
Webpack
esbuild
Vite
Parcel
npm
RequireJS
stealjs
Rollup is a module bundler for JavaScript which compiles small pieces of code into a larger piece such as application.

VWO
AB Tasty
Google Analytics
Google Marketing Platform
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Azure DevOps
Micro Focus ALM
A/B testing you'll actually use.
Which is more popular?
Based on our record, rollup.js seems to be more popular. It has been mentioned 68 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | rollupjs.org | optimizely.com |
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| Company | — | Startup from the United States |
| Listed in |
What each product offers, as listed by its team.


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External articles and on-site reviews we used to compare the two products.


Rollup provides much simpler configuration over webpack 4 and has a host of pre-configured plugins that are a breeze to incorporate into your project. Rollup's also the fastest of the build tools period.
Optimizely is a lower cost entry tool for anyone looking to do website testing. While their pricing structure has changed over the years it still is a pretty cost effective solution. It is easy to get tests up and...
Optimizely is more of a personalization tool but you cannot ignore its A/B testing superiority. It helps you put the face of the most appealing site in front of customers. There’s a lot of things that are good in this...
Optimizely is a well known A/B testing and experimentation tool for both web and mobile. It claims to be built for the enterprise with features like roles, permissions, and two-factor authentication while still...
Recommendations tracked on public social media and blogs since March 2021.


This article presents a bunch of ways how to find unused code, remove it, and configure tools and bundler to prevent dead code in the future. Sections for bundler are based on set of Vite, which under the hood delegates to Rollup in... - Source: dev.to / 3 months ago
The reality is simple: minification was never security. It's a size optimization that bundlers like esbuild, Webpack, and Rollup do by default. Variable renaming slows down human readers but LLMs read minified code like you read... - Source: dev.to / 6 months ago
Before addressing the solution, it's useful to contextualize the role of the bundler. In a modern frontend architecture, the bundler (such as webpack, rollup, or vite) has the task of traversing the application's dependency graph,... - Source: dev.to / 10 months ago
Tracking Optimizely since Mar 2021.
When comparing rollup.js and Optimizely, you can also consider the following products.

Webpack is a module bundler. Its main purpose is to bundle JavaScript files for usage in a browser, yet it is also capable of transforming, bundling, or packaging just about any resource or asset.
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Use VWO to tweak, optimize & personalize your website with minimal IT help.
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An extremely fast JavaScript bundler and minifier
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AB Tasty is an all-inclusive platform for conversion rate optimization, personalization, customer activation, and testing.
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Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.
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