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Alternatives

Products that do what HTTP Error Lookup Codes does

Understand HTTP errors instantly; causes, comparisons, fixes

  1. 1

    Build free 404, 503 and maintenance pages in 60 seconds

    2015

  2. 2AC

    To understand the meaning of an HTTP status code and list all codes belonging to a specific class from your terminal.

    2022 · github.com

  3. 3HA

    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

  4. 4
    Janitor181

    Keep your websites clean and healthy

    2019

  5. 5SE

    I recently wanted to test how a part of a web app responded to a 502 HTTP status code from a remote site from which it was pulling data. When I came to test it, the remote site was working fine, but I still wanted the 502. So I created statuscoder, just append your desired status code to the URL and it'll respond with that code. http://statuscoder.com It's my first single-use project and I like its simplicity - it does one job and (hopefully) does it well. Is there anything else that you'd want to see it do?

    2012 · statuscoder.com

  6. 6
    Decoder85

    Instantly decode error and status codes

    2019

  7. 7IR

    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

  8. 8

    API integration testing that remembers what breaks

    Jul 2026 · fetchsandbox.com

  9. 9

    Test URLs in bulk for their HTTP responses, by ex-Google

    2022

  10. 10IM

    0github.com is a pull request viewer that color-codes every diff line/token by how much human attention it probably needs. Unlike PR-review bots, we try to flag not just by "is it a bug?" but by "is it worth a second look?" (examples: hard-coded secret, weird crypto mode, gnarly logic, ugly code). To try it, replace github.com with 0github.com in any pull-request URL. Under the hood, we split the PR into individual files, and for each file, we ask an LLM to annotate each line with a data structure that we parse into a colored heatmap. Examples:…

    Oct 2025 · 0github.com

  11. 11AW

    2019 · statuses.now.sh

  12. 12
    HTTP View126

    Supercharged HTTP(S) debugging, in one click

    2019

  13. 13HS

    2012 · httpstatus.es

  14. 14WR

    Hey HN! We’re open-sourcing highlight.io (https://github.com/highlight/highlight), a session replay and error monitoring tool. Highlight.io gives you a high-precision video-like replay of what users are doing when an error or exception occurs in your web app, along with a full-fledged error monitoring experience (similar to bugsnag, rollbar, etc..). The main value prop of highlight.io is that we help you understand the full context surrounding an error and allow you to drill down to the code path that a user invoked (i.e user clicked button X, sent network request Y, and…

    2023 · github.com

  15. 15

    A simple, beautiful Webhook debugging tool.

    2018

  16. 16

    Ditch your scraper. Make one API call with any tool.

    Jun 2026 · tabstack.ai

  17. 17EH

    Just launched Errorception http://errorception.com/ yesterday. Errorception is a error tracking service which catches and reports in end-users' browsers as they happen. I built Errorception since I couldn't didn't find any error reporting system that (a) didn't rewrite my JS, (b) didn't modify the browser runtime by overriding common functions, and (c) had a zero performance cost, especially with regards to blocking script tags. Would love your thoughts. Site: http://errorception.com/

    2011

  18. 18

    Stop guessing why bugs happen

    2023

  19. 19

    One API to scrape, enrich, and understand the web.

    Mar 2026 · context.dev

  20. 20EM
  21. 21

    Complete Frontend Error Tracking at an Affordable Price

    2024

  22. 22

    A 10-question quiz to learn HTTP status codes the fast way

    Jun 2026 · jsondevtools.org

  23. 23

    Inspect HTTP requests, compare them or mock response

    2021

  24. 24

    Check your website's SEO, analyze competitors and keywords

    2019

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