
Detectify
UptimeRobot
Mozilla Observatory
Reeve.page
SimpleBackups
Snyk
Intruder
AppSitter connects to your GitHub repo and checks what nobody can see from outside: row-level security across every migration, keys shipped in the bundle, dependency advisories, email DNS. Every finding comes back as a prompt for your builder.

Proxyman.io
Charles Proxy
mitmproxy
Fiddler
Surge for Mac
Weer
James
Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.

Which is more popular?
Based on our record, HTTP Toolkit seems to be more popular. It has been mentioned 30 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | appsitter.app | httptoolkit.com |
| Pricing | ||
| Platforms | ||
| Company | Startup from Germany · 1 - 9 employees · 2026 | Startup from Spain · 1 - 9 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


AI builders let anyone ship a real app. Nothing in that workflow tells you when the app is leaking data, or quietly running up a database bill. AppSitter is the watch service for exactly that gap. FREE URL SCAN, NO ACCOUNT Paste your live URL and see what the outside world can already see: API...
No description of HTTP Toolkit yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of AppSitter yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
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HTTP Toolkit Demo
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using AppSitter and HTTP Toolkit. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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HTTP ToolKit is an open-source tool for debugging. It works with the three main OS and has good features attached to it. Just with a click, it can intercept and view all your HTTP(s). Compared to others, it targets...
HTTP Toolkit supports standard HTTP debugger features including breakpoints & rewriting HTTP(S) traffic, filtering and searching collected traffic, and highlighting & autoformatting for many popular request & response...
For debugging, testing, and building APIs with HTTPs, you can effectively use HTTP Toolkit because it is built for this purpose. Also, this is the reason why it is known as a good Postman alternative for various...
Recommendations tracked on public social media and blogs since March 2021.


Tracking AppSitter since Aug 2026.
I can add certificates on my unrooted android. That how HTTPToolkit [0] works, it only requires adb, which (thankfully) doesn't trip banking apps. Banking apps can (and do iirc) pin certificates, so a rooted phone adds no risk... - Source: Hacker News / 8 months ago
For my rather simple needs I've been using https://httptoolkit.com free edition, I like that it launches a independent Firefox window on its own for the intercepting so I don't have to touch my working browser or deal with configuring a... - Source: Hacker News / 10 months ago
This one is truly a gem: https://httptoolkit.com It even bypasses SSL pinning on Android using 1 click. - Source: Hacker News / 10 months ago
When comparing AppSitter and HTTP Toolkit, you can also consider the following products.

Detectify provides a user friendly and thorough web security scan that allows you to focus 100% on web development.
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Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
Compare Proxyman.io to AppSitter or HTTP Toolkit:


HTTP proxy / HTTP monitor / Reverse Proxy
Compare Charles Proxy to AppSitter or HTTP Toolkit:

The Mozilla Observatory is a project designed to help developers, system administrators, and security professionals configure their sites safely and securely.
Compare Mozilla Observatory to AppSitter or HTTP Toolkit:

mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP.
Compare mitmproxy to AppSitter or HTTP Toolkit: