Companies Using Handlebars

As of our March 2026 crawl, Handlebars runs on 156,587 active domains with a 2.06% market share in JavaScript frameworks -- ranking 5th in its category. But that number masks a sharper story: the library dropped from 157,000 to 107,533 domains in just seven months during 2024-2025. Here's what our analysis of 80,787 enriched company profiles reveals about where Handlebars stands and who's still using it.

Growth Trajectory

Handlebars followed a textbook enterprise technology lifecycle. From a single domain in 2011, it grew modestly through 2013 before exploding in late 2014 when Ember.js and Meteor standardized on it as their default templating engine. The 2014-2021 period delivered steady 10-15% year-over-year growth as Node.js backend teams adopted Handlebars for email templates, server-side rendering, and PDF generation. The pandemic-era spike to 56,000 domains in 2020 reflected rapid digital transformation where teams chose Handlebars for its simplicity and Mustache compatibility.

Sales Signal: The 32% domain drop in seven months isn't natural churn -- it's active migration. Companies running Handlebars are making modernization decisions right now, creating a window for developer tools, migration services, and modern framework vendors.

"156,587 domains still run Handlebars, but the seven-month decline from 157K to 107K tells us these enterprises are finally modernizing their Node.js infrastructure. That's a massive DevOps and migration services opportunity." - David Thomson, Lead Data Analyst at TechnologyChecker.io

Customer Profile

Handlebars' customer base skews heavily enterprise. Fortune 500 corporations dominate our enriched data -- Amazon, Samsung, Deloitte, Bank of America, Oracle, PwC, DHL, and Marriott all run Handlebars in production. The 40.08% concentration in 2010s-founded companies reflects organizations that built Node.js infrastructure during the 2012-2018 microservices wave. Pre-1960 legacy enterprises account for 7.75% (3,093 companies), showing the tool's appeal to century-old institutions like banks and government agencies that prioritize template stability over developer experience.

Sales Signal: Handlebars presence indicates mature Node.js infrastructure built 5-10 years ago. These stacks likely run outdated dependencies and lack modern CI/CD automation -- prime candidates for DevOps modernization tools.

Industry and Geographic Concentration

The United States leads with 35.3% of customers (28,493 companies), followed by Germany at 8.7% (7,062 companies) and Brazil at 5.6% (4,534 companies). The UK (5.2%), Canada (3.9%), and Australia (3.4%) round out the top six. Industry-wise, Retail dominates at 7.6% (5,044 companies), followed by Real Estate (4.63%), IT Services (3.99%), and Software Development (3.77%). The Spectator Sports vertical at 1.9% is notable -- sports organizations often use Handlebars for email newsletters and ticket confirmation templates.

Sales Signal: Germany's strong second-place position (8.7%) suggests European enterprise adoption is significant. If you're selling modernization services, target US and German markets first -- they represent 44% of the Handlebars installed base.

Migration Patterns

Handlebars' migration data reveals a balanced but directional shift. The library has a 1.01:1 loss ratio against Vue -- 10,257 sites lost versus 10,152 gained. That looks like equilibrium, but the last year tells a different story: Vue gained 3,461 sites from Handlebars while Handlebars gained 4,498 from Vue. The largest inbound migration comes from RequireJS (14,082 sites), as teams replaced AMD loaders with modern bundlers but kept Handlebars for server-side work. Backbone.js contributed 11,832 inbound migrations, reflecting teams modernizing old SPAs while retaining Handlebars for backend templating.

Sales Signal: The RequireJS-to-Handlebars pipeline (14,082 sites) shows teams modernizing selectively. They're updating their module system but keeping the templating engine -- an incomplete modernization that creates opportunities for full-stack migration services.

"Handlebars gained 14,082 sites from RequireJS and 11,832 from Backbone.js, but it's losing ground to Vue at a 1.01:1 ratio. That tells us enterprises are modernizing in layers -- and they haven't reached the templating layer yet." - David Thomson, Lead Data Analyst at TechnologyChecker.io

Technology Ecosystem

Handlebars' tech stack overlap confirms it's a server-side utility, not a frontend framework. The 90.77% jQuery co-occurrence is the key signal -- these are traditional server-rendered apps where jQuery handles light interactivity. Core-js appears on 73.53% of sites, indicating ES5/ES6 polyfill usage targeting older browsers or Node.js versions. Google Tag Manager (65.37%) and Google Analytics (61.41%) show standard marketing instrumentation. The 27.67% React overlap reveals hybrid architectures where Handlebars handles transactional emails and marketing pages while React powers interactive dashboards. Shopify (27.09%) presence indicates merchants using Handlebars for custom email templates in Node.js backend services.

Sales Signal: The 90.77% jQuery overlap is your strongest modernization indicator. Modern frameworks have under 20% jQuery overlap -- Handlebars sites are running 2015-era stacks that need security scanning, dependency management, and performance optimization tools.

G2 Review Signals

G2 review volume for Handlebars is limited, but the available feedback highlights ease of use and template flexibility as standout strengths, with users praising its ability to keep code clean and reduce file sizes. The primary criticism centers on the learning curve around its unique syntax and lack of standardized patterns across projects. While formal review counts are sparse, our technographic data of 80,787 enriched companies provides a stronger signal: the 90.77% jQuery overlap and the steady inbound flow from RequireJS (14,082 sites) and Backbone.js (11,832 sites) confirm that teams choose Handlebars for predictability and stability, not modern features. The outbound flow to Vue (10,257 sites) suggests that when teams do leave. They're seeking the reactivity and component architecture that Handlebars doesn't provide.

Sales Signal: Users value simplicity and stability. If you're positioning a Handlebars replacement, don't lead with features -- lead with migration ease and backwards compatibility.

Key Takeaways

1. Enterprise stronghold in decline: Fortune 500 companies like Amazon, Samsung, and Bank of America still run Handlebars, but the 32% domain drop in seven months signals active migration is underway.
2. Server-side niche: The 90.77% jQuery and 73.53% core-js overlaps confirm Handlebars lives in legacy server-rendered stacks, not modern frontend architectures.
3. Migration is layered: Teams are replacing RequireJS and Backbone.js first, keeping Handlebars for email and PDF templating -- the templating layer is the last to modernize.
4. Hybrid architectures are common: 27.67% of Handlebars sites also run React, indicating transitional stacks where Handlebars handles backend templates while React powers the frontend.
5. Retail leads adoption: Retail (7.6%) is the top industry, driven by e-commerce email templates and order confirmation systems built on Node.js.
6. Germany is the European hub: 8.7% of Handlebars users are German companies, the highest non-US concentration in our dataset.

Sales Applications

Outreach Template: "Our data shows your site runs Handlebars alongside jQuery and core-js -- a stack profile we see on 90% of Handlebars deployments. Companies with this architecture are migrating to modern frameworks at a record pace, with 617,543 sites having already moved. We help enterprises modernize their templating layer without breaking email and PDF workflows."

Targeting Strategy: Focus on accounts showing Handlebars plus React (27.67% overlap) or Vue (20.27% overlap) -- these hybrid architectures indicate teams already in transition. Prioritize US (35.3%) and Germany (8.7%) for geographic targeting. Retail (7.6%) and IT Services (3.99%) offer the highest industry concentration.

Competitive Angle: Handlebars users chose the library for stability and Mustache compatibility -- they're conservative architects. Don't pitch bleeding-edge features. Position your solution as the natural next step: same logic-less philosophy, same template compatibility, with modern performance and SSR capabilities built in.

With 617,543 sites already migrated away and the remaining 156,587 domains showing accelerating decline, Handlebars represents a narrowing but high-value modernization window. Explore our full Handlebars dataset to identify enterprise accounts mid-migration.