
ConfigCat
Optimizely
Flagsmith
Unleash
Split.io
Growth Book
PractiTest
LaunchDarkly is a powerful development tool which allows software developers to roll out updates and new features.

Slack
Rocket.Chat
Discord
Telegram
Element.io
Zulip
Microsoft Teams
Mattermost is an open source alternative to Slack.
Which is more popular?
Based on our record, Mattermost should be more popular than LaunchDarkly. It has been mentioned 76 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | launchdarkly.com | mattermost.com |
| Pricing | ||
| Company | — | Startup from the United States |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
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
Mattermost is recommended for organizations that prioritize data privacy and security, need extensive customization options, or are looking to integrate a collaboration tool into existing systems. It is also suitable for teams in regulated industries requiring on-premises solutions.
Walkthroughs and reviews on video.
How LaunchDarkly Enables Product Managers to Test in Production
More videos
Mattermost - An Open Source, Self Hosted, Slack Chat Alternative
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using LaunchDarkly and Mattermost. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


LaunchDarkly is another dedicated feature flag management tool that offers extensive features. They support a variety of platforms and languages and boast clients like Microsoft, Atlassian, and Invision. Like Rollout,...
A differentiating factor is the functionality to schedule releases through the console, LaunchDarkly and FeatureFlow have incorporated this into their front end. Another front-end feature of interest is user...
Mattermost is an open-source platform that enables safe collaboration in self-hosted chat programs featuring file sharing, search, and integrations; groups and businesses can use it as an internal chat.
Mattermost uses monolithic architecture, which is tightly coupled and complex to understand. It restricts the scalability of the collaboration tool, which is a limitation for growing businesses. In that case,...
Below is a curated list of the 12 best self-hosted messaging apps like MirrorFly, Mattermost, Zulio, Nextcloud, and Rocket.chat that offer unique collaboration features and lets you take full control of your data.
Recommendations tracked on public social media and blogs since March 2021.


This is a realistic scenario, because Claude, ChatGPT, and Gemini all recommend LaunchDarkly. But when you ask these questions of your agent, the response comes from a single model that was asked just once. It’s subject to the same... - Source: dev.to / 4 months ago
One common runtime control is a feature flag, which is a configurable switch that changes application behavior without requiring a redeploy. In ML systems, feature flags can be used to route users between model versions, limit exposure... - Source: dev.to / 5 months ago
This kind of goes without saying since it's the opposite of the first don't I listed, but it's worth restating and giving some examples. Using tools from third parties means taking advantage of what they have done so you don't have to do... - Source: dev.to / over 2 years ago
Mattermost | Remote (US and Canada) | FT | Multiple roles Mattermost (https://mattermost.com) is an open-core collaboration and workflow automation platform for air-gapped, on-prem and private clouds. Our customers are in defense,... - Source: Hacker News / 14 days ago
The amazing thing is that there is almost always an open-source alternative that is 10x better in many ways, in the case of slack https://mattermost.com/ I'm looking forward for AI to make it very easy to deploy your own tools and walk... - Source: Hacker News / about 2 months ago
How does it compare to MatterMost [1]? [1] https://mattermost.com/. - Source: Hacker News / 5 months ago
When comparing LaunchDarkly and Mattermost, you can also consider the following products.

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

A messaging app for teams who see through the Earth!
Compare Slack to LaunchDarkly or Mattermost:


Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.
Compare Rocket.Chat to LaunchDarkly or Mattermost:

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.
Compare Flagsmith to LaunchDarkly or Mattermost:

Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.
Compare Discord to LaunchDarkly or Mattermost: