Unleash Reviews & Product Details

I love that Unleash is open source, easy to try before you buy, and provides all the advanced capabilities we need—like advanced rollout strategies, real-time governance, SDKs for every stack, and especially detailed metrics for feature flag exposure. It freed our engineers from maintaining in-house tools, letting us focus on delivering value to customers faster. The support and Slack community are also excellent, providing quick answers and valuable insights. Review collected by and hosted on G2.com.

Honestly, there isn't much to dislike. Our in-house solution worked, but maintaining and evolving it was a drain on engineering resources. With Unleash, we no longer waste time reinventing the wheel or struggling with limited capabilities and lack of documentation. If anything, I would say that for very simple scenarios, building your own might seem cheaper, but for complex use cases like ours, Unleash is much more efficient. Review collected by and hosted on G2.com.

I love how Unleash enables us to manage feature flags and experiments seamlessly across multiple languages and environments. Its API-first approach let us automate provisioning and configuration, while the built-in support for multi-tenancy and constraints makes it ideal for our complex microservice architecture. The ability to extract experimentation data into our warehouse and the robust SDKs across languages have been game-changers for developer productivity and reliability. Review collected by and hosted on G2.com.

At times, running multiple on-prem Unleash instances added operational overhead, especially as our architecture scaled and matured. Migrating to Unleash Cloud presents some challenges, particularly in consolidating environments and ensuring smooth service continuity, but we're optimistic about the benefits this change will bring. Review collected by and hosted on G2.com.

I love how Unleash has brought us stability, scalability, and confidence at Wayfair. The switch from our in-house tool to Unleash solved our scalability and maintenance headaches, and features like Edge, segmentation, and the Admin UI have been game changers. We can now experiment and roll out features safely, recover instantly from issues, and manage thousands of feature flags with ease. The cost savings and reduction in engineering overhead have been huge, and the platform's observability and governance features are essential at our scale. Review collected by and hosted on G2.com.

Initially, we had to use a one-size-fits-all strategy for configuring Unleash, which led to some bottlenecks when all services queried the main server directly. However, adopting Unleash Edge quickly resolved those issues for us. We're also looking forward to leveraging new features like milestones in version 7, which aren't available yet in our current version. Review collected by and hosted on G2.com.

I appreciate Unleash's enterprise-grade security, particularly its fine-grained role-based access control and seamless SAML integration with our corporate LDAP. Its context-aware, dynamic feature toggles enable fast experimentation and safe rollouts. The broad agent support across our complex technology stack, including proxies for single-page applications, made integration smooth. The ability to combine multiple rollout strategies, such as IP-based filtering and A/B testing, has been invaluable. Unleash has allowed us to decouple deployments, perform surgical rollbacks, and scale feature delivery intelligently, enhancing our innovation speed and confidence. Review collected by and hosted on G2.com.

None so far after using it for 3+ years and rolling it out for multiple teams. Review collected by and hosted on G2.com.

We’ve been using the open-source self-hosted version of Unleash for over three years. Before that, we had a very simple in-house solution with many limitations. When searching for a more robust alternative to support our growth, Unleash stood out among the options. The best part is how it allows us to manage dozens of feature flags in a fast and simple way, enabling over 15 tech teams to work independently while implementing their own release strategies. Review collected by and hosted on G2.com.

The main limitation we face today with the open-source version is the inability to create multiple projects to organize and separate our feature flags. This makes it harder to scale the setup as our teams and number of flags grow. Review collected by and hosted on G2.com.

I love how Unleash empowers us to manage feature flags and experimentation across a complex, multi-tenant architecture with multiple programming languages. The API-first approach, robust SDKs for different languages, and the ability to standardize feature flag usage have made it easy for our developers to adopt. It's been especially valuable for running A-B tests, integrating analytics, and safely rolling out or fine-tuning models in production. The move to Unleash Cloud promises to simplify maintenance and centralize our management, which I'm excited about. Review collected by and hosted on G2.com.

One challenge we've encountered is the overhead of managing multiple on-prem Unleash instances, especially before features like progressive constraints were available. Migrating to Unleash Cloud requires careful planning and some custom tooling to ensure a smooth transition without disrupting existing services. While these aren't deal-breakers, they do add some complexity to our workflow. Review collected by and hosted on G2.com.

I liked that they were very down to earth. Was easy to have discussions on capabilities and prices. They were very accommodating in our discussions when it comes to price plans. The company I work for has so many policies and others which makes it hard just to go out and acquire the software. They were very helpful here. We've used the open source for years prior to this and there was no push in us getting an expensive payed plan. They were just trying to help us out to ensure we get the plan that is best suited for us. Which means they're in it for the long run by having happy customers rather than earning a quick buck. Review collected by and hosted on G2.com.

Perhaps just me, we haven't really gotten started with the enterprise version yet, but one thing I miss is having the possibility to add a comment for each time a toggle is changed. So there can be a change log if you want. So if I change the toggle, I can add a comment to why. Review collected by and hosted on G2.com.

Unleash has made our release process much more flexible. Feature flags let us deploy changes safely and roll out features gradually. It has become one of the most essential tools in our development, testing, and release workflow. It is now a part of our daily operations.

The Python and React SDKs integrated smoothly into our code and tests.

The Unleash UI is intuitive and provides all the necessary tools to manage the entire feature flag lifecycle, from creation to cleanup.

The service has been reliable with excellent uptime, and the support team checks in proactively, even though we have not had issues.

Unleash does exactly what we need. It is a simple and reliable feature flag management solution. Review collected by and hosted on G2.com.

I don’t have any major complaints, but if I had to mention something, I’d love more advanced querying capabilities, potentially supported by AI-driven insights. Review collected by and hosted on G2.com.

I have used the feature flags with percentage based category to run our application in shadow/staging mode to ungraded to Production.

- Very easy to set up

- Synergy with Java, Kotlin, Spring-Boot Tech stack integration

- No Config change going from Staging to Production Review collected by and hosted on G2.com.

Nothing very critical, the unleash key has to be set with care in the app's secret storage. Review collected by and hosted on G2.com.

My favourite aspect with Unleash is the quality of documentation, broad set of SDKs, extremely stable runtime and hasslefree upgrade and transition to new versions with a growing set of relevant features. Review collected by and hosted on G2.com.

The breadt of features can be a challenge at first, so feature flags as a general concept need to be analyzed for the organization. The UI in Unleash has grown quite abit over the years, making concept and features more complex to get into. Review collected by and hosted on G2.com.