Sphere Engine vs StackBlitz
Sphere Engine
sphere-engine.com
StackBlitz
stackblitz.comSide by side
| Figure | Sphere Engine | StackBlitz |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Linux | Yes | — |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 8 |
| Spec score · Code Playground Software | 7.4 (#41) | 8.7 (#7) |
| Headquarters | Gdynia, Poland | StackBlitz's privacy policy identifies its headquarters as being in the United States and lists a San Francisco mailing address. |
| Integrations | The modules support RESTful API and webhooks, while widget integration is also available for integrating Sphere Engine into applications. | Its integrations page lists a Figma plugin, a Storybook addon, and a browser userscript that opens GitHub projects in Codeflow. |
| Product | Sphere Engine is a set of APIs and software components for creating coding assessment solutions and online code execution environments. | StackBlitz describes itself as an instant full-stack web IDE for the JavaScript ecosystem. |
| Support | Enterprise subscriptions include 24/7 support, an SLA, and on-demand custom feature development. | The site links to StackBlitz Community, documentation, and Enterprise Sales for support and contact. |
Plans
StackBlitz
- Personal+Price not published
- Enterprise ServerPrice not published
- PersonalFree
- PersonalFree
- Pro$25 a month
- Teams$60 a month
- EnterprisePriced on request
- Enterprise & Self-hostedPriced on request
In their own words
Sphere Engine
Sphere Engine has no write-up on Specifiction yet; its figures are above.
StackBlitz
StackBlitz is a browser-based full-stack web IDE for the JavaScript ecosystem. Its WebContainers run Node.js development environments inside a browser tab, and the service lists millisecond startup and offline work. StackBlitz presents rapid prototyping and coding interviews as use cases. Integrations include a Figma plugin, Storybook addon, and userscript for opening GitHub projects in Codeflow. Viewing and editing projects needs no account, but saving or collaborating requires GitHub. WebContainers depend on SharedArrayBuffer and cross-origin isolation. Enterprise options connect GitHub Enterprise, GitLab, Bitbucket, private npm registries, JFrog Artifactory, and Sonatype Nexus. Enterprise code runs in an isolated browser sandbox with SAML2 single sign-on, an admin portal, and self-hosting on bare metal or in a VPC through Kubernetes. Plans include free access and a 14-day trial; listed plan prices are not provided.