Charles Proxy

(charlesproxy.com)

151 points | by handfuloflight 4 hours ago

22 comments

  • hboon 3 hours ago
    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.
    • shubhamjain 1 hour ago
      Proxyman is 100x value for 2x the price. I am not even kidding. Native UI, shortcuts, cert installation helper tools. And script editor to programmatically edit requests is so much better and powerful than Charles' request editor.
      • tricker5453 43 minutes ago
        I've moved to Proxygen app long time ago. Offers the same core functionality plus some unique features for half the price. And it has an amazing iOS app.

        https://proxygen.app

    • mavamaarten 23 minutes ago
      If the devs behind Charles would just tweak their UI a bit, it would be the absolute perfect tool. Functionally it pretty much already is. Mainly being able to turn on and off and configuring features I use all the time (rewrite, map local, map remote) is always a journey through menu's that don't always make sense. The only functional thing I'm missing is some DNS stuff (e.g. throttling or breaking DNS specifically).

      I tried using proxyman for a while, and while definitely powerful and more modern, it honestly didn't feel "better" or more powerful so I didn't go for yet another license.

    • aaronbrethorst 2 hours ago
      Likewise. I was a dedicated user of Charles for about a decade. It’s great, but if you are a macOS user, Proxyman is better, easier, and more macOS friendly.
    • ChrisMarshallNY 3 hours ago
      Pretty nice.

      Does it work for Xcode simulators?

      I use Charles extensively (I am using it for the development I’m doing right now), and it needs to work on simulators.

      Cost isn’t an issue for me. Fitness to purpose is important. I won’t cripple my development capacity, in order to save $50.

      • itsn0tm3 2 hours ago
        It makes working with Xcode simulators even easier by having a dedicated UI workflow to install the proxy certificates and restart the sim. I used to face issues from time to time doing this with Charles having to restart my machine at times and not getting the certificates to work. Proxyman makes this way nicer to work with and since switching I never faced certificate issues again.

        Not trying to do an ad, but really glad I don‘t have to think about that anymore :)

      • jshier 3 hours ago
        Yes, Proxyman has great sim integration, including the ability to filter by apps within the sim. It's a far better macOS app than Charles, and I've never found it to be lacking a feature I used in Charles.
        • ChrisMarshallNY 3 hours ago
          Cool. I appreciate the tip. I’ll give it a go.

          Thanks!

      • OptionalDonuts 1 hour ago
        When I was still working with iOS, all of us on the team switched to Proxyman and found it much better than Charles. Developer experience wise that is (features, ui/ux, etc.) We ran into some issues with Charles and found Proxyman as the alternative. Don't remember the issues but we never looked back.
      • hboon 2 hours ago
        It does. I find the UI better and setting it up easier too
    • sgt 3 hours ago
      Looks much better, thanks for that tip
    • cientifico 3 hours ago
      That it's an osx ONLY app.
      • lnx01 1 hour ago
        MacOS, iOS, Windows, and Linux
  • logicuce 3 hours ago
    I feel obliged to mention Fiddler. The tool I loved almost 20 years back and felt like it came from future. IIRC it was/is more powerful than Charles. Fiddler was Windows only but at one time they had builds for other platforms in works. Sadly they got acquired which changed their roadmap, and I had also moved on from Windows.

    https://www.telerik.com/fiddler

    • _blackhawk_ 3 hours ago
      This. I tell people tales of that beautiful tool. have you found anything for a MacOS? My hunt so far has been futile.
  • cientifico 3 hours ago
    One hidden gem.

    The closest free alternative is https://www.mitmproxy.org/ that is not even close.

    And off course, https://www.wireshark.org/ but that is too generic and with a bigger learning curve.

    Worth the money. And no subscription (or there weren't a subscription back then)

    • dns_snek 45 minutes ago
      Wireshark is extremely powerful and useful but it lives in a completely different category of tools. It's not a proxy so it can't modify traffic or inspect HTTPS [1], it's used to passively capture and analyze general network traffic and troubleshoot networking issues.

      [1] without an elaborate setup, your program needs to be instructed to dump TLS encryption keys for Wireshark to read

    • acheong08 2 hours ago
      I built a bad clone of Charles Proxy over the summer as part of another project (iOS VPN -> mitm with custom root certificate -> logging). It's surprisingly simple. It basically goes App -> Packet tunnel -> SOCKS -> a child process (I used https://github.com/AdguardTeam/gomitmproxy) to handle the sniffing and reencryption.

      Did post the source somewhere at some point but my git server got corrupted and I haven't gone and fixed it. https://github.com/acheong08/apple-corelocation-experiments/...

      I wonder if AI is good enough to vibe code my horrible hacks into a full clone of Charles Proxy these days.

      Annoying fact: Apple requires you to have a paid developer account to access the Packet Tunnel APIs. You can't even test it in XCode simulator because of how networking works in there. It's insane that I can't even develop for my own phone without paying an extra fee to Apple. The error message when you sideload without a paid account doesn't make it obvious at all and it took me a good day or two before realizing .

    • efortis 3 hours ago
      Burp is free too (community edition)

      https://portswigger.net/burp/communitydownload

    • punnerud 1 hour ago
      I was a daily user of mitmproxy, until they changed all they keybindings around version 2. Tried a couple of times to get used to the new “TMUX” style, but switched to Charles Proxy.

      Have mitmproxy gotten any better in usability over the years?

      Just based on the images, is seems to have the same problems?

  • obventio56 10 minutes ago
    Wait why is this on the front page? I thought this is a very established and well-known tool
  • runtimepanic 2 hours ago
    Burp Suite can do much of this as well, but the intent feels different. Charles is very much about observing and understanding raw HTTP(S) traffic with minimal friction, which makes it handy for quick debugging, mobile app inspection, or client-side issues. Burp leans heavily into security workflows: interception, replay, automation, and attack surface exploration. That power comes with more setup and a more opinionated UI. I’ve found Charles useful when I want visibility without switching into “pentest mode,” whereas Burp shines when security analysis is the goal.
    • lillesvin 1 hour ago
      Just to mention an alternative option, ZAP (aka. Zed Attack Proxy) covers much of the same ground as Burp and is entirely free and Open Source.
      • dns_snek 33 minutes ago
        On paper ZAP has all of the features I care about, but I gave it my best try and found it really unintuitive to use.
  • followben 3 hours ago
    Wow. Charles was indispensable tool for working with HTTP apis back when I got started as an iOS dev in 2011. Great to see it still going strong.
  • aua 3 hours ago
    I found Charles Proxy last year and it's fantastic. They have a mobile app too (if you need the ssl proxying for mobile apps).
  • poemxo 28 minutes ago
    I like Burp Suite better for intercept and Squid better for a persistent proxy but maybe I'll give Charles another shot.
  • DrBenCarson 3 hours ago
    Alltime great software

    I’m on proxyman https://proxyman.com/

    • jibcage 3 hours ago
      I used Charles for a while and also jumped on the Proxyman bandwagon. It’s a slick tool and even works for remote debugging (i.e., an iPhone attached to your computer with a cable).
      • tricker5453 23 minutes ago
        Proxygen (https://proxygen.app.) has this super cool way to pair its iPhone app with the Mac app, and then remotely inspect traffic from iPhone apps on the Mac. You do the pairing once and then just beam traffic over. Attaching cables feels pretty ancient compared to this.
  • swaraj 3 hours ago
    I once used Charles Proxy to change all the game configs for Candy Crush Saga on my phone back in 2013 by intercepting and replacing the API requests - I made all the puzzles have 1-2 colors and infinite powerups. I guess they didn't care much about the security because I ended up spending way more time in the game
  • infomaniac 4 hours ago
    Fantastic software that I've used for over a decade. Interacted with Karl a few years ago about Adobe's AMF format; very generous with his time. I was surprised to learn that it's over 20 years old! https://en.wikipedia.org/wiki/Charles_Proxy
    • sponno 3 hours ago
      i just texted Karl to say he’s on the front page of HN. I was the same. Charles was soo good for ol AMF!! Still miss Flash.
  • h33t-l4x0r 2 hours ago
    I loved Charles, I used it for many years. It only stopped when an update changed the UI in ways that were confusing, and also the chrome network tab really did everything I need in terms of inspecting requests / responses.
  • eddywebs 3 hours ago
    How come a reverse-proxy, better than the network tab in dev tools ?
    • efortis 3 hours ago
      You can do more, e.g., changing the status code
  • simultsop 55 minutes ago
    Tool that can't be beaten
  • tricker5453 35 minutes ago
    I mean, Charles Proxy was a great option perhaps 20 years ago, in a time when there weren't any native Mac apps around.

    If you take a closer look at the HTTP proxy app space a lot has happened since then. We have many free open source apps like mitmproxy, information security focused tools like Burp Suite and many others.

    I have taken a liking on a relatively new app Proxygen (https://proxygen.app). They've nailed their UI and the app receives constant updates. Their free version runs circles around similar apps like Charles and Proxyman which aren't that great value these days.

    • daishi424 1 minute ago
      Mind making some disclosure? Your account is 0 days old, and has made 3 comments. All in the same thread and promoting the same app.
  • tgma 3 hours ago
    More narrow cmdline http inspection tool https://github.com/signeen/inspect-http-proxy
  • self_awareness 3 hours ago
    This one is truly a gem:

    https://httptoolkit.com

    It even bypasses SSL pinning on Android using 1 click.

  • el_benhameen 3 hours ago
    Just upgraded my license today, so I guess Charles is my new Baader-Meinhof token. Great tool! The ssl proxying is especially handy.
  • rramadass 1 hour ago
    How does "Zed Attack Proxy" (ZAP - https://www.zaproxy.org/) which is opensource and part of OWASP (https://owasp.org/www-community/Free_for_Open_Source_Applica...) compare with this and other similar proxies?
  • wahnfrieden 3 hours ago
    Even after using it for years I could never recognize all its unlabeled icons without hovering for tooltip

    I emailed the author about it a decade ago but he didn’t seem convinced

  • user3939382 3 hours ago
    Even better SIP bullshit off kext tap nic mitm intermed. certs. Fuck all the phone home stuff it’s enough.
  • imvetri 3 hours ago
    Never learnt the use of this tool. The certificate configuration tripped my head during my work. This gives brain damage because it doesn't make sense.

    Why to check network payload when you are sure the data was sent.

    -frontend developer