Dev tools · alternatives · 2026
24 alternatives to RequestBite Slingshot
Hello, For the past months I've been working on a web-based API client called RequestBite Slingshot. The main differences from many other API clients are its focus on being light-weight and fast, to not require an account to use it, mobile-friendliness, to be local-first and to the greatest extent respect your privacy, while at the same time be very competent for using and testing out HTTP APIs. It's very much in active development, but it already provides a lot of value to me, so I hope it can do the same for you. Any and all feedback is highly appreciated!
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Develop APIs fast + automatically detect endpoints
2025 · fastrequest.apidog.com · its alternatives →
- 2
Apidog▲570Development 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 This fragmented approach leads to outdated API specs and chaotic collaboration.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 →
- 3
Beautiful, cross-platform & open-source tools for debugging, testing and building with HTTP(S), on Windows, Linux & Mac.
2019 · httptoolkit.tech · its alternatives →
- 4
Personal computing platform. Make, run, and share web apps.
2020 · slingcode.net · its alternatives →
- 5IR
Sharing an internal tool that accelerated my development work 10-fold, especially with API debugging. Thought fellow developers here might find it useful. As a developer, I often have trouble reproducing errors at the client end. https://intercept.rest lets me debug and monitor API requests and responses. It is similar to the Network tab in Chrome Developer Tools but works for any API: mobile apps, webhooks, frontend etc. After I shared it with a close circle of friends, they found it incredibly useful and even found new use cases, I never imagined. Been a long time lurker here and…
2018 · its alternatives →
- 6TP
2011 · httpposttool.com · its alternatives →
- 7
Webhook Catcher▲105Create instant disposable Webhooks to inspect & respond fast
2025 · webhook.projext.in · its alternatives →
- 8
Run and test your HTTP requests. Git friendly, 100% local. - 4lejandrito/fetchbook
2023 · github.com · its alternatives →
- 9
Hey HN! We’ve open-sourced Requestly (https://github.com/requestly/requestly) - A network debugging proxy for web & mobile apps. Requestly intercepts all HTTP(s) requests & responses and provides full control to developers to modify the request/response like rewriting request URL to hit different environment or returning different response for APIs/scripts. In addition to HTTP(s) interception & modification capabilities, Requestly also offers Mock Server [0] & recording the browser sessions [1] with video, console logs, & network logs stitched together. We use…
2023 · github.com · its alternatives →
- 10
Java HTTP Client in OOP style. Contribute to Vatavuk/verano-http development by creating an account on GitHub.
2019 · github.com · its alternatives →
- 11
Mocklets▲82A HTTP-based API simulator to assist parallel development 🛠️
2018 · mocklets.com · its alternatives →
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- 14
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 →
- 15
Apicat is the ultimate offline Postman alternative that stores your .http files locally. It’s Git-friendly, open-source, and highly compatible with Postman. Test APIs offline with this powerful free offline API client designed for developers who need a reliable local API testing tool.
2025 · apicat.com · its alternatives →
- 16
Hi HN — solo developer here. I built this tool ~4 years ago purely to solve my own frustration with CORS and repeated proxy setup. The idea was intentionally boring: just prefix a URL and get control over the request and response. Somehow it grew to serving billions of requests per day, including usage by companies and universities. I’m sharing it here mainly to: - get technical feedback - learn what people would actually use a proxy like this for - understand what I should simplify or remove
Feb 2026 · corsproxy.io · its alternatives →
- 17
WebSlurp▲9The Fastest Way to Test API Security Inside Chrome DevTools
Jul 2026 · webslurp.github.io · its alternatives →
- 18
All-in-one API tool, mobile-first, no data to third-party
2025 · apicoffee.com · its alternatives →
- 19
Hey HN, I recently built an open-source HTTP interceptor called Relay, which works as a Chrome extension for capturing, modifying, and replaying HTTP requests directly in your browser — no account needed. How it works: Relay lets you capture requests as they happen, modify parameters, headers, or body content, and replay them on the fly. You can customize or debug network requests quickly without needing an external tool or complex setup. Key features: - Simple setup: Install the extension and start a session to capture requests. You can filter by URLs and methods. -Request modification:…
2024 · chromewebstore.google.com · its alternatives →
- 20
Hi HN, I built this after using Requestly, Mokku, Mockiato, Tweak, and Mockoon. Each one either paywalled the features I actually needed, required a separate server running on my machine, or just didn't fit the way I work. The browser is already open. DevTools is already open. I wanted the mocking to live there too, not in a separate app I have to remember to start. So roughly a month ago, I started building my own tools. It intercepts network requests at the browser level and lets you swap the response, status code, headers, body without touching your code or spinning up anything.…
Feb 2026 · mockstudio.app · its alternatives →
- 21
2013 · webhookinbox.com · its alternatives →
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Screenshot any website in 50ms. One API call. Easy Setup.
2025 · browsergrab.app · its alternatives →
- 24
Hi HN! I'm Ankit, the founder of Beeceptor, a request mocking and intercepting tool. This time, I built something new to address a pain I’ve personally felt (and heard from dozens of QA, frontend, and platform teams): making OpenAPI specs actually useful during development. API contracts just sit around as docs often. What if you could 'activate' them, instantly have a realistic, hosted mock server-with contract validation, smart test data, and early usage? So I made _Mockaroo for OpenAPI_, but with brains. It spins up a hosted mock server from your spec in one click. It: - Generates…
2025 · beeceptor.com · its alternatives →
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- Intercept.rest – Faster API debugging alternatives
- Test Post/Get endpoints easily from your browser alternatives
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 →