Open Source Platforms
Products that follow an open-source model, allowing users to inspect, modify, and enhance the source code.
Updated June 21, 2026
Products that define this theme
A representative set of Feature Management Software products that exemplify Open Source Platforms, curated as a starting point for finding similar software.
Selected from G2's verified user reviews and ratings, then matched to this theme for relevance.
How Did G2 Choose These Open Source Platforms Products?
The 5 products shown represent a defining sample for the "Open Source Platforms" theme within Feature Management Software on G2 — not an exhaustive list. They are a curated starting point for discovering similar software.
- Sourced from products with verified G2 user reviews and ratings.
- Matched to this theme based on each product's described capabilities and fit, ordered by relevance.
- Rankings and inclusion are unbiased and are not influenced by vendor payment.
Refreshed weekly. Last updated: June 21, 2026.
PostHog is the open-source, all-in-one platform that helps engineers build better products. We enable software teams to capture events, perform analytics, record user sessions, conduct...
Unleash is the world's largest and fastest-growing open-source feature flag company. We are on a mission to make life easier for developers. The Unleash Feature Management platform reduces the...
Flagsmith is an open-source feature management platform that lets developers release with confidence. We work with security-conscious organisations across the world to help them securely transition...
GrowthBook is the most popular open source experimentation and feature flagging platform. Created in 2021 , GrowthBook is a modern and highly customizable platform that works with your unique...
DevCycle is a feature management platform built for developers who want the flexibility of open standards combined with the reliability, scalability and security of enterprise-grade SaaS. DevCycle...