Knockout API vs MockWebServer
Knockout API
useknockout.comMockWebServer
square.github.ioSide by side
| Figure | Knockout API | MockWebServer |
|---|---|---|
| Price from | $0.02/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Android | — | Yes |
| API | Yes | — |
| Plans published | 7 | 2 |
| Spec score · API Mocking Tools | 8.4 (#7) | 7.7 (#14) |
| Integrations | Official client options include Node, React, Python, and CLI, alongside REST and any HTTP client. | Optional artifacts provide JUnit 4 and JUnit 5 integrations, while the core mockwebserver3 module has no JUnit dependency. |
| Purpose | Knockout provides image and video processing tools through a browser app and API. | MockWebServer is a library for testing HTTP, HTTPS, and HTTP/2 clients. |
| Security | The privacy policy says API tokens are SHA-256 hashed, passwords are managed by Supabase Auth using bcrypt, and traffic is encrypted via TLS. | The docs state that MockWebServer can test HTTP, HTTPS, and HTTP/2 clients; they do not state security certifications or compliance claims. |
| Support | The site lists community support for Free, email support for Pay-as-you-go, and Slack support for Volume. | The project directs users to report issues encountered on GraalVM, but does not state a MockWebServer support plan or response time. |
Plans
Knockout API
- FreeFree
- Pay-as-you-go$0.02 a month
- Knockout Plus$10 a month
- FreeFree
- Pay-as-you-go$0.02 a month
- Knockout Plus$10 a month
- VolumePriced on request
In their own words
Knockout API
Knockout API provides image and video processing through a browser app and API. Its image tools cover background removal and replacement, batch processing, masking, smart crop, stickers, outlines, shadows, and inpainting; the API also handles upscaling, portrait restoration, colorization, and object removal. Video background removal runs asynchronously, with job polling for progress. The browser Canvas supports layered designs with text and effects, and users can save canvases and cutouts to a free account. Developers can connect through REST, any HTTP client, or official Node, React, Python, and CLI options. The service says it manages GPU processing, endpoint updates, usage records, credentials, teams, and billing. Its privacy policy says uploaded images are processed in GPU worker memory, not retained after the response, and not used to train models. The Free plan is free, with 30 images per month and 60 requests per minute. Pay-as-you-go is $0.02 a month, with metered usage billed monthly; Plus is $10 a month. Paid tiers have no monthly cap and a 600-request-per-minute limit.
MockWebServer
MockWebServer is a free, open-source Android test library for developers checking HTTP clients. It provides a scriptable local server where tests supply canned responses and inspect requests made during HTTP, HTTPS, or HTTP/2 calls. Recorded requests expose method, path, HTTP version, body, headers, and chunk sizes for verification. Responses can be queued in sequence or generated by a Dispatcher that applies a request-by-request policy. Tests can throttle responses to imitate slow networks, and socket policies can keep connections open, disconnect during request or response bodies, or send no response. The README includes Java and Kotlin examples. The documented dependency is com.squareup.okhttp3:mockwebserver3:5.5.0, available through Maven Central. MockWebServer is licensed under Apache License 2.0 and is intended for internal and basic testing of apps using OkHttp. The project says it is not a full-featured standalone HTTP testing library and is not actively developed for new features; it suggests MockServer when requirements exceed its scope.