Developer Tools · head to head
Backstage vs curl
Backstage
Developer Tools
Open source internal developer portal framework created and open sourced by Spotify
- From
- Free
- Rated
- -
curl
APIs
Command-line tool for transferring data using URLs with wide protocol support
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Backstage backstage is a framework rather than a product: there is no supported turnkey install, so getting to a usable portal means a TypeScript and React project your team owns, hosts and upgrades forever.; curl open-source with no vendor pricing: curl is free and open-source under GPL 3.0; no subscription or licensing costs apply
- They diverge on capability: Backstage covers Software catalogue, curl covers HTTP/HTTPS.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Backstage and curl actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Backstage
- Software catalogue
- Software templates
- TechDocs
- Plugin architecture
- Kubernetes plugin
- Search
- Entity ownership model
- Auth provider integrations
Only in curl
- HTTP/HTTPS
- FTP
- Multiple protocols
- Universal compatibility
- Scripting tools
- Linux support
- MacOS support
- Windows support
What people use each for
The jobs each tool is most often brought in to do.
Backstage
- An engineering organisation past roughly a hundred services where nobody can reliably answer who owns a given service at two in the morningnot curl
- A platform team enforcing golden paths, so a new service is scaffolded with logging, CI and security defaults already wired innot curl
- A company consolidating scattered READMEs and Confluence pages into docs that live beside the code and cannot silently rot unnoticednot curl
- A regulated business that needs an auditable register of every running service, its owner and its data classificationnot curl
curl
- API Developmentnot Backstage
- API Gatewaynot Backstage
- API Testingnot Backstage
- API Documentationnot Backstage
- Microservicesnot Backstage
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Backstage
- Backstage is a framework rather than a product: there is no supported turnkey install, so getting to a usable portal means a TypeScript and React project your team owns, hosts and upgrades forever.
- Upstream releases move quickly and plugin APIs have broken across major versions, so a customised deployment accumulates upgrade debt and teams routinely fall months behind on versions they cannot cheaply catch up on.
- The catalogue is only as good as the YAML descriptors engineers remember to write; without enforcement the register drifts out of date, and a developer portal nobody trusts is abandoned faster than one that never existed.
- Community plugin quality varies sharply, with many unmaintained or pinned to old core versions, so the plugin that made the business case may be the one blocking your next upgrade.
- Spotify Portal, the packaged commercial route, publishes no price at all and is quoted as a custom annual subscription, so the only cost you can actually forecast up front is the self-hosted one, which is the option with the largest hidden staffing bill.
curl
- Open-source with no vendor pricing: curl is free and open-source under GPL 3.0; no subscription or licensing costs apply
- Commercial support costs hidden: site references 'commercial support available' but pricing is not detailed or accessible from homepage
- No SaaS model: curl is a command-line tool and library; costs are limited to optional commercial support contracts (pricing unknown)
- Self-support burden: free software means customers rely on community forums or undisclosed commercial support pricing
Pricing, plan by plan
Backstage
Free- Backstage (open source)Free
- Apache 2.0 licence
- Software catalogue, templates, TechDocs and search
- Full plugin ecosystem
- Spotify Portal for Backstage$undefined/year
- Packaged commercial distribution from Spotify
- Spotify premium plugins including Soundcheck and Insights
- Simplified setup and managed upgrade path
curl
Free- Open SourceFree
- Full curl functionality
- Community support
Which should you pick?
Choose Backstage if
- You need software catalogue.
- You want to start without paying.
- You work on Web, Self-hosted, Linux, Docker, Kubernetes.
- You also want software templates.
Choose curl if
- You need http/https.
- You want to start without paying.
- You work on Linux, MacOS, Windows, Unix, Mobile.
- You also want ftp.
Questions people ask
- Is Backstage or curl better?
- Neither clearly leads. Backstage starts at Free and curl at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Backstage or curl?
- Backstage starts at Free and curl at Free.
- Does Backstage or curl run on more platforms?
- Backstage runs on Web, Self-hosted, Linux, Docker, Kubernetes. curl runs on Linux, MacOS, Windows, Unix, Mobile.
- Can I use Backstage for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Backstage best used for?
- Backstage is most often used for an engineering organisation past roughly a hundred services where nobody can reliably answer who owns a given service at two in the morning, a platform team enforcing golden paths, so a new service is scaffolded with logging, ci and security defaults already wired in, a company consolidating scattered readmes and confluence pages into docs that live beside the code and cannot silently rot unnoticed, a regulated business that needs an auditable register of every running service, its owner and its data classification. Of those, an engineering organisation past roughly a hundred services where nobody can reliably answer who owns a given service at two in the morning and a platform team enforcing golden paths, so a new service is scaffolded with logging, ci and security defaults already wired in are not what curl is typically brought in for.
- What can Backstage do that curl cannot?
- Backstage covers Software catalogue, Software templates, TechDocs, Plugin architecture. curl covers HTTP/HTTPS, FTP, Multiple protocols, Universal compatibility.
Answered from the vendors’ own pages
Backstage: Is Backstage free?
The project is Apache 2.0 with no licence fee. The real cost is engineering time; teams commonly dedicate one to two engineers permanently to running it.
curl: How much does curl cost?
curl is free and open-source software under the GPL 3.0 license. There is no cost to download, use, or modify the software.
SourceBackstage: Do I need to write code to use it?
Yes. Configuring and extending a Backstage application is a TypeScript and React project. This is the single most common misjudgement buyers make.
curl: Is commercial support available for curl?
Yes. The curl website references 'commercial support available,' but pricing and details are not disclosed on the homepage and require visiting the support page.
SourceBackstage: What is Spotify Portal for Backstage?
A commercial distribution from Spotify with premium plugins and support, generally available since October 2025 and sold as a quoted annual subscription with no published price.
curl: Can I sponsor curl financially?
Yes. The curl website offers an option to 'Sponsor curl financially.' Visitors can donate to support curl development, but the donation link must be accessed through the site's support section.
SourceBackstage: Who owns the project?
Spotify created and open sourced it; it is now a CNCF project, so the upstream roadmap is not solely Spotify controlled.
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- curl vs Bazel
- curl vs Argo CD
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- curl vs PocketBase
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- curl vs REST Client VSCode
- curl vs Hoppscotch
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- curl vs Kong Gateway
- curl vs Convoy
- curl vs Directus
- curl vs Moov
- curl vs MX Technologies
- curl vs PubNub
- curl vs Skaleet
- curl vs Svix
- curl vs Synctera
- curl vs Kong