Two good tools, built for different scopes
Both work with Kubernetes. The real question is whether you want a portal that points at your tools, or a platform that does the work.
Backstage is the leading open-source developer portal: Spotify's framework for a software catalog, scaffolder templates, TechDocs and a rich plugin ecosystem.
It is a framework you staff a team to build and run: you write plugins and integrate every backend. And it is a portal. It surfaces and links to your tools; it doesn't provision or deploy anything itself.
- A framework you build and maintain
- Visualizes and links, doesn't execute
- Scaffolds repos, not environments
- Plugins to staff and upgrade
Atmosly is an internal developer platform for Kubernetes. It provisions clusters and cloud resources through guardrails, ships code with visual CI/CD and GitOps, and gives developers governed environments without a ticket.
It is fully managed and agent-based, with no self-hosted upgrades to chase. The SquareOps services team can implement and run it for you.
- Governed provisioning for clusters and resources
- Visual CI/CD and native GitOps
- Preview environments and cloning
- Fully managed, zero upgrade toil
Backstage shows the platform. Atmosly is the platform.
Instead of a catalog that points at other tools, Atmosly provisions infrastructure, deploys code and hands developers environments directly, with no portal to build and run.
Provisioning that runs, not a template that hands off
Backstage scaffolds a repo and stops. Atmosly creates the EKS, GKE or AKS cluster, node groups, add-ons and databases from a catalog, through the guardrail flow you design.
- Create or import any cluster, public or private
- Cost caps, region and instance allow-lists on every request
- Auto-approve under threshold, one-click revert
One pipeline from commit to production
Point Atmosly at a service that is already running. It packages it as a blueprint and wires a full pipeline around it, with GitOps sync, approval gates and one-click rollback.
- Visual editor or YAML, same engine
- Multi-stage promotion with approvals and audit
- Coexists with ArgoCD, Jenkins and GitHub Actions
Developers get environments without filing tickets
Every PR gets its own governed environment with policies inherited from prod. Clone a full stack for a new tenant or region, or install a vetted Helm chart with your defaults pre-applied.
- Preview environment per PR, auto-expires on merge
- Clone services, config and datastores in one step
- Curated Helm marketplace with pinned versions
Backstage vs Atmosly, capability by capability
We kept Backstage's genuine wins in the table. They're marked so you can see them at a glance.
Backstage's strengths are real for the job it's built for: catalog, docs and an open ecosystem. Atmosly's case is that it does the provisioning and delivery work, and you don't have to run it.
Which one is right for your team?
It depends on scope, and on who you want running the platform.
- You want a fully custom developer portal
- You have a platform team to build and run it
- A unified catalog across many tools is the goal
- You prefer assembling best-of-breed backends
- Open source and bespoke is a requirement
- You want provisioning and delivery to run from one platform
- You'd rather not spend engineer-weeks self-hosting a portal
- Developers need environments without filing tickets
- Guardrails and one audit trail matter across clusters
- You'd like a partner (SquareOps) to implement and run it
If you want a fully custom developer portal and have a platform team to build and run it, Backstage is the standard. If you want a platform that provisions and deploys without building a portal first, that's Atmosly.
Connect a cluster freeFrom Backstage to Atmosly in an afternoon
No big-bang migration. Connect read-only, see value first, and adopt the rest at your own pace, keeping the GitOps and Helm you already run.
Rather not do it yourself? The SquareOps services team can run the migration and day-2 operations for you.
Managed Kubernetes servicesWhat teams comparing Backstage ask
Not covered? An engineer replies within one business day.
consult@squareops.comAtmosly is an internal developer platform that executes. It provisions infrastructure and deploys code directly, rather than cataloging and linking to other tools.
No. Capabilities are built in and managed, so there is no portal framework or plugin set to staff and keep running.
Yes. Every service shows its owner, pipeline, environments and current state, read from what is running rather than maintained by hand.
Backstage is a build-it-yourself framework. Atmosly works out of the box and is fully managed.
Not very, and it is incremental. Connect a cluster read-only, ship one workload through an Atmosly pipeline, then adopt environments and guardrails one capability at a time. The SquareOps services team can run the migration for you.
Any conformant Kubernetes cluster: EKS, GKE, AKS or self-managed, public or private. You import the cluster you already run, read-only, in minutes.
No. It runs on your own clusters on standard Kubernetes, Helm and Git, so what you build stays portable.
It is fully managed and agent-based. There is no control plane for you to host, patch or upgrade, and SquareOps can run day-2 operations for you.