Top 12 Open-Source Alternatives to ConfigCat

The top open-source alternatives to ConfigCat are Unleash, LaunchDarkly, and Flagsmith. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Unleash Landing Page
1

Unleash

Open source Feature toggle/flag service. Helps developers decrease their time-to-market and to increase learning through experimentation.
Pricing:
- Open Source
- Freemium
- Free Trial
- $80.0 / Monthly (Pro, "5 users")
#Productivity #Software Engineering #Developer Tools 4 social mentions
LaunchDarkly Landing Page
2

LaunchDarkly

LaunchDarkly is a powerful development tool which allows software developers to roll out updates and new features.
Pricing:
- Open Source
#Feature Flags #Developer Tools #A/B Testing 36 social mentions
Flagsmith Landing Page
3

Flagsmith

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.
Pricing:
- Open Source
- Freemium
- Free Trial
#Feature Flags #Developer Tools #Configuration Management 13 social mentions
Split.io Landing Page
4

Split.io

In a world where product development teams are pressured to do more with less, Split’s Feature Data Platform™ gives you the confidence to move fast without breaking things.
Pricing:
- Open Source
#Feature Flags #Developer Tools #Release Management 12 social mentions
Rollout Landing Page
5

Rollout

Fix or prevent critical bugs while your app is live.
Pricing:
- Open Source
#Developer Tools #Feature Flags #Release Management
FlipperCloud.io Landing Page
6

FlipperCloud.io

Control Your Code. Instantly. Without configuring or deploying it.
Pricing:
- Open Source
- Paid
- Free Trial
- $20.0 / Monthly (per seat)
#Developer Tools #Release Management #Feature Flags
Growth Book Landing Page
7

Growth Book

The Open Source A/B Testing Platform
Pricing:
- Open Source
#A/B Testing #Conversion Optimization #Web Analytics 1 social mentions
Next.js Landing Page
8

Next.js

A small framework for server-rendered universal JavaScript apps
Pricing:
- Open Source
#Developer Tools #Web Frameworks #JavaScript Framework 919 social mentions
RxDB Landing Page
9

RxDB

A fast, offline-first, reactive Database for JavaScript Applications
Pricing:
- Open Source
#NoSQL Databases #Databases #Developer Tools 10 social mentions
FeatureHub Landing Page
10

FeatureHub

Cloud native feature flags, A/B testing and remote configuration service
Pricing:
- Open Source
- Paid
- Free Trial
- $4.99 / Monthly (1 user)
#Developer Tools #A/B Testing #Feature Flags
Ansible Landing Page
11

Ansible

Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
Pricing:
- Open Source
#DevOps Tools #IT Automation #Build And Deployment Automation 9 social mentions
Drayman Landing Page
12

Drayman

Server-side component framework
Pricing:
- Open Source
#Framework #JavaScript #Nodejs