Dev tools · alternatives · 2026

24 alternatives to Castle

The easiest way to protect your users from getting hacked

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Castle launched in 2016; newer entries below may have overtaken it.

1. 1
   Castle▲3

   Bank level security for developers

   2015 · castle.io · its alternatives →

2. 2
   Templarbit▲144

   Security for modern teams running software

   2017 · templarbit.com · its alternatives →

3. 3
   Servers for hackers▲96

   Server Admin for Programmers

   2015 · serversforhackers.com · its alternatives →

4. 4
   wallarm▲151

   Reveal security flaws in web apps and APIs

   2016 · wallarm.com · its alternatives →

5. 5
   HackerOne▲75

   Security Response & Bug Bounty Platform

   2015 · hackerone.com · its alternatives →

6. 6
   Hacksy by Decoded▲175

   Check if your data has been leaked & get a better password

   2017 · its alternatives →

7. 7
   DBOT▲66

   Protecting you from malicious links while you "Slack"

   2015 · its alternatives →

8. 8
   HackerWeb▲88

   A simple and readable Hacker News app

   2016 · hackerwebapp.com · its alternatives →

9. 9
   LogDog for iOS▲114

   Don't lose control of your online accounts to hackers!

   2016 · apps.apple.com · its alternatives →

10. 10
    hackster.io▲77

    Where hardware hackers and makers share their projects

    2014 · hackster.io · its alternatives →

11. 11
    WebARX▲147

    Protect websites from plugin vulnerabilities

    2019 · patchstack.com · its alternatives →

12. 12
    Acra▲76

    A data security tool for developers

    2017 · cossacklabs.com · its alternatives →

13. 13
    Virusdie▲100

    Clean and protect your websites like a security expert

    2016 · virusdie.com · its alternatives →

14. 14
    Hello Tech Pros: Hacking for Fun and Proft▲66

    But mostly for fun

    2016 · gadgetsprimer.com · its alternatives →

15. 15
    Bitium▲82

    Securely manage your company’s apps, users and passwords

    2014 · docs.cloud.google.com · its alternatives →

16. 16
    Disconnect▲90

    The easiest way to protect your online privacy

    2014 · disconnect.me · its alternatives →

17. 17
    Crowdcurity▲104

    Crowdsourced Application Security

    2015 · crowdcurity.com · its alternatives →

18. 18
    Loginbait.com▲77

    Protect your privacy with honeypots and get notified

    2023 · its alternatives →

19. 19
    Hackuna▲68

    Secure yourself from all kinds of hackers!

    2018 · play.google.com · its alternatives →

20. 20
    Watcher▲83

    Get home safe

    2016 · watcher.io · its alternatives →

21. 21
    Node Security▲11

    Continuous Security monitoring for node apps

    2016 · its alternatives →

22. 22
    Hardenize▲5

    Making web site security easy and fun

    2016 · hardenize.com · its alternatives →

23. 23
    AppSolid▲108

    Protect Android apps against hackers

    2016 · its alternatives →

24. 24
    Dojo by BullGuard▲96

    Protecting your smart connected home

    2015 · dojo-labs.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →