Anti-Spam Tools

Open-source service offering unlimited anonymous email aliases, encrypted forwarding, spam protection, and anonymous replies to keep your identity private.

Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work.

Blocks unwanted calls & SMS without replacing your default app. Features regex, contact, STIR, and dialed number filtering, plus time scheduling.

Tired of spam filling your inbox? This tool offers a quick solution by generating temporary, disposable email addresses (temp mail). Just copy your assigned address or create a new one, and you'll immediately start receiving emails in your disposable inbox that is shown...

We all make many online accounts, but most of them are linked to 1 or 2 of our email addresses. This means if just one account is hacked or tracked, every other account and its associated data is now also at risk.

Saracroche: The simple and effective solution to stop unwanted calls! A simple interface that's ideal for peace of mind. Just activate it... and that's it, you can forget about it. The app automatically blocks unwanted numbers without any complex configuration. No data is shared.

Open source solution to protect your personal email address. Generous free plan with uncapped bandwidth and infinite sends/replies, self-hostable, lot of powerful features, open roadmap, you can count on SimpleLogin to guard your email inbox.

reCAPTCHA is a free service that protects your site from spam and abuse, using risk analysis techniques to tell humans and bots apart.

YOPmail’s free, quick and feature rich service guards you against spam, phishing and other online abuses. Protect your actual email, instead use YOPmail’s disposable one to sign-up wherever you want. YOPmail creates temporary inboxes of your choice instantaneously.

ClearOS is a family of operating systems for the enterprise, small business, and home. There are three editions to choose from depending on your needs and suitable to your abilities. They are: ClearOS Enterprise, ClearOS Home, and ClearOS Core.

AdGuard Mail is a service that allows you to receive emails without revealing your personal email address to the sender.

Prosopo Procaptcha redefines user verification with a unique approach that emphasizes privacy and security. It's a pioneering solution designed to offer an alternative to conventional CAPTCHA systems that often compromise user privacy.

Private Captcha is an independent, privacy-first, self-hostable Proof-of-Work CAPTCHA service made in EU. Instead of asking users to solve complex puzzles or track their behavior, Private Captcha solves an invisible cryptographic task in the background.

Automatically block 99% spam text messages using on-device AI.

Tired of cluttered inboxes and unwanted emails? With InboxPurge, effortlessly unsubscribe from and archive unwanted emails, manage your email senders, and enjoy a cleaner, streamlined Gmail experience.

Say Goodbye to comment spam on your WordPress blog or website. Antispam Bee blocks spam comments and trackbacks effectively, without captchas and without sending personal information to third party services. It is free of charge, ad-free and 100% GDPR compliant.

hCaptcha is designed to solve the most labor intensive problem in machine learning: labeling massive amounts of data in a timely, affordable, and reliable way.

Spamgourmet provides disposable, optionally self destructing, email addresses that get created automatically the first time they are used, forward messages, and then automatically expire after number of specified messages received.

Effortlessly block unwanted calls, spam, fraud, and robo callers with this easy-to-use app that requires no access to personal data and has no ads.

ALTCHA is a privacy-first solution built to help developers and website owners stop bots, spam, and automated abuse — without making things harder for real users. It replaces traditional CAPTCHA systems with a smarter, quieter approach to verification and threat detection.

A no-nonsense CAPTCHA system with seamless UX | Backend component.

SaneBox is an email filtering service that manages email overload with features like one-click unsubscribe and email reminders. It ensures only critical emails appear in your inbox, while others are sorted into folders for later viewing.

mosparo is the modern solution for protecting your online forms from spam. The protection method is quite simple: mosparo blocks spam using rules matching the form’s data. The detection method is comparable to an e-mail spam filter.

Moakt is a temporary mail that expires after an hour from the time it is created. Before expiring, you can use the email and receive emails as if they arrived to your inbox. In this one hour, the email you created is yours and no one will be able to use it but you.

This application both blocks unwanted calls and SMS, and helps manage a blacklist. Easy and lightweight, it does not consume any of your device's battery power.