Top 8 SaaS design system agencies

Eleken builds SaaS systems on a month-to-month, dedicated-designer model, auditing existing assets, building the component library, then staying on to keep it current as the product changes. The subscription structure is the point: the system doesn't decay the week the engagement ends.

Services

SaaS design systems, UI/UX design, style-guide audits, design tokens, ongoing maintenance.

Notable work

Systems and UI kits for SaaS companies including FlourishON, Cylynx, and MyInterview, from a roster of 100-plus SaaS products over nine years.

Ideal client

SaaS teams that want a system stood up and then maintained continuously, without a long contract. Less relevant if you want a one-time delivery and no ongoing relationship.

Key facts

Clay began as a SaaS and enterprise UX shop, so systems work is native to how it operates rather than a bolt-on. For a SaaS product that needs its interface system to stay consistent with a maturing brand, having both under one roof removes a handoff.

Services

Design systems, SaaS and product UX/UI, product strategy, web design and build, brand identity.

Notable work

Product and interface work for Google, Amazon, Slack, Coinbase, Snapchat, Sony, and Stripe, with systemized UI under the larger builds.

Ideal client

Funded SaaS companies that want a system tied to product and brand together. Less of a fit for a bare-bones component library on a tight budget.

Key facts

MetaLab builds design systems as the structural core of the products it ships, with strategy, design, and engineering in one place. Its reference-grade SaaS work is the case for it, and the reason it costs what it does.

Services

Product design, design systems, UI/UX, prototyping, engineering.

Notable work

Interface work for Slack, Coinbase, and Uber Eats, with systemized foundations under those products.

Ideal client

Well-funded SaaS teams that want a premium system created in lockstep with the product and can invest accordingly. Not the budget option.

Key facts

Merge runs design systems as an explicit service line inside its SaaS and fintech product work, taking a product from MVP through scale with design and development close together. Practical when the system has to grow with the product rather than being finished up front.

Services

Design systems, product and UX design, UI, web and product development.

Notable work

SaaS and fintech product design and development, from early MVPs to mature platforms.

Ideal client

B2B and SaaS teams that want the system built as part of the product engineering, not handed over as files. Less suited to design-only, no-build scopes.

Key facts

A small, senior, fully remote team that designs complex SaaS and digital products and builds reusable UI foundations as part of the work. It caps active engagements, so the system comes from principals rather than a junior bench.

Services

Product and UX design, UI systems, design strategy.

Notable work

No public client list, so this one is judged on the portfolio directly.

Ideal client

Startups and growth-stage SaaS teams that want a tidy, consistent system without agency overhead. Not built for enterprise-scale, multi-team governance.

Key facts

Cieden works on the harder end of SaaS, where dense data and several user roles make consistency difficult, embedding senior designers with business analysts to keep complex products coherent.

Services

Design systems, B2B and enterprise SaaS design, AI and ML interface design, UX strategy and audits.

Notable work

Product and system work across 200-plus projects, including Apollo and Blizzard.

Ideal client

B2B SaaS teams with dashboards, compliance, or multiple roles to standardize. Less relevant for a simple consumer-style app.

Key facts

A product design and development consultancy well known in the engineering community, thoughtbot treats systems as shared, code-backed foundations built and maintained by the same team that ships the product. The design and development sit together, which suits SaaS teams wary of a design-file system drifting from production.

Services

Design systems, product design, software development, strategy.

Notable work

Product design and development across a broad SaaS and startup client base; assess case studies for sector fit.

Ideal client

SaaS teams that want the system to be real, versioned code rather than a Figma library. Less of a fit if you want visual-brand-led work over engineering.

Key facts

A product studio that treats design systems as standard practice rather than an add-on, structuring each around tokens, components, and documented rules its engineers can pick up. It also publishes its own system template, which is a useful preview of how it works.

Services

Design systems, product design, UX/UI, web development.

Notable work

Systems created and maintained across its SaaS and product clients, plus a public design-system template used widely by designers.

Ideal client

SaaS teams that want a well-documented, engineering-aligned system from a studio that does this by default. Less suited to heavyweight enterprise governance programs.

Key facts