Side by side
Contentstack vs KeystoneJS
Both stand on headless cms. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidAPIExtension+2
Visit Contentstack 
Free plan APISelf-hostedWeb
KeystoneJS combines a schema-driven CMS with backend capabilities, GraphQL, rich-text editing, and configurable permissions. Its free plan and flexible hosting suit developers, but migration management and database security policies remain outside Keystone.
Visit KeystoneJSThe facts
| Contentstack | KeystoneJS | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | No | Not published |
| Runs on | Android, API, Extension, iPhone, Web | API, Self-hosted, Web |
| Lowest paid plan | Build: $29 a month | Free or on request |
| Plans published | 4 | 1 |
| Maker | Contentstack | KeystoneJS |
| Website | contentstack.com | keystonejs.com |
| On headless cms | #16 of 34 | #20 of 34 |
Contentstack: what it does well
KeystoneJS: what it does well
- Free forever and open source
- Generates GraphQL API and management UI
- Custom role permissions for fields and operations
- Supports cloud or self-hosted deployment
- Integrates with external APIs and microservices
What to know first
- No content localization
- No built-in content preview
- No database-level security policies
- Requires Node.js 20.19 or newer
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