Top 10 Anti-spam Open-Source Projects

• base64Captcha

  0 1,454 1.8 Go

  captcha of base64 image string

• django-simple-captcha

  2 1,236 5.9 Python

  Django Simple Captcha is an extremely simple, yet highly customizable Django application to add captcha images to any Django form.

  Project mention: Do you guys use reCaptcha (or a similar system)? Which version/product do you use? | reddit.com/r/django | 2021-10-02

  I developed and maintain django-simple-captcha, which makes it dead simple to add captchas to any Django form.

• SonarLint

  www.sonarlint.org

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• invisible_captcha

  1 933 1.3 Ruby

  :honey_pot: Unobtrusive and flexible spam protection for Rails apps

  Project mention: Rails application boilerplate for fast MVP development | dev.to | 2021-08-06

  add invisible_captcha

• phpMussel

  0 372 4.2

  PHP-based anti-virus anti-trojan anti-malware solution.

  

• friendly-challenge

  1 284 7.3 TypeScript

  The widget and docs for the proof of work challenge used in Friendly Captcha. Protect your websites and online services from spam and abuse with Friendly Captcha, a privacy-first anti-bot solution.

  

  Project mention: Business owners with contact me website pages: What is your "self host" captcha solution? | reddit.com/r/selfhosted | 2022-02-14

  I'm personally looking forward to using FriendlyCaptcha or something of that sort, that does a small PoW calculation.

• Raid-Protect-Discord-Bot

  1 172 4.7 Python

  A Discord Bot that allows you to protect your Discord server with captcha, anti profanity, anti nudity image, anti spam, account age required, logs...

  Project mention: Discord Bot that allows you to protect your Discord server with captcha, anti profanity, anti nudity image, anti spam, account age required, logs... | reddit.com/r/coolgithubprojects | 2021-09-02

• spamscanner

  3 156 3.0 JavaScript

  Spam Scanner is the best anti-spam, email filtering, and phishing prevention service.

  

  Project mention: Ask HN: Spammers got smarter or Gmail is no longer good? | news.ycombinator.com | 2022-01-25

  Same problem as well; there are so many attack vectors it's absurd.

  I've tried rspamd, SpamAssassin, and so many other alternatives. Then I decided to try writing my own in JS.

  Spam Scanner (work in progress) is at https://spamscanner.net with source code at https://github.com/spamscanner. Trying to do it in a privacy-focused way, which is incredibly challenging to say the least.

  Fortunately we're thinking that with ARF in combination with human curators (privacy-focused where sensitive data is redacted during curation process), and a combination of tech - will make this at least a bit better - and completely open source too.

  We're in the progress of building an SMTP alternative, so we're not just a forwarding service (Forward Email at https://forwardemail.net) - and I hope to have Spam Scanner hooked in to individual inboxes as well, so it gets smarter for the individual users as opposed to group-think.

  I'm hoping that we can at least make things a bit smarter with some scrappy measures over time. Hoping to launch SMTP by April so you can use Thunderbird, Apple Mail, or K-9 for instance with your own inbox running Spam Scanner.

• Scout APM

  scoutapm.com

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  Less time debugging, more time building. Scout APM allows you to find and fix performance issues with no hassle. Now with error monitoring and external services monitoring, Scout is a developer's best friend when it comes to application development.

  

• CIDRAM

  0 94 9.1 PHP

  CIDRAM: Classless Inter-Domain Routing Access Manager.

  

• UTMFW

  1 79 6.9 PHP

  UTM Firewall on OpenBSD

  Project mention: Firewalls; old and stable, or next generation | reddit.com/r/sysadmin | 2021-06-01

  Look at the UTMFW project: https://github.com/sonertari/UTMFW

• django-simple-spam-blocker

  0 24 0.0 Python

  Simple spam blocker for Django

Anti-spam related posts

• Spam Scanner: Mejor servicio de antispam, filtrado de correo electrónico y prevención de phishing 🛡💯
  1 project | reddit.com/r/u_esgeeks | 31 Dec 2021
• Do you guys use reCaptcha (or a similar system)? Which version/product do you use?
  3 projects | reddit.com/r/django | 2 Oct 2021
• ProtonMail: open-source or reCAPTCHA?
  4 projects | reddit.com/r/opensource | 29 May 2021
• open source alternative to friendlycaptcha.com ?
  1 project | reddit.com/r/selfhosted | 15 May 2021
• install gem invisible_captcha with devise
  1 project | dev.to | 3 Mar 2021

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