Open Source Truecaller AlternativesUnwanted Call Blockers and other similar apps like Truecaller

The best open source alternative to Truecaller is SpamBlocker. If that doesn't suit you, our users have ranked more than 25 alternatives to Truecaller and six of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Truecaller are Yet Another Call Blocker, NoPhoneSpam, CallBlocker and Silence: Block Unknown Callers.

filter to find the best alternatives

Truecaller alternatives are mainly Unwanted Call Blockers, but if you're looking for Anti-Spam Tools you can filter on that. Other popular filters include Free, Open Source, Android, Android + Free, Linux, Online + Free and iPhone. These are just examples - use the filter bar below to find more specific alternatives to Truecaller.
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Alternatives list

  1. SpamBlocker icon

    SpamBlocker

     17 likes
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    Efficiently blocks unwanted calls and SMS on Android without replacing your default app. Utilizes regex rules, contact filtering, STIR attestation, repeated call checks, dialed number, recently used apps, and a time schedule for precise, customizable protection.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Android
    • F-Droid
    SpamBlocker screenshot 1
    SpamBlocker screenshot 2
    SpamBlocker screenshot 3
     
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    1
    Comments about SpamBlocker as an Alternative to Truecaller
    FeUser
    Negative
    0

    TrueCaller main function is identification (name ad)

    Truecaller Icon
    SpamBlocker icon

    • SpamBlocker is the most popular Android alternative to Truecaller.

    • SpamBlocker is the most popular Open Source & free alternative to Truecaller.

    • SpamBlocker is Free and Open SourceTruecaller is Freemium and Proprietary
    • SpamBlocker is Lightweight and Privacy focusedTruecaller is not according to our users
  2. Yet Another Call Blocker icon

    Yet Another Call Blocker

     23 likes
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    A free and open source application that can block unwanted calls or warn about probable intentions of callers using a third-party crowdsourced phone number database (from some other proprietary app).

    Cost / License

    • Free
    • Open Source

    Application types

    Alerts

    • Discontinued

    Platforms

    • Android
    • F-Droid
    Yet Another Call Blocker screenshot 1
    Yet Another Call Blocker screenshot 2
    Yet Another Call Blocker screenshot 3
     
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    1
    Comments about Yet Another Call Blocker as an Alternative to Truecaller
    Guest
    Negative
    2

    YACB is just a call blocker, it's nowhere near Truecaller. YACB doesn't tell you any details about the caller.

    Review by a new / low-activity user.
    Truecaller Icon
    Yet Another Call Blocker icon
    • Yet Another Call Blocker is Free and Open SourceTruecaller is Freemium and Proprietary
    • Yet Another Call Blocker is Privacy focusedTruecaller is not according to our users
  4. NoPhoneSpam icon

    NoPhoneSpam

     2 likes
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    Block calls from annoying or private numbers on your Android device. By bitfire.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • F-Droid
     
  5. CallBlocker icon

    CallBlocker

     1 like
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    A call blocker for Android that rejects calls from numbers that match or do not match a given regular expression. Also supports excluding known contacts or blocking unknown numbers. Does not contain trackers, ads or doesn't need internet access if the optional update feature...

    Cost / License

    • Free
    • Open Source

    Platforms

    • Android
    CallBlocker screenshot 1
     
  7. CallerPy icon

    CallerPy

     1 like
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    Truecaller Name Retriever. The simplest method for accessing truecaller's database is through CallerPy's online service.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Linux
    • Online
    CallerPy screenshot 1
     

    • CallerPy is the most popular Linux alternative to Truecaller.

    • CallerPy is Free and Open SourceTruecaller is Freemium and Proprietary
6 of 6 Truecaller alternatives