Dev tools · alternatives · 2026

24 alternatives to StubOnWeb – Stub HTTP server to test API integrations

StubOnWeb is a stub HTTP server designed for developers testing API integrations. Launched in 2015, it allows users to create mock API endpoints without writing code, making it straightforward to simulate server… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. StubOnWeb – Stub HTTP server to test API integrations launched in 2015; newer entries below may have overtaken it.

1
HTTP Mock – Intercept, debug and mock HTTP(S) with zero setup▲341
Beautiful, cross-platform & open-source tools for debugging, testing and building with HTTP(S), on Windows, Linux & Mac.
2019 · httptoolkit.tech · its alternatives →
2
Stubby – better client side mocking of HTTP Requests▲5
Stubby is a small library for stubbing client-side AJAX requests, primarily designed for use in front end tests.
2015 · gocardless.com · its alternatives →
3
Open source JavaScript library to record and replay the web▲353
Embeddable session replay infrastructure on rrweb, the open source standard. Unbranded SDK, ingest on your domain, replay through your API. Free tier included.
2018 · rrweb.io · its alternatives →
4
Apidog▲570
Development teams often struggle with using multiple tools like Postman and Swagger for API design, development, and testing. This fragmented approach leads to outdated API specs and chaotic collaboration. So we built Apidog: a single, unified API platform for team collaboration. It has a beautiful interface that makes it easy to create API spec, generate request data from API spec, validate responses, create mock data, orchestrate test scenarios, and publish API documentation. Apidog = Postman + Swagger + Mock + JMeter.
2024 · apidog.com · its alternatives →
5
WeWeb▲537
Create websites faster with a next-generation visual builder
2021 · weweb.io · its alternatives →
6
Stubs▲77
The no-code page builder for web3
2023 · stubs.world · its alternatives →
7
Clobbr▲444
Easy API endpoint load testing without breaking the bank
2023 · clobbr.app · its alternatives →
8
rrweb▲125
Open source JS library to record and replay the web
2018 · rrweb.com · its alternatives →
9
FetchSandboxfree tier, from $5/mo▲348
API integration testing that remembers what breaks
Jul 2026 · fetchsandbox.com · its alternatives →
10
Hurl – Run and test HTTP requests with plain text, curl and Rust▲223
Hurl, run and test HTTP requests with plain text and curl. Hurl can run fast automated integration tests.
2021 · hurl.dev · its alternatives →
11
HTTPLab – An interactive web server▲171
The interactive web server. Contribute to qustavo/httplab development by creating an account on GitHub.
2017 · github.com · its alternatives →
12
rrweb 1.0▲120
The most popular open-source session replay library
2021 · rrweb.com · its alternatives →
13
Mockoon – mock REST APIs in seconds▲68
Mockoon is the easiest and quickest way to run mock REST API servers. No remote deployment, no account required, free, open source and cross-platform.
2017 · mockoon.com · its alternatives →
14
Mocklets▲82
A HTTP-based API simulator to assist parallel development 🛠️
2018 · mocklets.com · its alternatives →
15
StubCraft▲6
A tool designed to create mock APIs
2024 · stubcraft.com · its alternatives →
16
The HTTP Garden – A Parser Vulnerability Research Tool▲75
I wrote this tool during an internship at Narf Industries in 2023. It's a REPL that allows for quickly developing, testing, and fuzzing for HTTP request smuggling attack payloads. I started the internship having never worked with web servers, and have now found over 100 HTTP implementation bugs. I attribute this mostly to the ease of experimentation in the Garden. REPL-oriented fuzzing is just a really good interface for finding parsing bugs. It's pretty neat to able to run a differential fuzzer, categorize and display all the discovered discrepancies, then let a human pick through them and…
2024 · github.com · its alternatives →
17
HTTPretty, an easy way to mock http requests in python▲97
Bid on the RGP-Domain falcao.it. Bid now from €10 and secure the domain at an early stage!
2012 · falcao.it · its alternatives →
18
ParrotBay▲118
HTTP request inspection, mocked API response, HTTP proxy
2021 · its alternatives →
19
apimock-rs▲9
A developer-friendly, fast and functional HTTP(S) server.
Nov 2025 · apimokka.github.io · its alternatives →
20
Httpdbg – A tool to trace the HTTP requests sent by your Python code▲200
Hi, I created httpdbg, a tool for Python developers to easily debug HTTP(S) client requests in Python programs. I developed it because I needed a tool that could help me trace the HTTP requests sent by my tests back to the corresponding methods in our API client. The goal of this tool is to simplify the debugging process, so I designed it to be as simple as possible. It requires no external dependencies, no setup, no superuser privileges, and no code modifications. I'm sharing it with you today because I use it regularly, and it seems like others have found it useful too—so it might be…
2024 · github.com · its alternatives →
21
Pushpin – A new way to build realtime HTTP and WebSocket services▲114
Reverse proxy for realtime APIs.
2015 · pushpin.org · its alternatives →
22
ProxyHub▲10
Tunnel, inspect & mock localhost - no backend needed
Apr 2026 · proxyhub.app · its alternatives →
23
Fetchbook – Run and test your HTTP requests 100% locally▲59
Run and test your HTTP requests. Git friendly, 100% local. - 4lejandrito/fetchbook
2023 · github.com · its alternatives →
24
httpbin(1)▲105
HTTP request and response service
2014 · httpbin.org · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →