Dev tools · alternatives · 2026

24 alternatives to Zenlogin – API to email users when a suspicious login happens

Zenlogin detects suspicious logins so you don't have to. A single endpoint API to notify your users when there's been suspicious login activity on their account.

Zenlogin is an API for developers that detects suspicious login attempts and automatically sends email notifications to users. It integrates into authentication systems to flag unusual access patterns and alert account… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Zenlogin – API to email users when a suspicious login happens launched in 2021; newer entries below may have overtaken it.

1. 1
   LogDog▲64

   Get alerted if there's suspicious activity in your accounts

   2014 · getlogdog.com · its alternatives →

2. 2
   Zenaton▲435

   Zapier for Developers: Control flows within Apps 10x faster

   2019 · gillesbarbier.dev · its alternatives →

3. 3MW
   My wife's email was hacked, I created an app to protect online accounts▲56

   2014 · getlogdog.com · its alternatives →

4. 4
   Watch my logs!▲58

   PHP log monitor that helps to debug your apps

   2022 · watchmylogs.com · its alternatives →

5. 5
   Secure Audit Log▲272

   Log important application events with a single line of code

   2023 · pangea.cloud · its alternatives →

6. 6
   ZenoZaps▲145

   Personalized AI to take the stress out of email overload

   2023 · textcortex.com · its alternatives →

7. 7
   Checker▲124

   Detect fake signups in under 200ms with an easy-to-use API

   2025 · its alternatives →

8. 8
   Password Checkup by Google▲178

   A Chrome Extension to help resecure hacked accounts

   2019 · chromewebstore.google.com · its alternatives →

9. 9
   Base API▲277

   API for authentication, email sending, images and more!

   2019 · base-api.io · its alternatives →

10. 10
    Logii MultiLogin Browser▲84

    Multi-login, multi-account browser for growth hackers

    2022 · logii.in · its alternatives →

11. 11HG
    HNNotify – Get emailed when a users reply to your HN Posts and Comments▲66

    2018 · hnnotify.xyz · its alternatives →

12. 12
    nlogin.me▲94

    The password manager that keeps your email secret too

    2023 · its alternatives →

13. 13
    LoginLlama▲95

    Hey HN I recently rebuilt my microsaas Loginllama. It uses the same stack but I've made the API much much better and it's now a product I'm happy to promote. As with most developers I hide behind building instead of marketing. As this a developer focused product, this is me marketing! It's a product built in anger for myself when I had to implement a similar system for a number of clients. I released it as I assume that other people had the same problem. There are SDK's available for Nodejs, PHP and Python. Auth0 and Wordpress integrations are coming soon. Let me know what you think and if…

    2023 · loginllama.app · its alternatives →

14. 14
    Danger▲119

    Catch fake details, block throwaway emails, spot problem IPs

    2024 · its alternatives →

15. 15
    Cierge▲88

    Authenticate your users without a password - for any web app

    2018 · its alternatives →

16. 16
    SimpleLogin▲116

    Open source email alias. Clean inbox. Custom domain, PGP,...

    2021 · simplelogin.io · its alternatives →

17. 17
    Loginbait.com▲77

    Protect your privacy with honeypots and get notified

    2023 · its alternatives →

18. 18
    A Chrome extension to see notifications for comments on your HN threads▲79

    2021 · chrome.google.com · its alternatives →

19. 19
    Zena by ZenABM - LinkedIn Ads AI Analyst▲79

    Analyze your LinkedIn Ads + revenue impact on company level!

    Dec 2025 · zenabm.com · its alternatives →

20. 20
    MostLogin▲7

    AntiDetect browser: manage multiple accounts safely

    2025 · mostlogin.com · its alternatives →

21. 21
    Zendost▲76

    Simplified requests and approvals management for team

    2018 · its alternatives →

22. 22
    LogZab▲67

    Protect your business from fraud

    2022 · logzab.com · its alternatives →

23. 23
    HackNotice▲79

    Find out when hackers steal your data or leak your identity

    2018 · hacknotice.com · its alternatives →

24. 24
    GoLogin▲8

    Anti-detect browser

    2021 · gologin.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 →