Wasmer

Edge Computing Platformwasmer.io

Wasmer is a Y Combinator-backed WebAssembly platform offering a Rust-built runtime, public package registry, and globally distributed edge cloud with sub-1ms cold starts. It serves individual developers, web agencies, and small businesses deploying PHP, Python, JavaScript, and Rust applications.

Company typePrivate
Founded2018
HeadquartersSan Francisco, United States
Headcount1–10
GTM typeB2B and B2C
OfferingSoftware

What Wasmer does

Wasmer is a Y Combinator-backed WebAssembly platform company founded in 2018 and headquartered in San Francisco, with 1-10 employees. It operates a vertically integrated stack of three core products: the Wasmer Runtime, a WebAssembly execution engine built in Rust whose LLVM backend reaches within 5% of native performance; the Wasmer Registry, a public package manager and discovery platform for WebAssembly packages; and Wasmer Edge, a globally distributed serverless platform that deploys WebAssembly containers across 9+ regions with sub-1ms cold starts and usage-based pricing of $0.20 per million requests. Proprietary extensions include WASIX, which adds POSIX socket and multithreading support to standard WASI, and InstaBoot, a snapshot-based pre-warming technology that drastically reduces cold starts for interpreted languages such as PHP and Python.

The company monetizes through subscription-based managed cloud hosting (free tier plus Pro plan) and a usage-based edge platform, with product-led distribution via the wasmer CLI, GitHub integration, and a template library covering WordPress, Hugo, Astro, Next.js, Laravel, Django, and other major frameworks. The primary customer segments are individual software developers and web development agencies, with secondary use cases among PHP developers and small businesses seeking low-cost hosting. Wasmer claims a community of more than 20,000 users, 15,000 GitHub stars, and adoption or testing by Cloudflare, Vercel, Meta, and Kong. Differentiated technical work, including the first-known PHP opcode caching implementation in WebAssembly (yielding a 3x speedup for WordPress), positions the company in a niche where few competitors match the combination of near-native performance, POSIX-grade networking, and developer-friendly deployment without code changes.

Wasmer firmographics

Firmographics

Name: Wasmer
Legal name: Wasmer
Website: https://wasmer.io
Company type: Private
Founded year: 2018
Operating status: Operating
Headcount range: 1–10 employees
Short description: Wasmer is a Y Combinator-backed WebAssembly platform offering a Rust-built runtime, public package registry, and globally distributed edge cloud with sub-1ms cold starts. It serves individual developers, web agencies, and small businesses deploying PHP, Python, JavaScript, and Rust applications.
Ownership category
akta.pro rank

Wasmer industry classification

Industry

Product category: Edge Computing Platform
NAICS: Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518), Computer Systems Design and Related Services (54151)
SIC: Services-Computer Programming, Data Processing, Etc. (7370), Services-Prepackaged Software (7372)
akta.pro primary industry: Load Balancing & Application Delivery (ADC, Global Load Balancing) (HDABAGAF)
akta.pro secondary industries: Hyperscale & OCP Server Designs (HDABADAB), API-First Backend Platforms (BaaS/mBaaS & Serverless Backends) (HDAEAKAH)

Keywords

WebAssembly runtime
Edge computing platform
Serverless deployment
Application hosting
WASM package registry

Where Wasmer is headquartered

Location

Headquarters

HQ city: San Francisco
HQ country: United States
HQ region: North America

Markets served

Wasmer business model

Business model

GTM type: B2B and B2C
Offering type: Software
Cost components: Infrastructure, Technology or R&D, Personnel, Marketing or Sales, Operations

Revenue model

Cloud Hosting / Managed Infrastructure: Revenue from hosting and scaling customer applications on Wasmer Edge infrastructure. Applications scale automatically from zero to high traffic, with pricing based on requests and CPU time. Free tier offered for hobby/personal projects; Pro tier for commercial use. Includes managed database provisioning (MySQL), persistent volumes, SSL certificates, and custom domain support.
WebAssembly Package Registry: Community registry for discovering and publishing WebAssembly packages. Publishers can distribute packages while Wasmer may take a commission or drive adoption of the platform through ecosystem lock-in.

Pricing tiers

Model	Billing	Price
Freemium	Monthly	Free tier for hobby/personal projects
Subscription	Monthly	Pro plan for commercial projects
Usage-based	Pay-as-you-go	Edge platform cost efficiency

Go-to-market motion1 record

Distribution channels5 records

Marketing channels7 records

Wasmer product offering

Product offering

Core offering

Wasmer builds and operates a WebAssembly-based universal application platform consisting of three core products: the Wasmer Runtime (a WebAssembly execution engine achieving near-native performance), the Wasmer Registry (a package manager and distribution system for WebAssembly packages), and Wasmer Edge (a globally distributed serverless edge computing platform for deploying WebAssembly containers). Supporting offerings include WASIX (an extended WASI specification), WinterJS JavaScript runtime, and specialized hosting services for PHP, static sites, and web applications.

Product overview

Wasmer is a WebAssembly-based universal application platform consisting of three core products: Wasmer Runtime (the WebAssembly execution engine achieving near-native performance), Wasmer Registry (the package manager and distribution system for WebAssembly packages), and Wasmer Edge (the serverless edge computing platform for deploying WebAssembly containers globally). Supporting products include WASIX (extended WASI for socket support), WinterJS (JavaScript runtime), and the static-web-server package. Wasmer also offers specialized hosting services including PHP Hosting, Static Site Hosting, and Free Web Hosting, all running on the Wasmer Edge infrastructure. The platform is Y Combinator-backed and used by companies like Cloudflare, Vercel, Meta, and Kong.

Differentiator

Problem solved

Functional benefit

Products and services

Wasmer Runtime
Wasmer Registry
Wasmer Edge
PHP Hosting
Static Site Hosting
Free Web Hosting

Quantifiable outcome

3x faster PHP workloads in WebAssembly (WordPress rendering reduced from ~620ms to ~205ms with opcode caching enabled)
+4 more outcomes

Companies that use Wasmer

Customer profile

Segments3 records

Ideal customer profiles3 records

Wasmer technology and API

Technology

Technology focussed Yes

API detail

Has API: Yes
API docs
API detail

Core technology

AI maturity

App detail

Integration1 record

Feature6 records

Wasmer partnerships and signals

Strategic signal

Partnerships

One partnership is on record.

WinterJS (by Wasmer)coreTechnology or IntegrationWinterJS is Wasmer's JavaScript runtime that brings JavaScript to Wasmer Edge. It is published as a package (wasmer/winterjs) on the Wasmer registry and used as the runtime for JavaScript Workers on the platform. Enables running JS service workers on edge infrastructure.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Wasmer competitors and assessment

Company assessment

Direct peers

Cloudflare Workers: Cloudflare's serverless edge compute platform runs JavaScript and increasingly WebAssembly at 300+ cities globally. Most direct competitor to Wasmer Edge, with Wasm support, cold-start benchmarks, and a usage-based pricing model that Wasmer explicitly compares itself against.
Fastly Compute@Edge: Fastly's edge compute product was an early Wasm-on-the-edge pioneer (originally built on Lucet, now Wasmtime) and serves similar developer personas with isolate-based isolation. Competes on cold-start latency and language support — directly comparable to Wasmer's value proposition.
Akamai EdgeWorkers: Akamai's edge compute platform runs JavaScript and WASM-based functions at the edge of its CDN. Targets similar serverless-at-the-edge use cases with a large incumbent distribution network — directly competes with Wasmer Edge for enterprise edge workloads.
Vercel Edge Functions: Vercel's edge runtime deploys JavaScript and Wasm-based functions globally, tightly integrated with Next.js. Wasmer's homepage explicitly features Vercel as a benchmark user/competitor — directly comparable in targeting web developers deploying frontend frameworks at the edge.
Deno Deploy: Deno's edge platform runs TypeScript/JavaScript and WebAssembly globally with isolate-based isolation. Targets the same developer audience as Wasmer with a strong open-source runtime (Deno) and edge hosting, comparable on isolation, cold starts, and developer experience.
Fermyon: Fermyon builds the Spin framework and Fermyon Cloud for WebAssembly-based serverless applications. Most directly comparable pure-play Wasm serverless competitor to Wasmer, with similar focus on portable Wasm workloads, multi-language SDKs, and cloud-hosted execution.
Cosmonic: Cosmonic provides a WebAssembly-based distributed application platform (built on wasmCloud) targeting microservices and edge workloads. Comparable to Wasmer in being a Wasm-native platform serving developers who want to run Wasm workloads in production across distributed infrastructure.
Fly.io: Fly.io runs application containers on a global edge network with focus on simplicity and developer experience. Wasmer benchmarks itself against Fly.io on cold starts and pricing — comparable in targeting developers wanting globally distributed applications without cloud complexity.
Netlify Edge Functions: Netlify's edge functions run JavaScript and Wasm at the edge of its CDN, deeply integrated with the Netlify frontend platform. Comparable to Wasmer for web developers deploying static sites and Jamstack applications with edge logic — same target persona and pricing model.

Broad incumbents

AWS Lambda@Edge: AWS Lambda@Edge runs Lambda functions at CloudFront edge locations as part of the broader AWS ecosystem. Wasmer explicitly benchmarks against Lambda on cold starts (300ms vs sub-1ms) and pricing — a broad incumbent with massive distribution rather than a direct Wasm-native specialist.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Wasmer financial estimates

Financial estimate

Revenue estimate

Valuation estimate

Wasmer leadership team

Management profile

Number of profiles

Profiles1 record

Wasmer funding detail

Funding detail

Funding overview

Funding rounds2 records

Investors6 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

Wasmer M&A and investment

M&A and investment

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Wasmer

What does Wasmer do?

Is Wasmer a public or private company?

Wasmer is a private company. It is classified as venture growth investor backed and is currently operating.

When was Wasmer founded?

Wasmer was founded in 2018. It employs 1 to 10 people.

Where is Wasmer based?

Wasmer is headquartered in San Francisco, United States, in the North America region.

How does Wasmer make money?

Two revenue lines are on record. Cloud Hosting / Managed Infrastructure is the primary driver. The others are webAssembly Package Registry.

Who are Wasmer's main competitors?

Direct peers on record are Cloudflare Workers, Fastly Compute@Edge, Akamai EdgeWorkers, Vercel Edge Functions, Deno Deploy, Fermyon, Cosmonic, Fly.io and Netlify Edge Functions. AWS Lambda@Edge is listed as a broad incumbent.

Does Wasmer have an API?

Yes. Wasmer provides a GraphQL API for the registry at https://registry.wasmer.io/graphql. The CLI interacts with this API for package publishing and management. Commands like 'wasmer config set registry.url' point to the GraphQL endpoint. Developer documentation is at docs.wasmer.io/graphql-api.

What industry is Wasmer in?

Wasmer's product category is Edge Computing Platform. Its primary akta.pro industry code is HDABAGAF, Load Balancing & Application Delivery (ADC, Global Load Balancing), with a secondary code of HDABADAB, Hyperscale & OCP Server Designs. Its NAICS code is 5182 and its SIC code is 7370.