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ZAP alternatives: 4 apps ranked by verified data

Facts checked Nov 1, 2026AppBreakup editorialHow we rank

Common reasons people leave ZAP: interface is dated and busier than Burp or Caido, and windows and Linux builds need Java 17 or newer installed. We ranked 4 alternatives by how directly each one replaces ZAP, then by reviews, real visits and how recently each app's facts were checked against its own website. Burp Suite currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1mitmproxy logomitmproxyOpen sourceYesWindows, macOS, Linux4 of 452.6
  1. mitmproxy logo

    1. mitmproxyTop pick

    Best for: Developers and security testers who want a scriptable, free HTTPS proxy

    Open sourceWindows, macOS, Linux

    52.6

    score / 100

    Why switch from ZAP

    Lightweight, scriptable proxy for testers who mostly inspect and modify traffic.

    Pros

    • Free and MIT-licensed
    • Python add-on API for automating rewrites and mocks
    • Supports HTTP/2, HTTP/3 and WebSockets
    • Terminal, web and headless modes

    Cons

    • Less polished GUI than commercial proxies
    • Installing the CA certificate on devices is manual
    • Terminal-first workflow has a learning curve
    Visit mitmproxy Details and reviews
    How this score is calculated
    Editorial fit ×0.346
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is mitmproxy a good ZAP alternative?

    Verified facts

    4 of 4 verified
    License
    MIT
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Protocols
    HTTP/1, HTTP/2, HTTP/3, WebSockets
    Checked Oct 29, 2026mitmproxy.org(opens source in a new tab)
    Web interface
    mitmweb
    Checked Oct 29, 2026mitmproxy.org(opens source in a new tab)
    Scripting
    Python add-ons via mitmdump
    Checked Oct 29, 2026mitmproxy.org(opens source in a new tab)

The best ZAP alternative for…

The highest-ranked app in this list for each need.

Burp Suite logo

Best ZAP alternative for most people

Burp Suite

The industry standard, with a more polished UI and a stronger paid scanner.

mitmproxy logo

Best ZAP alternative for a free option

mitmproxy

Lightweight, scriptable proxy for testers who mostly inspect and modify traffic.

Caido logo

Best ZAP alternative for a free plan you can upgrade

Caido

Modern, fast web proxy with a cleaner interface and a free tier.

mitmproxy logo

Best ZAP alternative for open source

mitmproxy

Lightweight, scriptable proxy for testers who mostly inspect and modify traffic.

Tenable Nessus logo

Best ZAP alternative for self-hosting

Tenable Nessus

Scans hosts and networks for missing patches and known CVEs, not just web apps.

Burp Suite logo

Best ZAP alternative for Mac

Burp Suite

The industry standard, with a more polished UI and a stronger paid scanner.

Burp Suite logo

Best ZAP alternative for Windows

Burp Suite

The industry standard, with a more polished UI and a stronger paid scanner.

Burp Suite logo

Best ZAP alternative for Linux

Burp Suite

The industry standard, with a more polished UI and a stronger paid scanner.

Tenable Nessus logo

Best ZAP alternative for working in the browser

Tenable Nessus

Scans hosts and networks for missing patches and known CVEs, not just web apps.

ZAP alternatives: common questions

What is the best alternative to ZAP?

Burp Suite ranks first right now. The industry standard, with a more polished UI and a stronger paid scanner. Caido and mitmproxy follow it in our ranking.

Is there a free alternative to ZAP?

Yes. Burp Suite (free plan + paid), Caido (free plan + paid) and mitmproxy (open source) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to ZAP?

Yes: mitmproxy.

Which ZAP alternatives work on Linux?

Burp Suite, Caido, mitmproxy and Tenable Nessus run on Linux.

Why do people switch from ZAP?

The complaints we hear most: interface is dated and busier than Burp or Caido; windows and Linux builds need Java 17 or newer installed; releases are unsigned, so operating systems show warnings on install.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces ZAP, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.