# curl vs Fiddler

**Leader by Vioscale score:** curl

| Attribute | curl | Fiddler |
|---|---|---|
| **Vioscale score** | 70.8 (50% (medium)) | 48.8 (60% (medium)) |
| activity.commits_last_30d | 100 | - |
| adoption.dependent_repos | 3,409 | - |
| adoption.github_stars | 42,687 | - |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true}` |
| description.long | An open-source solution available as both a command-line tool and embedded library, enabling network data transmission across billions of devices and applications worldwide. | A web debugging proxy that captures, inspects, and modifies HTTP/HTTPS traffic to help developers troubleshoot application problems when logs across systems are conflicting or unclear |
| features.capabilities | `{"api_docs":true,"rest_client":true,"ci_integration":true,"automated_testing":true}` | `{"mock_server":true,"rest_client":true,"ci_integration":true}` |
| language.primary | C | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true,"ios":true,"linux":true,"windows":true}` | `{"mac":true,"linux":true,"windows":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://curl.se/","retrievedAt":"2026-08-14T08:35:51.639Z"}` | `{"freeTier":true,"sourceUrl":"https://www.telerik.com/fiddler","retrievedAt":"2026-08-14T08:35:46.544Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | freemium |
| pricing.price_level | free | low |
| pricing.transparent | yes | no |
| release.cadence_days | 49 | - |
| release.history | `[{"url":"https://github.com/curl/curl/releases/tag/curl-8_21_0","date":"2026-06-24T06:03:04Z","type":"stable","version":"curl-8_21_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_20_0","date":"2026-04-29T06:31:23Z","type":"stable","version":"curl-8_20_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_19_0","date":"2026-03-11T06:52:50Z","type":"stable","version":"curl-8_19_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_18_0","date":"2026-01-07T07:03:41Z","type":"stable","version":"curl-8_18_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_17_0","date":"2025-11-05T07:18:19Z","type":"stable","version":"curl-8_17_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_16_0","date":"2025-09-10T05:48:58Z","type":"stable","version":"curl-8_16_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_15_0","date":"2025-07-16T06:30:51Z","type":"stable","version":"curl-8_15_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_14_1","date":"2025-06-04T05:58:45Z","type":"stable","version":"curl-8_14_1"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_14_0","date":"2025-05-28T05:47:27Z","type":"stable","version":"curl-8_14_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_13_0","date":"2025-04-02T05:56:33Z","type":"stable","version":"curl-8_13_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_12_1","date":"2025-02-13T07:22:05Z","type":"stable","version":"curl-8_12_1"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_12_0","date":"2025-02-05T08:18:37Z","type":"stable","version":"curl-8_12_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_11_1","date":"2024-12-11T07:17:04Z","type":"stable","version":"curl-8_11_1"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_11_0","date":"2024-11-06T07:18:25Z","type":"stable","version":"curl-8_11_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_10_1","date":"2024-09-18T06:08:13Z","type":"stable","version":"curl-8_10_1"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_10_0","date":"2024-09-11T05:53:05Z","type":"stable","version":"curl-8_10_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_9_1","date":"2024-07-31T07:08:30Z","type":"stable","version":"curl-8_9_1"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_9_0","date":"2024-07-24T06:37:51Z","type":"stable","version":"curl-8_9_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_8_0","date":"2024-05-22T06:02:33Z","type":"stable","version":"curl-8_8_0"},{"url":"https://github.com/curl/curl/releases/tag/curl-8_7_1","date":"2024-03-27T08:17:03Z","type":"stable","version":"curl-8_7_1"}]` | - |
| reliability.status_page | - | yes |
| security.disclosure_policy | yes | yes |
| security.scorecard | 6.9 | - |
| security.soc2 | - | yes |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=conda&package_name=ca-certificates&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (API Development Tools)

| Capability | curl | Fiddler |
|---|:--:|:--:|
| **Core** |  |  |
| REST client | ✓ | ✓ |
| GraphQL support | - | - |
| gRPC support | - | - |
| **Design** |  |  |
| Mock servers | - | ✓ |
| **Testing** |  |  |
| Automated / contract testing | ✓ | - |
| **Collaboration** |  |  |
| Team collaboration & sharing | - | - |
| **Docs** |  |  |
| Doc generation | ✓ | - |
| **Standards** |  |  |
| OpenAPI / spec import | - | - |
| **Ops** |  |  |
| CI integration / CLI | ✓ | ✓ |

*Source: Vioscale. Generated 2026-09-01T14:25:11.513Z. "-" = undocumented, not absent.*