revenue may be derived from enterprise licensing, API integration services, or customization engagements.
- Government Grants: Seamly Systems is funded through grants from the state of Kentucky. These non-dilutive funds support R&D and company operations.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Monthly | Seamly2D - Free and Open Source |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels9 records
Seamly product offering
Product offeringCore offering
Seamly provides free and open-source fashion CAD software (Seamly2D) for parametric pattern design that automatically generates all sizes from a single pattern, plus the SeamlyMe mobile app for capturing individual body measurements. The platform supports a scan-to-pattern workflow that converts 3D body scans into made-to-measure garment patterns and exports DXF-ASTM e-pattern files compatible with any apparel manufacturing system or CNC cutter.
Product overview
Seamly offers a suite of fashion design software centered around its core open-source product Seamly2D, complemented by the SeamlyME measurement application. Seamly2D is free, open-source apparel CAD software for parametric pattern design, while SeamlyME captures individual body measurements. The products integrate through a scan-to-pattern workflow that connects 3D body scanning technology (via 3DLook and 3DMeasureUp partnerships) with automated pattern generation, enabling made-to-measure garment production. The software emphasizes Universal sizing solutions that create all sizes from a single pattern, addressing the fashion industry's need for extended size ranges and fit customization.
Differentiator
Problem solved
Functional benefit
Brands
- Seamly2D: Free and open source fashion design software for pattern-making
- SeamlyMe
Products and services
- Seamly2D Free and open-source apparel CAD software for Windows, Linux, and MacOS that allows fashion design agencies of all sizes to create patterns quickly and easily. Retains engineering calculations behind pattern geometry, enabling automatic pattern resizing and parametric design across all size ranges including plus sizes.
- SeamlyMe Mobile measurement application that allows users to enter individual body measurements. SeamlyMe measurement files (.val format) load into Seamly2D patterns and auto-adjust to those dimensions for made-to-measure garment creation.
Quantifiable outcome
- Saves fashion brands up to $5,000 per design per market; brands producing 50 designs yearly across Regular, Plus Sizes, and Petites can save over $150,000 in sizing costs alone.
- +3 more outcomes
Companies that use Seamly
Customer profileNamed customers1 record
Segments4 records
Ideal customer profiles3 records
Seamly technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration3 records
AI capability2 records
Feature6 records
Seamly partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core.
- Daymode.frcoreParis-based Daymode.fr is a strategic partner in Seamly's scan-to-pattern proof-of-concept, creating fully automated made-to-measure garment production. The collaboration began with custom costumes for 20 dancers and is designed to validate the technology in a real-world production environment.
- Kitac.frcoreParis-based Kitac.fr partners with Seamly on the scan-to-pattern proof-of-concept for made-to-measure clothing. Kitac contributes to the automated garment production workflow, complementing Daymode.fr in this pioneering initiative.
- 3DLook.aicore3DLook provides the Mobile Tailor body scanning app (requiring just two photos) and API that feeds body scan data into Seamly's scan-to-pattern workflow. 3DLook's technology enables precise body measurements to be converted into Seamly measurement files, enabling made-to-measure garment design.
- 3DMeasureUp.aicore3DMeasureUp.ai converts 3D body scanner mesh .obj files from any body scanner into precise measurements in Seamly format. It serves enterprise clients including Armani and Sony Pictures, and provides the measurement conversion layer in Seamly's scan-to-pattern pipeline.
- 3DLOOK (Mobile Tailor Integration)coreSeamly's integration with 3DLOOK's Mobile Tailor body scan measurement files enables users to convert 3DLook body scans directly into Seamly2D measurement files via email. The integration is currently in beta phase with direct email conversion available.
Scale indicators5 records
Recent moves6 records
Expansion highlights5 records
Seamly competitors and assessment
Company assessmentDirect peers
- Optitex: Provides 2D/3D CAD and pattern-making software for apparel manufacturers, the same buyer and use case Seamly targets. Direct overlap on digital pattern design for fashion brands.
- Wild Ginger Software: Pattern making, fitting, and customization software for home sewers and small apparel businesses, competing for the same independent pattern-maker buyer as Seamly.
- Tukatech: Apparel CAD, pattern-making, and marker-nesting software historically aimed at pattern makers and small-to-mid fashion brands — a buyer segment Seamly also serves with its parametric pattern tools.
- Browzwear: 3D fashion CAD platform (VStitcher) for digital apparel design and fit simulation. Overlaps with Seamly's 3D and pattern workflow positioning for fashion brands and manufacturers.
- CLO 3D (CLO Virtual Fashion): 3D garment simulation and digital fashion design tools used by brands for virtual sampling. Competes for the same fashion-design software budget Seamly targets, with deeper 3D simulation strength.
- Valentina (Pickatoad Software): Open-source pattern design software — the closest peer to Seamly2D on architecture and positioning, including free, open distribution and a community developer base.
- Pattern Maker Software: Long-standing pattern design tool for fashion designers and pattern makers, used as a direct alternative to Seamly2D for individual pattern makers and small studios.
- Style3D (Linctex Digital Technology): 3D fashion design and digital apparel platform serving brands from design to virtual sampling, providing a comparable SaaS-driven CAD and pattern workflow for fashion houses.
Broad incumbents
- Lectra (including Gerber Technology): Largest apparel technology incumbent offering CAD, pattern, and PLM solutions (and Gerber's traditional CAD line) to large fashion brands. Provides the established competitor set Seamly must displace in enterprise accounts.
Emerging players
- MTailor: Consumer made-to-measure shirt maker that uses smartphone-based body scanning — adjacent to Seamly's scan-to-pattern thesis but focused on end-consumer garment fulfillment rather than design tooling.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
Seamly social profiles
Digital presenceSeamly compliance and trust
Trust signalCompliance2 records
Seamly financial estimates
Financial estimateRevenue estimate
Valuation estimate
Seamly leadership team
Management profileNumber of profiles
Profiles1 record
Seamly funding detail
Funding detailFunding overview
Funding rounds2 records
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Seamly M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Seamly
What does Seamly do?
Seamly provides free and open-source fashion CAD software (Seamly2D) for parametric pattern design that automatically generates all sizes from a single pattern, plus the SeamlyMe mobile app for capturing individual body measurements. The platform supports a scan-to-pattern workflow that converts 3D body scans into made-to-measure garment patterns and exports DXF-ASTM e-pattern files compatible with any apparel manufacturing system or CNC cutter.
Is Seamly a public or private company?
Seamly is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Seamly founded?
Seamly was founded in 2021. It employs 1 to 10 people.
Where is Seamly based?
Seamly is headquartered in Paducah, United States, in the North America region.
How does Seamly make money?
Three revenue lines are on record. Seamly2D Open Source Software is the primary driver. The others are enterprise/B2B Licensing and Integration Services and government Grants.
Who are Seamly's main competitors?
Direct peers on record are Optitex, Wild Ginger Software, Tukatech, Browzwear, CLO 3D (CLO Virtual Fashion), Valentina (Pickatoad Software), Pattern Maker Software and Style3D (Linctex Digital Technology). Lectra (including Gerber Technology) is listed as a broad incumbent. MTailor is listed as an emerging player.
Does Seamly have an API?
No public API is recorded for Seamly.
What industry is Seamly in?
Seamly's product category is Fashion CAD Software. Its primary akta.pro industry code is HSAJAFAM, Custom Tailoring & Made-to-Measure Adjustments, with a secondary code of IMAAAHAE, Scan-to-CAD & Reverse Engineering Software. Its NAICS code is 315 and its SIC code is 2300.