Life & fun · alternatives · 2026

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. The Signup Block – Collect supporters for your organization launched in 2017; newer entries below may have overtaken it.

1. 1
   Waitless▲587

   Collect sign ups with built-in referrals

   2025 · letterby.com · its alternatives →

2. 2
   Signupster▲59

   The easiest way to organize groups, events and volunteers

   2023 · signupster.com · its alternatives →

3. 3
   Trueguard▲365

   Stop fake user signups

   2025 · trueguard.io · its alternatives →

4. 4
   Frictionless Signup by Segment & Clearbit▲293

   Magically autofill forms and improve conversions

   2016 · twilio.com · its alternatives →

5. 5
   Shoutout▲564

   Attract more customers by highlighting why people trust you

   2021 · shoutout.io · its alternatives →

6. 6
   Ayven▲160

   Carries and drives your team's agenda

   Sep 2026 · ayven.ai · its alternatives →

7. 7
   IntroSnap▲92

   Drive engagement and win deals - sign up free

   2021 · its alternatives →

8. 8
   Easy Advocacy▲186

   Launch an employee advocacy campaign in 10 minutes for free

   2020 · its alternatives →

9. 9
   BlockSign▲79

   Sign Your Docs Digitally Using Bitcoin

   2014 · blocksignit.com · its alternatives →

10. 10
    rally▲157

    A community of rejected YC founders

    2020 · welcomerally.com · its alternatives →

11. 11
    SignUpFirst 2.0▲69

    Early adopter startup deals

    2016 · signupfirst.com · its alternatives →

12. 12
    EARLYCLAIM▲130

    Reserve your favorite username in new startups

    2014 · its alternatives →

13. 13
    SignupGuard▲6

    Stop fraudulent signups

    2025 · guardpoint-scan.lovable.app · its alternatives →

14. 14
    Cue▲197

    Social proof, FOMO & conversion optimization tool

    2020 · thetrustmaker.com · its alternatives →

15. 15
    Squirrel▲108

    An app blocker that pays you back

    Sep 2026 · apps.apple.com · its alternatives →

16. 16
    SignupLab▲92

    Sales and customer success solution for SaaS companies

    2015 · its alternatives →

17. 17
    Let's encourage ad blocking▲92

    We check for and encourage the use of an ad blocker.

    2016 · blockads.fivefilters.org · its alternatives →

18. 18
    SuperSignups▲60

    Build trust, drive conversions, grow faster!

    2025 · its alternatives →

19. 19DW
    Detect when VIPs (investors, journalists, etc) sign up for your product▲5

    2018 · viphawk.com · its alternatives →

20. 20
    Forms by Palabra▲104

    Capture signups on your website in 2 clicks

    2020 · its alternatives →

21. 21RI
    Referlist – Increase email sign-ups via word of mouth referrals▲70

    Hi there HN! Excited to share Referlist (https://referlist.co/), a simple way to increase sign-ups on your landing page for pre-product launches. Give your users early access to your product when they share it with their friends! I make A LOT of landing pages. Whenever I want to test an idea, I'll make a website with a sign-up form to see how excited people are about a concept. I wanted to encourage word of mouth growth and incentivize my users to share these sites with their friends. Robinhood was able to amass nearly one million sign-ups via their referral program, so I…

    2019 · its alternatives →

22. 22
    Let's Rally▲63

    Blast out invites to your contacts without typing out a text

    2019 · apps.apple.com · its alternatives →

23. 23
    FakesBlocker▲65

    Find and block impersonator accounts/bots on Twitter!

    2018 · its alternatives →

24. 24
    Been® Choice▲65

    Block Ads within apps (FB, Yahoo & NYT) and earn rewards

    2015 · apps.apple.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 →