Flagsmith Alternatives (September 2025)

ConfigCat is a feature flag service with unlimited team size, awesome support, and a reasonable price tag that takes 10 mins to learn.

Split is a feature delivery platform that powers feature flag management, software experimentation, and continuous delivery.

DevCycle is a Feature Flag Management platform built for modern development teams. Deploy faster, reduce risk, and build maintainable code at scale.

Maximize the value of every software feature through automation and feature management.

Toggly makes it easier for software developers to build better software faster by making it easy to test, release, and measure features without the risk of downtime or other production impacts.

Tggl lets developers ship code faster and safer with feature flags and makes product teams more efficient with release management

Build, deploy and manage your applications on any cloud or your own servers.

Harness is a modern software delivery platform that allows engineers and DevOps to build, test, deploy, and verify software, on-demand.

Pulumi's open source infrastructure as code SDK enables you to create, deploy, and manage infrastructure on any cloud, using your favorite languages.

Innovate your whole product lifecycle with higher quality releases, safer tests, and faster feature validations.

GrowthBook is an open source platform that gives any company the power of a customized feature flagging and A/B testing system.

Vercel's Frontend Cloud gives developers the frameworks, workflows, and infrastructure to build a faster, more personalized Web.

Private cloud A/B testing tool that offers collaboration features and a group sequential testing engine that speeds up experiments by 20%-80%.

Mockoon is the easiest and quickest way to run mock REST API servers. No remote deployment, no account required, free, open source and cross-platform.

Travis CI is the most simple and flexible ci/cd tool available today. Find out how Travis CI can help with continuous integration and continuous delivery.

PostHog is the only all-in-one platform for product analytics, feature flags, session replays, experiments, and surveys that's built for developers.

Our platform as a service (PaaS) gives development teams control and peace of mind while accelerating the time to build and deploy applications.

Doppler redefines how engineering teams handle secrets management. Experience enhanced security, agility, and automation with our cloud platform. Start your free trial.

Taplytics provides zero bloat, cross-platform AB Testing solutions that power the experiences within today's leading apps and websites. Learn more.

Easily unify the management, security, and governance of both synchronous and asynchronous ecosystems with the leading open source API Management platform.

Traefik Mesh is an open source service mesh, easy to configure that allows visibility and management of the traffic flows inside any Kubernetes cluster.

Push. Build. Deploy! Instantly build and ship code anywhere in one consistent process for your entire team. DeployBot's code deployment tools work with your existing git repository to deploy new code fast, and with zero downtime. These are the continuous deployment tools you're looking for.

Svix is the enterprise ready webhook service. Build a state of the art webhook platform in minutes with our hosted webhook SaaS or our open source project. Don't reinvent the wheel, use webhooks as a service.

The all-in-one flexible monitoring solution that covers networks, servers, applications, UX, distributed environments and more!

A powerful CMS, BaaS, and more. Power any project with Directus – a composable data platform to easily create and deploy data-rich apps.

A secure cloud management platform for automation, orchestration, cost and usage monitoring of public and private clouds, hypervisors and container hosts. Provides multi-cloud RBAC. Enables self service provisioning. Cost analytics and cloud spending optimization

Get the best continuous integration and delivery (CI/CD) for any platform, in our cloud or on your own infrastructure, for free.

Learn how forward-thinking product teams fuel data-driven growth through Apptimize's Mobile A/B Testing and Release Management platform.

Novu empowers developers and product teams to collaborate seamlessly on notification management. Its unified platform provides centralized content, type-safe schemas, and reusable components, facilitating efficient workflows. With code-first and no-code tools, teams can easily customize and deploy notifications across multiple channels like email, SMS, push, chat, and in-app. Novu enhances communication, reduces friction, and ensures reliable, scalable, and personalized user experiences while maintaining full visibility and control over notifications.

Confluent makes it easy to connect your apps, data systems, and entire business with secure, scalable, fully managed Kafka and real-time data streaming, processing, and analytics.

Heroku is a platform as a service (PaaS) that enables developers to build, run, and operate applications entirely in the cloud.

Gitea - Git with a cup of tea! Painless self-hosted all-in-one software development service, including Git hosting, code review, team collaboration, package registry and CI/CD

Heroku is a platform as a service (PaaS) that enables developers to build, run, and operate applications entirely in the cloud.

Multi-cloud continuous delivery for the enterprise

An open-source Backend-as-a-Service stack for web & mobile applications, based on RESTful APIs.

Strapi is the next-gen headless CMS, open-source, javascript, enabling content-rich experiences to be created, managed and exposed to any digital device.

Argonaut automates deployments of infrastructure and applications to your cloud account. Autogenerate and collaborate with your team on Terraform, CI/CD and App Deployment Configs in an instant.

Release from Digital.ai is an enterprise-level release management tool designed to automate and organize software delivery and releases.

Spacelift helps orchestrate your entire infrastructure pipeline (Terraform, OpenTofu, Ansible and more) to deliver secure, cost-effective, and high-performance infrastructure.

Connected systems make you faster, more efficient, and highly competitive. In today’s world of fast moving business, connectivity is power.

Statsig is a modern feature management and experimentation platform that empowers teams to 10x their experimentation velocity, shipping every feature in a data-driven way.

Nullstone is an Internal Developer Platform to improve developer efficiency for teams using major cloud providers.

Use the CyberPanel web hosting control panel to easily deploy PHP-based applications on the cloud with one-click staging, transfer and automated backups.

A Kubernetes-native open-source framework for building continuous integration and delivery (CI/CD) pipelines to build, test, and deploy software.

Secure your private business network with a self-hosted VPN, Access Server, ideal for cloud or on-premise setups. Free with 2 simultaneous VPN connections.

The easiest way to add authentication and user management to your application. API-first & purpose-built for developers. Get started for free.

Appwrite is an open-source platform for building applications at any scale, using your preferred programming languages and tools.

Render is a unified cloud to build and run all your apps and websites with free TLS certificates, global CDN, private networks and auto deploys from Git.

Automated, integrated enterprise application release automation, powering deployments to thousands of customer environments worldwide.

An open source Kubernetes Platform to manage enterprise-grade Kubernetes across hybrid cloud, multi-cloud and edge. Get started for free!

Our API Management platform is fast, scalable, modern. Including an open source API Gateway, Analytics, Dev Portal and Dashboard.

We're the experience optimization partners pushing brave ideas from the inside out. The only digital experience platform you need.

A unified browser-based workspace that offers secure access to company files and software, including cloud-based and legacy web and SaaS applications.

VWO Testing, part of VWO Platform, helps you and run A/B, split, multivariate, and feature tests to optimize user experience & increase conversion rates across web, mobile, servers, and other devices.

The only free, fully open source and self-hosted WordPress plugin for maintaining multiple sites from one location.

Learn about Azure Cloud Services, which helps you deploy and scale powerful cloud applications and APIs. Supports Java, Node.js, PHP, Python, .NET, and more.

KrakenD is a high-performance Open Source API Gateway that enables you to build scalable and resilient microservices architectures.

Atatus is a full-stack observability tool that let you identify the performance bottlenecks and helps you optimize your application at the right time. Try it for free!!

Enjoy fast and painless content delivery to any channel with our headless CMS platform.

Manage massive fleets of small IoT Linux devices with balena's IoT management cloud platform. Your first 10 devices are full-featured and always free. Develop, deploy, manage and scale your IoT fleet with balena.

CloudConnexa is an easy-to-deploy cloud VPN service that takes the complexity & high cost out of managing a secure network for a business.

WireMock is a tool for building mock APIs. API mocking enables you build stable, predictable development environments when the APIs you depend on are unreliable or don’t exist.

Countly is the #1 privacy-led product analytics offering a self-hosted or private cloud solution for your mobile, web, and desktop applications.

Bunnyshell is an Environment as a Service platform that enables developers to instantly spin up dev environments for any task on Kubernetes and develop remotely.

BugSnag is an error monitoring and reporting software with best-in-class functionality for mobile apps. Our tool alerts users of bugs, errors & more. Free trial!

PingAccess allows organizations to protect and centrally manage access to web apps, APIs, and other resources.

Powerful cloud-based test automation platform that lets you automate tests for web, mobile, desktop apps, and APIs in minutes. Sign up now!

Webiny is an open source serverless CMS that offers you all the enterprise-grade functionalities, while keeping your data within the security perimeter of your own infrastructure

API integration Platform-as-a-Service (iPaaS) provides capabilities offered by ESBs, data integration systems, API management tools and B2B gateways.

Keygen is a powerful software licensing API for desktop apps, on-premise software and other software products written in C++, C#, Swift, Java, Kotlin, Node and more.

k6 is an open-source tool and cloud service that makes load testing easy for developers and QA engineers.

Switch to a better way of managing multiple WordPress websites from one dashboard.Get one-click updates, rock-solid security, and fast, reliable backups with

Developer APIs / SDKs for enterprise-ready features like Single Sign-On (SSO/SAML), Passwordless Authentication, Directory Sync (SCIM), Audit Trail (SIEM), and more. Get started for free.

Helping brands master Mobile App Experiences (MAX) to engage customers and win their loyalty. Learn more.

Build and deploy scalable containerized apps written in any language (like Go, Python, Java, Node.js, .NET, and Ruby) on a fully managed platform.

Understand user experiences deeply by analyzing the behavior of your mobile app users. Find ideas to reduce churn and improve app conversions with mobile app session recordings and heatmaps.

Build invincible apps with Temporal's open-source durable execution platform to guarantee successful execution, even in the presence of failures.

Developer-first software delivery toolkit to manage code quality, ci time, merge automation, and flaky tests.

Gitcolony is a collaborative platform for software developers to perform peer code reviews. Gitcolony makes code reviews actually happen in an efficient and amusing way.

Managed Service Providers: Get white-labeled MSSP-hosted security, wireless management, and analytics.

dscout’s experience research platform uses a mobile app and +100K eager participants to efficiently capture in-the-moment video and make insights easy to…

BlazeMeter is your complete continuous testing platform. Get your apps ready for any device & any situation, all in one place with the premier load testing

Improve developer experience with OpsLevel – the internal developer portal that brings access to tools, knowledge, and operational tasks together under one roof. Give your team a developer portal today so they can focus on building and shipping code, not operational red tape.

Free open source enterprise distributed VPN server. Virtualize your private networks across datacenters and provide simple remote access in minutes.

Reimagine your application connectivity and API management with Traefik's unmatched approach to cloud native.

Streamline your mobile development process with Bitrise. The Mobile DevOps platform that helps you build, test, and deploy your apps quickly and reliably.

Codefresh has everything you need to deliver software, providing a foundation for growth with modern CI, CD, GitOps, and more while integrating with your favorite tools.

Effortlessly manage and secure mobile devices with our EMM SaaS platform. Simplify mobile device management, provisioning, deployment, and security.

IBM API Connect is software to rapidly create, secure and manage APIs. IBM API Connect can be deployed in any Red Hat OpenShift environment. It’s also available as SaaS in a shared or dedicated instance, and as part of IBM Cloud Pak for Integration.

Gearset is the only platform you need for unparalleled deployment success, continuous delivery, automated testing and backups.

Open-source self-hosted alternative to Vercel, Netlify, Raiway.app, Render or Heroku running on Kubernetes clusters.

Simplify content orchestration, streamline and unify the developer workflow, and enable website speed & agility for your Enterprise teams with our platform.

GoCD is an open source build and release tool from Thoughtworks. GoCD supports modern infrastructure and helps enterprise businesses get software delivered faster, safer, and more reliably.

Remote desktop software with direct and cloud connection. Self-hosted server available. Active Directory support.

Jenkins – an open source automation server which enables developers around the world to reliably build, test, and deploy their software

Im trying out #figpii, the all-in-one conversion optimization platform sign up to get AB testing, heatmaps, video recording, and online pollings

Host, run, and code Python in the cloud: PythonAnywhere

N-central gives mature MSPs & IT pros the edge to manage, automate, and orchestrate at scale. Browse the ultimate RMM platform built for the new era of IT.

An easy-to-use test management tool to manage all your manual and automated test cases and runs in a single place.