
rollup.js
JSPM
RequireJS
npm
Webpack
Ender
GNU Make
Futuristic JavaScript dependency loader and builder. Speeds up application load times. Works with ES6, CommonJS, AMD, CSS, LESS and more. Simplifies modular workflows.

LaunchDarkly
ConfigCat
Unleash
Split.io
Growth Book
Flagship.io
DevCycle
Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

Which is more popular?
Based on our record, Flagsmith seems to be more popular. It has been mentioned 13 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | stealjs.com | flagsmith.com |
| Pricing | — | |
| Company | — | 2018 |
| Listed in |
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BlogBackSign inBlogThe 8 best free and open-source feature flag servicesPosted byThe best open-source feature flag tools1. PostHogWhat is PostHog?Supported librariesHow much does it cost?2. UnleashWhat is...
Recommendations tracked on public social media and blogs since March 2021.


Tracking stealjs since Mar 2021.
Considering all these points, the team at Flagsmith has developed a feature flag management platform Flagsmith and made it open source. The core functionality is open and you can check out the GitHub repository here. I have utilized and... - Source: dev.to / over 2 years ago
Flagsmith - Release features with confidence; manage feature flags across web, mobile, and server side applications. Use our hosted API, deploy to your own private cloud, or run on-premise. - Source: dev.to / almost 4 years ago
Flagsmith is written in Django and is open source as well: https://flagsmith.com. Source: about 4 years ago
When comparing stealjs and Flagsmith, you can also consider the following products.

Rollup is a module bundler for JavaScript which compiles small pieces of code into a larger piece such as application.
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LaunchDarkly is a powerful development tool which allows software developers to roll out updates and new features.
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Front End Package Manager, Frontend Development, and Javascript
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ConfigCat is a developer-centric feature flag service with unlimited team size, awesome support, and a reasonable price tag.
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RequireJS is a JavaScript file and module loader.
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Unleash is an open-source feature management platform. We are private, secure, and ready for the most complex setups out of the box.
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