
LaunchDarkly
ConfigCat
Unleash
Split.io
Growth Book
DevCycle
Flagship.io
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.

Canny.io
Product Hunt
IdeaBuddy
IdeaPush
Ideas for dev
Vote Feature
Discover and validate side project ideas. Vote 'Want!' to show demand, track progress, and get notified when ideas ship.

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.
|
|
|
|
|---|---|---|
| Website | flagsmith.com | urur.dev |
| Pricing | ||
| Platforms | — | |
| Company | 2018 | Startup from Japan · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Flagsmith yet.
Stop building things nobody wants. urur.dev is an idea validation platform for indie developers. Post your side project idea and let the community vote “Want!” to reveal real demand. How it works Post your idea (no signup required to browse) The community votes “Want!” on ideas they’d actually...
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Flagsmith and urur.dev.
urur.dev's answer:
urur.dev focuses on one thing: validating ideas before you build. Unlike feature request tools (Canny) or launch platforms (Product Hunt), urur.dev lets you test demand at the idea stage — before writing a single line of code. Browse freely, sign in to vote and engage.
urur.dev's answer:
It's simple and free. No signup required to browse ideas. Sign in to vote "Want!" and track ideas you care about. Post your idea, share the link, and see if real people want it — validation in minutes, not months.
urur.dev's answer:
Indie developers and solo founders who build side projects. People who've wasted time building something nobody wanted and don't want to make that mistake again.
urur.dev's answer:
I spent 6 months building a side project nobody wanted. Twice. I realized the problem wasn't my code — it was building without validation. So I created urur.dev — the name comes from "uru uru" (売る売る), Japanese for "sell sell." The idea is simple: find your customers before you build, not after. A place where you can test if anyone actually wants your idea before you invest your nights and weekends building it.
urur.dev's answer:
HonoX (Hono + Islands architecture), Cloudflare Pages, Supabase (PostgreSQL + Auth), Vite, Tailwind CSS, and Resend for email notifications.
Share your experience with using Flagsmith and urur.dev. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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...
We have no reviews of urur.dev yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 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: over 4 years ago
Tracking urur.dev since Feb 2026.
When comparing Flagsmith and urur.dev, you can also consider the following products.

LaunchDarkly is a powerful development tool which allows software developers to roll out updates and new features.
Compare LaunchDarkly to Flagsmith or urur.dev:

Canny helps you collect and organize feature requests to better understand customer needs and prioritize your roadmap.
Compare Canny.io to Flagsmith or urur.dev:

ConfigCat is a developer-centric feature flag service with unlimited team size, awesome support, and a reasonable price tag.
Compare ConfigCat to Flagsmith or urur.dev:

A website that lets users share and discover new products
Compare Product Hunt to Flagsmith or urur.dev:

Unleash is an open-source feature management platform. We are private, secure, and ready for the most complex setups out of the box.
Compare Unleash to Flagsmith or urur.dev:
