Best Sphere Engine Alternatives in 2026
Updated
20 apps from code playground software ranked against Sphere Engine on the same published basis.
- 1Sphere Engine vs Replit
- 2Sphere Engine vs Playcode
- 3Sphere Engine vs JDoodle
- 4Sphere Engine vs CodeHS
- 5Sphere Engine vs OneCompiler
- 6Sphere Engine vs Scratch
- 7Sphere Engine vs CodePad
- 8Sphere Engine vs CodePen
- 9Sphere Engine vs Google Colab
- 10Sphere Engine vs JSFiddle
- 11Sphere Engine vs Observable
- 12Sphere Engine vs StackBlitz
- 13Sphere Engine vs Val Town
- 14Sphere Engine vs Web Maker
- 15Sphere Engine vs Cloudflare Workers Playground
- 16Sphere Engine vs Paiza.IO
- 17Sphere Engine vs CodeSandbox
- 18Sphere Engine vs RunJS
- 19Sphere Engine vs JS Bin
- 20Sphere Engine vs Dabblet
Sphere Engine alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Replit | 7.7 | Free plan | $18/mo | Android, iOS, Linux, Mac, Web, Windows |
| 2 | Playcode | 7.5 | Free plan | $25/mo | Android, iOS, Linux, Mac, Web, Windows |
| 3 | JDoodle | 7.3 | Free plan | — | Android, API, Browser, iOS, Web |
| 4 | CodeHS | 7.2 | Free plan | — | Android, iOS, Web |
| 5 | OneCompiler | 7.1 | Free plan | — | Android, Web |
| 6 | Scratch | 7.1 | Free plan | $2.92/mo | Android, Mac, Web, Windows |
| 7 | CodePad | 6.8 | Free plan | Free | iOS, Web |
| 8 | CodePen | 6.8 | Free plan | $8/mo | API, Web |
| 9 | Google Colab | 6.8 | Free plan | — | API, Browser, Web |
| 10 | JSFiddle | 6.8 | Free plan | €8/mo | API, Web |
| 11 | Observable | 6.8 | Free plan | $2,225/mo | self-hosted, Web |
| 12 | StackBlitz | 6.8 | Free plan | Free | API, self-hosted, Web |
| 13 | Val Town | 6.8 | Free plan | $21/mo | API, Web |
| 14 | Web Maker | 6.8 | Free plan | $4/mo | Browser, Web |
| 15 | Cloudflare Workers Playground | 6.6 | Free plan | Free | Web |
| 16 | Paiza.IO | 6.4 | Free plan | Free | Web |
| 17 | CodeSandbox | 6.3 | No | — | Web, iOS |
| 18 | RunJS | 6.3 | No | — | Linux, Mac, Windows |
| 19 | JS Bin | 6.2 | No | — | API, self-hosted, Web |
| 20 | Dabblet | 6.0 | No | — | Web |
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Questions about Sphere Engine alternatives
What is the best alternative to Sphere Engine?
Replit, number 1 in code playground software with a score of 7.7 out of 10. The others here: Playcode, JDoodle, CodeHS and 16 more.
What is the best free alternative to Sphere Engine?
Replit is the best-ranked alternative with a free plan. 16 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on.