
Charles Proxy
HTTP Toolkit
Fiddler
Requestly
mitmproxy
Surge for Mac
Weer
Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.

NiftyImages
OpenAlternative
MailChimp
Postmark
Movable Ink
Momen
Brevo
Real-time, open-time content for email: countdown timers, dynamic images, live product picks, geo-targeted maps, one-click surveys, and scratch-card rewards. No code, no ESP integration, rendered fresh every time someone opens.

Which is more popular?
Based on our record, Proxyman.io seems to be more popular. It has been mentioned 27 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | proxyman.com | alterable.com |
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| Company | — | Startup from the United States · 1 - 9 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


Modern and Delightful HTTP Debugging Proxy Proxyman is a native, high-performance macOS application, which enables developers to observe and manipulate HTTP/HTTPS requests.
Alterable adds real-time, open-time content to email campaigns, no coding, no ESP integration, no resends. Every asset is a single image URL that renders fresh the moment a subscriber opens the message, not the moment you hit send. Countdown timers count down live in the inbox. Choose a fixed...
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
No analysis of Alterable yet.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Proxyman.io and Alterable.
Alterable's answer:
Most tools in this space (NiftyImages, Sendtric, MotionMail, CountdownMail) do one thing well, usually just countdown timers. Alterable is a single platform for six distinct open-time content types, timers, dynamic images, live product data, geo-targeted maps, surveys, and scratch-card rewards, all rendered the same way: one image tag, no ESP integration, no JavaScript.
That "just an image" approach is also what makes it universal: it works in every major email client without exception, since there's nothing for Outlook or Gmail to selectively support or block.
The rules engine is shared across all six content types too. The same conditions (location, weather, device, time of day, stock level) that pick a dynamic image can pick a product, a map location, or a timer variant, so teams build a targeting logic once and reuse it everywhere instead of learning a separate tool per feature.
Alterable's answer:
Against single-purpose timer tools (Sendtric, CountdownMail, MotionMail, CountingDownTo): those platforms do one thing, a countdown widget. Alterable includes countdown timers plus dynamic images, live product data, geo-targeted maps, surveys, and scratch cards, on one account, with one shared rules engine. If a team outgrows "just a timer," there's no second tool to adopt.
Against broader personalization platforms (NiftyImages, Movable Ink): Alterable is free to start with no credit card, and every asset is a plain image tag rather than requiring a native ESP integration or account connection. That keeps setup to minutes and means it works identically across Klaviyo, Mailchimp, HubSpot, GetResponse, or any of 50+ platforms, with no per-ESP configuration to maintain.
Because it's "just an image": there's no JavaScript, no AMP, no interactive-email fallback logic to write or test. It renders the same way in Outlook as it does in Gmail, which is where more elaborate interactive approaches usually break first.
Share your experience with using Proxyman.io and Alterable. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Proxyman just like Paw is a native macOS web debugging proxy application. This tool stands as an intermediary or a man-in-the-middle server. With its built-in macOS setup, you can capture, inspect and get around...
Similar to the above-mentioned Paw, Proxyman is a premium native macOS web debugging proxy application.
On the pricing front, Requestly strikes a balance between affordability and functionality. It is an open-source tool, offering freemium to individual developers and affordable pricing plans for team collaboration. We...
We have no reviews of Alterable yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


I don't have elaborate needs and have used Charles for many years. A few years ago I switched to https://proxyman.com and found it easier to use. - Source: Hacker News / 10 months ago
Network analysis tools like Charles Proxy and Proxyman provide essential debugging capabilities for mobile applications. These tools intercept and analyze all network traffic, enabling detailed inspection of API communications. - Source: dev.to / 12 months ago
Armed with this you could now investigate the raw JSON using HTTP proxying (I like to use ProxyMan for this), and/or talk to the back-end team, see if they've made some changes and are aware of the breakage in the contract between client... - Source: dev.to / about 2 years ago
Tracking Alterable since Feb 2022.
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