Flagsmith vs Unleash
Flagsmith
flagsmith.comUnleash
getunleash.ioSide by side
| Figure | Flagsmith | Unleash |
|---|---|---|
| Price from | $40/mo | $6.25/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | Yes | Yes |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 8 | 7 |
| Spec score · Release Management Software | 9.1 (#2) | 8.6 (#4) |
| Spec score · Feature Flag Software | 9.1 (#4) | 8.7 (#8) |
| Deployment | Flagsmith offers hosted cloud, private cloud, and self-hosted deployment options. | Unleash Enterprise is offered as hosted cloud, self-hosted, or hybrid, with a hosted private instance available as an Enterprise add-on. |
| Documentation and support | Documentation covers quickstarts, concepts, SDKs, REST API, integrations, administration, self-hosting, release notes and contribution guidance; support channels include email/helpdesk, knowledge base, chat and Discord. | The documentation includes quickstarts, tutorials, guides, Learning Lab content, SDK references, API references, integration pages and release notes. |
| Experimentation | Flagsmith supports A/B and multivariate testing and reports experiment impact metrics. | Variants carry weights and payloads for A/B or multivariate experiments with user stickiness. |
| Feature flags | Flags can be boolean or multivariate and decouple deployment from release. | Flags belong to projects and can have different activation strategies in each environment. |
| Governance | Scale-Up includes SAML/SSO, roles, permissions, change requests, and audit logs. | Enterprise provides project and custom roles, user groups, change-request approvals and audit trails. |
| Headquarters | London, England | Oslo, Norway |
| Integrations | Native integrations include Amplitude, Datadog, Dynatrace, GitHub, GitLab, Grafana, Jira, Mixpanel, New Relic, Segment, Sentry, Slack, Terraform and warehouse tools. | Official integrations include Datadog, Jira Cloud, Microsoft Teams, ServiceNow, Slack and generic webhooks; community integrations include Fastify, Quarkus, Vue and New Relic. |
| License | The public Flagsmith repository is identified as BSD-3-Clause licensed. | The main source repository uses AGPLv3 from version 8 onward; earlier source versions used Apache 2.0 and official open-source Docker images remain Apache 2.0. |
| Rating on G2 | 4.8 out of 5 from 37 reviews | 4.7 out of 5 from 137 reviews. |
| Rating on GetApp | 4.7 out of 5 from 3 reviews | 4.8 out of 5 from 6 reviews. |
| Rating on TrustRadius | 10 out of 10 from 1 review | 10 out of 10 from 4 reviews. |
| SDK coverage | Documentation lists client and server SDKs for JavaScript, React Native, .NET, Flutter, Go, Java, Kotlin/Android, Node.js, PHP, Python, Ruby, Spring Boot and Swift/iOS. | Documentation lists server SDKs for Node.js, Java, Go, Rust, Ruby, Python, .NET and PHP plus frontend SDKs for JavaScript, React, Next.js, Vue, iOS, Android and Flutter. |
| Security | The maker states that Flagsmith is SOC 2 Type 2 accredited and that its self-hosted instance supports HIPAA, FedRAMP, and ISO 27001. | The pricing page lists SOC 2 Type II and GDPR compliance, SSO via SAML 2.0 or OpenID Connect, role-based access control, and audit log retention of up to two years. |
| Self-hosting | Self-hosted deployments run on customer infrastructure using Docker, Kubernetes or other orchestration tools, including AWS, GCP, Azure and DigitalOcean. | Self-hosted deployment is documented through Docker Compose or Docker CLI with PostgreSQL. |
Plans
Flagsmith
- FreeFree
- Start-Up$40 a month
- Start-Up (annual billing)$40 a month
- Start-Up (monthly billing)$45 a month
- Scale-Up$250 a month
- Scale-Up (annual billing)$250 a month
- Scale-Up (monthly billing)$300 a month
- EnterprisePriced on request
Unleash
- Open SourceFree
- Unleash Open SourceFree
- Cloud-hosted Pay-as-you-go$75 a month
- Pay-As-You-Go$75 a month
- Self-hosted Pay-as-you-go$75 a year
- Custom EnterprisePriced on request
- Enterprise customPriced on request
In their own words
Flagsmith
Flagsmith manages feature flags and remote configuration for web, mobile, and server-side applications. Teams can target releases by environment, individual user, segment, or percentage, and split users across variations for A/B and multivariate tests. Remote configuration lets teams change properties such as text, colors, and behavior without deploying new code. Deployment options include hosted cloud, private cloud, and self-hosted. Its listed integrations include Amplitude, Datadog, GitHub, GitLab, Grafana, Jira, Mixpanel, OpenFeature, Segment, Sentry, Slack, and Terraform; environment-level webhooks can send events to a team's infrastructure. The maker says core feature-flag functionality is open source and most of the product uses the BSD-3 licence. The Free plan includes 50,000 monthly requests and one team member; after exceeding the request limit, users have seven days to upgrade before action is taken. Paid plans start at $40 a month, billed 12 months paid up front. Platforms include Android, API, iOS, Linux, macOS, self-hosted, web, and Windows.
Unleash
Unleash is a feature management platform for controlling software behavior and releases in production without redeploying code. Teams can stage progressive rollouts, roll back instantly, apply release templates, and use kill switches. Its experimentation tools include A/B/n testing, flag variants, user segmentation, and stickiness. Flags are evaluated in SDKs or at the edge rather than on the Unleash server. The service lists more than 25 SDKs, including options for Node.js, Java, Go, Python,.NET, React, Android, and iOS. Listed integrations include Slack, Teams, Datadog, Jira, webhooks, and Admin, Frontend, and Client APIs. The free Open Source instance allows no seat limit but is restricted to one project, two environments, and 5,000 flags; it lacks SSO, SCIM, granular RBAC, change-request approvals, and a support SLA. Pay-As-You-Go costs $75 a month, billed monthly, and has a 14-day trial without a credit card. Enterprise can be hosted, self-hosted, or hybrid, with US or EU data residency available.