ReqBin Alternative

Two tools in the same category

Comparisons are easy when the products are shaped differently — a desktop application against a web page practically writes itself. This one is harder, because ReqBin and api-tester.com are members of the same small category: online HTTP request testers that run in a browser, need no installation, and forward your request through a server so that browser security rules do not get in the way.

When two tools share an architecture, the marketing differences evaporate and what remains is a handful of policy decisions: whether there are accounts, whether requests are stored anywhere, whether anything is shareable, and how much interface sits between you and the Send button. Those are the things this page is about. If you want a comparison against a fundamentally different shape of tool, our Postman alternative page covers platforms and our Insomnia alternative page covers installed desktop clients.

How an online API tester actually works

It is worth understanding the machinery, because it explains every capability and every limit these tools have — ours, ReqBin's, or anyone else's.

The browser will not let a page do this by itself

Under the same-origin policy, a script on one origin cannot read a response from another origin unless that server explicitly allows it with cross-origin resource sharing headers. Public APIs generally do not, because they are built for servers and applications to call, not for arbitrary web pages. A purely client-side online tester would therefore be able to test almost nothing.

So the request is relayed

Instead, the page sends a description of your request — method, URL, headers, body — to its own backend. That backend performs the real call, receives the real response, and returns the status, headers and body for the page to display. Servers are not bound by the same-origin policy, so the relay works against any endpoint reachable from the internet.

Which creates a security problem the provider has to solve

A server that will fetch any URL a stranger names is the textbook setup for server-side request forgery. Without controls, a visitor could aim it at internal services, at other tenants on the same network, or at a cloud provider's metadata endpoint. Any responsibly built tester in this category therefore restricts what its relay may reach. Ours allows only HTTP and HTTPS, resolves the hostname and rejects the request if any resolved address is loopback, private, link-local, carrier-grade NAT or otherwise reserved, pins the outbound connection to the exact address it validated so a second DNS answer cannot be substituted afterwards, and re-runs the whole check on every redirect hop.

That machinery is also, unavoidably, why no hosted tester can reach your development machine. It is not an oversight anyone is going to fix.

What to check before pasting a token into any online tester

This applies to us as much as to anyone, so treat it as a checklist rather than a pitch:

• Is the request stored server-side? Tools that let you revisit or share a request by link are storing it somewhere. That is a genuine feature and a genuine exposure; know which you are getting.
• Is there an account? Accounts imply a record associating requests with a person. Useful for continuity, relevant to privacy.
• What does the privacy policy say about logging? Request bodies and headers are the sensitive part, not the URL. Ours are not logged or persisted; our privacy page states the position.
• Is the connection to the tester HTTPS? Non-negotiable, since your credential travels inside that connection.
• Can you use a throwaway credential instead? A scoped, short-lived, read-only key removes most of the question. This is the single most effective habit when testing on hosted tools.
• Does the task actually need a hosted tool? If the endpoint is internal or the credential is a production secret, a local client is the better answer regardless of any provider's assurances.

ReqBin and api-tester.com side by side

Only structural rows appear here. We do not list plan limits, prices or feature counts for another product, because those change and a stale claim would be both unhelpful and unfair.

The ReqBin column is described only in broad terms and deliberately carries no feature counts, plan limits or prices. Products change, and the vendor's own site is the only source worth trusting for what it does today.

When ReqBin is the better choice

You want your requests to still be there tomorrow

Persistence is the clearest divide between the two. If you want to come back to a request next week without retyping it, you need a tool that keeps it for you. We deliberately do not, which is a privacy stance and an inconvenience at the same time.

You want to hand a colleague a link to a specific request

Shareable request links are a real workflow, especially in support and documentation. A stateless console cannot produce one.

You want the features on its list rather than ours

Tools in this category diverge in the extras they build around the request: generated code snippets, structured response views, scheduled or repeated calls, account-level history. If a feature you need appears on ReqBin's site and not here, that settles it — use the tool that has it. We are not going to argue you out of a requirement.

You want the longer track record

ReqBin has been a fixture of this category for a long time and is familiar to a great many developers. Familiarity has real value when you are sharing instructions with someone else.

When the stateless option suits you better

You would rather nothing was kept

No account means no profile, no stored request bodies and no record to think about afterwards. When the request contains a token you would rather not leave lying around, having nowhere for it to be left is the simplest guarantee available.

You want the response, not an application

The page opens with a URL field ready and a Send button next to it. Ctrl+Enter sends. There is no onboarding, no workspace concept and nothing to dismiss.

You are already reading about the API

This site puts the console next to reference material rather than in a separate product: the status code reference for interpreting the number that came back, the HTTP headers guide for the ones that explain odd behaviour, and the REST API testing guide for what to check beyond a single success. If the token is a JWT, the JWT decoder is one click away and answers the expiry question immediately.

You want a request that came from somewhere else

A call issued from an unrelated public server is evidence that an endpoint answers the open internet. When a request works on your machine and not from a customer's, an outside vantage point is the useful experiment.

What api-tester.com does not do

• No saved collections. Our servers keep no record of anything you send; the short recent-URL list belongs to your browser alone.
• No environments or variables. Nothing you type is remembered for the next request.
• No team collaboration. Without accounts there is nobody to share anything with, and no roles to assign.
• No scripting or assertions. One request in, one response out, and nothing in between.
• No CI integration. Nothing here runs in a pipeline; copy the cURL command and script it yourself.
• Requests are proxied through our server, which is inherent to the category and worth weighing when the credential is valuable.
• localhost and private IP ranges are blocked, deliberately and including across redirects.
• Usage caps apply. A free, shared proxy has to limit both volume and payload size.

Related tools and references

Frequently asked questions