Side by side
Functionize vs REST Assured
Both stand on regression testing software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Web
Choose Functionize if you need plain-language test authoring, cross-browser runs, or a connection from an MCP-compatible coding agent. Consider Growth or Scale when the free plan’s included capacity is insufficient; Enterprise pricing requires contacting sales and has a 12-month minimum.
Visit Functionize Free plan API
REST Assured offers a broad set of REST testing and validation modules at no cost under an open-source license. Teams should follow the project’s latest-release security guidance and use its listed community support channel.
Visit REST AssuredThe facts
| Functionize | REST Assured | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Web | API |
| Lowest paid plan | Growth: $20 a month | Free or on request |
| Plans published | 4 | 1 |
| Maker | Not published | Not published |
| Website | functionize.com | rest-assured.io |
| On regression testing software | #14 of 29 | #18 of 29 |
Functionize: what it does well
- Creates and maintains tests from plain-language descriptions.
- Runs tests across browsers and reads the application each run.
- Company says tests adapt to interface changes by identifying elements by what they are.
- Coding agents can connect through the Functionize MCP server.
- Enterprise options include private deployment and regional data residency.
What to know first
- Agent work stops when credits run out until replenished or the billing period restarts.
- Enterprise pricing is available through sales, with a 12-month minimum.
- Growth and Scale credit add-ons cost 10 USD for 200,000 credits during a billing period.
REST Assured: what it does well
- Supports seven HTTP methods
- Checks bodies, headers, cookies, and status
- Parses JSON and XML
- Includes JSON Schema validation
- Apache License Version 2.0
What to know first
- Java-focused DSL
- Security fixes target latest release line
- Support is directed to a mailing list
- No free trial
Alternatives to Functionize Alternatives to REST Assured The whole list