Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
9 status codes
These codes indicate that the client must take additional action to complete the request. Usually this means the resource has moved and the client needs to follow the redirect to a new URL.
| Code | Title | Description | RFC |
|---|---|---|---|
| 300 | Multiple Choices | The target resource has more than one representation, each with its own specific location. | RFC 7231, Section 6.4.1 |
| 301 | Moved Permanently | The target resource has been assigned a new permanent URI and any future references should use the new URI. | RFC 7231, Section 6.4.2 |
| 302 | Found | The target resource resides temporarily under a different URI. | RFC 7231, Section 6.4.3 |
| 303 | See Other | The server is redirecting the user agent to a different resource that provides an indirect response to the request. | RFC 7231, Section 6.4.4 |
| 304 | Not Modified | A conditional GET request has been received and would have resulted in a 200 response if the condition was false. | RFC 7232, Section 4.1 |
| 305 | Use Proxy | The requested resource must be accessed through the proxy given by the Location field. | RFC 7231, Section 6.4.5 |
| 306 | Unused | This status code was used in a previous version of the specification and is no longer used. | RFC 7231, Section 6.4.6 |
| 307 | Temporary Redirect | The target resource resides temporarily under a different URI and the method must not change. | RFC 7231, Section 6.4.7 |
| 308 | Permanent Redirect | The target resource has been assigned a new permanent URI and the method must not change. | RFC 7238 |
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