Free MxToolBox AlternativesWebsite Monitoring Tools & Uptime Monitor Services like MxToolBox

The best free alternative to MxToolBox is Domain Digger, which is also Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to MxToolBox and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to MxToolBox are HetrixTools, techkit.net, Porch by denyfirst and DetectZeStack.

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Alternatives
MxToolBox alternatives page was last updated

Alternatives list

  1. Domain Digger icon

    Domain Digger

     18 likes

    Full Open-Source Toolkit for Next-Level Domain Analysis.

    Cost / License

    Since

    • Since 2024

    Platforms

    • Online
    • DE flagGermany
    • European Union flagEU
    Domain Digger screenshot 1
    Good alternative?
     
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    1
  2. HetrixTools icon

    HetrixTools

     13 likes

    HetrixTools offers minute-by-minute global uptime monitoring with 15 free monitors, blacklist alerts for IPs and domains, and server resource tracking. Features a user-friendly design, public uptime pages, white label reports, and continuous updates for enhanced functionality.

    154 HetrixTools alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Since

    • Since 2015

    Platforms

    • Online
    • Software as a Service (SaaS)
    • US flagUnited States
    (dark mode) Uptime Monitors Dashboard
    Good alternative?
     
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    1
  4. techkit.net icon

    techkit.net

     Like

    Free network, DNS, and security tools for sysadmins. No ads, no tracking.

    Cost / License

    • Free
    • Proprietary

    Since

    • Since 2025

    Platforms

    • Online
    • US flagUnited States
    techkit.net screenshot 1
    Good alternative?
     
  5. Ad
    Screenshot
    HetrixTools icon
    HetrixTools

    HetrixTools offers minute-by-minute global uptime monitoring with 15 free monitors, blacklist alerts for IPs and domains, and server resource tracking. Features a user-friendly design, public uptime pages, white label reports, an...

    https://hetrixtools.com
    Learn More
  6. Porch by denyfirst icon

    Porch by denyfirst

     Like

    Self-hosted checks of what your servers show the outside world: TLS, website, mail and DNS, graded against published standards.

    Cost / License

    Since

    • New

    Platforms

    • Windows
    • Mac
    • Linux
    • Self-Hosted
    Good alternative?
     
  7. DetectZeStack icon

    DetectZeStack

     Like

    API suite for website intelligence: tech stack detection (Wappalyzer fingerprinting + DNS + TLS + HTTP headers), SSL/TLS certificate inspection, DNS intelligence with provider enrichment, security header analysis with letter grading, and technology change monitoring.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Since

    • Since 2026

    Platforms

    • Online
    Good alternative?
     
  9. Upzilla icon

    Upzilla

     5 likes

    Monitor your website, server, API, application, service and get notified if your resources have some problems with availability. Upzilla notifies you in Slack, Telegram, Messenger, or by email. Works also as a public status page with subscriptions.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Since

    • Since 2021

    Platforms

    • Software as a Service (SaaS)
    Upzilla screenshot 1
    Good alternative?
     
  10. ip.me icon

    ip.me

     2 likes

    IP, Whois, DNS Lookup A free service developed and maintained by Proton.

    Cost / License

    • Free
    • Proprietary

    Since

    • Since 2024

    Platforms

    • Online
    • CH flagSwitzerland
    ip.me screenshot 1
    Good alternative?
     
  11. OneUptime icon

    OneUptime

     4 likes

    Open-source observability platform providing uptime monitoring, alerts, incident management, status pages for transparency, log and error tracking, performance and security monitoring, automated API testing, on-call rotation, and integrated root-cause analysis for operations teams.

    113 OneUptime alternatives

    Cost / License

    Application type

    Since

    • Since 2023

    Platforms

    • Software as a Service (SaaS)
    • Self-Hosted
    • IN flagIndia
    OneUptime screenshot 1
    Good alternative?
     
  12. intoDNS icon

    intoDNS

     13 likes

    intoDNS checks the health and configuration of DNS and mail servers.

    37 intoDNS alternatives

    Cost / License

    • Free
    • Proprietary

    Since

    • Since 2010

    Platforms

    • Online
    • RO flagRomania
    • European Union flagEU
    main screen
    Good alternative?
     
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    1
  13. Echo icon

    Echo

     1 like

    Echo is a simple utility to ping websites using GTK4 and Libadwaita.

    Cost / License

    Since

    • Since 2024

    Platforms

    • Linux
    • Flathub
    • Flatpak
    Echo screenshot 1
    Good alternative?
     
  14. DomainCat icon

    DomainCat

     1 like

    Monitors SSL certificates, including the origin cert behind Cloudflare, plus domain expiry, DNS, SPF/DKIM/DMARC and blacklists. Escalating alerts, a free no-signup checker, Cloudflare import, and an MCP server so you can ask Claude what's expiring. For sysadmins and MSPs.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Since

    • Since 2026

    Platforms

    • Online
    • Software as a Service (SaaS)
    DNS info
    Good alternative?
     
  15. Nslookup icon

    Nslookup

     2 likes

    NsLookup shows all the DNS records for the website you're visiting. It has support for popular DNS servers like Google DNS, CloudFlare DNS and OpenDNS, but also local DNS servers all over the world.

    Cost / License

    • Free
    • Proprietary

    Since

    • Since 2020

    Platforms

    • Online
    Nslookup screenshot 1
    Good alternative?
     
12 of 39 MxToolBox alternatives