Showing 525 open source projects for "email security"

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  • 1
    Tutanota

    Tutanota

    Open source email service with a strong focus on security and privacy

    Tutanota is an open source email client focused on security and privacy. It is built with end-to-end encryption and 2FA, so you can be assured of utmost email security. Tutanota is always encrypted, so whether you’re using their secure webmail client, mobile apps or desktop clients, you can be sure to communicate securely.
    Downloads: 14 This Week
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  • 2
    Arcjet

    Arcjet

    Arcjet JS SDKs. Rate limiting, bot protection, email verification

    Arcjet helps developers protect their apps in just a few lines of code. Implement rate limiting, bot protection, email verification, and defense against common attacks. Native security for Bun, Next.js, Node.js, SvelteKit, Vercel, Netlify, Fly.io, and other modern platforms. Customizable protection for signup forms, login pages, API routes, and your whole app. Test security rules locally. Protection that works in every environment. No agent is required.
    Downloads: 1 This Week
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  • 3
    theHarvester

    theHarvester

    E-mails, subdomains and names

    theHarvester is a very simple to use, yet powerful and effective tool designed to be used in the early stages of a penetration test or red team engagement. Use it for open source intelligence (OSINT) gathering to help determine a company's external threat landscape on the internet. The tool gathers emails, names, subdomains, IPs and URLs using multiple public data sources.
    Downloads: 56 This Week
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  • 4
    ClamAV

    ClamAV

    Antivirus engine for detecting trojans, viruses and malware

    ClamAV is an open-source antivirus engine developed by Cisco Talos that provides cross-platform malware detection for servers, desktops, and mail systems. Originally designed for Unix environments and email security, it has evolved into a flexible antimalware toolkit capable of identifying millions of viruses, worms, trojans, and other threats. The software includes a command-line scanner, an automatically updating signature database, and a scalable multi-threaded daemon that enables high-performance scanning in production environments. ...
    Downloads: 57 This Week
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  • 5
    WhatBreach

    WhatBreach

    OSINT tool for discovering email addresses in known data breaches

    ...Once breaches are discovered, WhatBreach can provide additional context such as the databases associated with those leaks and any related paste dumps containing the email address. If the breach databases are publicly available, the tool can attempt to download them for further analysis. It also supports deeper investigation of email domains and related profiles, making it useful for researchers, security analysts, and penetration testers conducting reconnaissance or breach analysis.
    Downloads: 0 This Week
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  • 6
    Blackbird

    Blackbird

    OSINT tool for finding accounts across 600+ sites by username or email

    Blackbird is an open source OSINT tool designed to search for user accounts across social networks and online platforms using a username or email address. The project focuses on helping investigators, researchers, and security professionals quickly discover where a specific identity appears on the internet. It performs reverse searches across more than 600 websites by leveraging data from the community-driven WhatsMyName project, which improves detection accuracy and reduces false positives. ...
    Downloads: 20 This Week
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  • 7
    holehe

    holehe

    Check if the mail is used on different sites

    holehe is a Python-based OSINT utility designed to determine whether a specific email address is registered across a wide range of online services. The tool works by leveraging password-reset mechanisms and other public account-existence checks to infer whether an email is associated with accounts on major platforms. It supports more than a hundred websites and is commonly used during reconnaissance, digital investigations, and account exposure assessments. holehe is designed to operate...
    Downloads: 26 This Week
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  • 8
    User Scanner

    User Scanner

    Scan usernames and emails across many platforms from the CLI

    user-scanner is a command-line OSINT tool designed to analyze the presence and availability of usernames and email addresses across many online platforms. It helps users quickly determine whether a specific username or email is already associated with accounts on social networks, developer platforms, creator communities, gaming services, and other sites. user-scanner is useful for security researchers, investigators, and analysts performing open source intelligence, as well as individuals or businesses looking for a unique username across multiple services. ...
    Downloads: 12 This Week
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  • 9
    jrean/laravel-user-verification

    jrean/laravel-user-verification

    PHP package built for Laravel 5.* & 6.* & 7.* & 8.* & 9.* & 10.*

    jrean/laravel-user-verification is a PHP package built for Laravel 5., 6., 7., 8., 9.* & 10.* to easily handle a user verification and validate the e-mail.
    Downloads: 19 This Week
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  • 10
    ObjectivePGP

    ObjectivePGP

    ObjectivePGP is an open-source library for iOS and macOS

    ObjectivePGP is an open-source library for OpenPGP encryption, decryption, signing, and verification in Objective-C and Swift. It enables developers to add PGP-based security to iOS and macOS apps.
    Downloads: 0 This Week
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  • 11
    Gpg4win

    Gpg4win

    GnuPG for Windows

    Gpg4win is the official Windows distribution of the GnuPG encryption ecosystem, providing an accessible graphical environment for secure email and file protection. It packages the GnuPG engine together with user-friendly tools such as certificate management utilities, Windows Explorer integration, and Outlook plugins, enabling encryption workflows without requiring command-line expertise. The suite supports both OpenPGP and S/MIME standards, allowing organizations and individuals to secure...
    Downloads: 18 This Week
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  • 12
    ClatScope

    ClatScope

    OSINT reconnaissance tool for IP, domain, email, and username lookups

    ClatScope is a Python-based OSINT (open source intelligence) utility designed to gather and analyze publicly available information from multiple online sources. It is primarily aimed at investigators, cybersecurity professionals, penetration testers, and researchers who need a centralized platform for reconnaissance tasks. It integrates with numerous public APIs and internet services to retrieve detailed data about IP addresses, domains, email addresses, phone numbers, usernames, and other...
    Downloads: 6 This Week
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  • 13
    Google Apps Manager

    Google Apps Manager

    Command line management for Google G Suite

    Google Apps Manager or GAM is a free and open source command line tool for Google G Suite Administrators that allows them to manage many aspects of their Google Apps Account quickly and easily. With GAM you can create and manage users, groups and domains; manage email, security and calendar settings; manage admins and organizations and many more. To use GAM Google Apps Business, Education, Partner or Government Edition is required.
    Downloads: 22 This Week
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  • 14
    Mailu

    Mailu

    Insular email distribution - mail server as Docker images

    Mailu is a simple yet full-featured mail server as a set of Docker images. It is free software (both as in free beer and as in free speech), open to suggestions and external contributions. The project aims at providing people with an easily setup, easily maintained and full-featured mail server while not shipping proprietary software nor unrelated features often found in popular groupware. Security, enforced TLS, DANE, MTA-STS, Letsencrypt!, outgoing DKIM, anti-virus scanner, Snuffleupagus,...
    Downloads: 3 This Week
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  • 15
    GnuPG

    GnuPG

    Complete and free implementation of the OpenPGP standard

    ...The software allows users to encrypt files and messages, create digital signatures, and manage cryptographic keys, making it a foundational tool for privacy-focused workflows. Because it is open source and licensed under the GNU GPL, GnuPG can be freely audited, modified, and redistributed, which has contributed to its adoption in security-sensitive environments. It is primarily command-line driven but can be integrated into email clients, messaging tools, and graphical front-ends for broader usability.
    Downloads: 4 This Week
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  • 16
    Mitaka

    Mitaka

    Browser extension for fast OSINT searches and IOC investigation

    Mitaka is a browser extension designed to streamline Open Source Intelligence (OSINT) investigations by enabling quick searches and scans directly from the browser. It allows security researchers, analysts, and investigators to easily examine various indicators of compromise (IoCs) such as IP addresses, domains, URLs, hashes, email addresses, and more. Instead of manually copying and pasting suspicious indicators into multiple intelligence platforms, users can simply highlight a value on any webpage and access multiple OSINT services through a context menu. ...
    Downloads: 6 This Week
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  • 17
    OSINT Framework

    OSINT Framework

    OSINT Framework

    ...Rather than functioning as an automated scanner, it organizes hundreds of OSINT resources into a structured, navigable interface grouped by investigation type, such as usernames, email addresses, domains, and social media. The project was originally created from an information security perspective but has since expanded to support journalists, analysts, and digital investigators across many disciplines. Its value lies in curation and discoverability, allowing users to pivot rapidly between relevant intelligence tools during investigations. ...
    Downloads: 50 This Week
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  • 18
    X-osint

    X-osint

    Open source OSINT tool for gathering data on emails, phones, and IPs

    X-osint is an open source intelligence framework designed to collect and analyze publicly available information from multiple sources. It focuses on gathering useful and credible data about entities such as phone numbers, email addresses, and IP addresses using a range of automated OSINT techniques. It provides investigators and researchers with a centralized interface for running information-gathering tasks that would normally require multiple separate tools. X-osint can also perform...
    Downloads: 42 This Week
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  • 19
    Toutatis

    Toutatis

    Extract public Instagram account information from usernames

    ...The tool can retrieve details such as profile metadata, follower counts, biography information, and other publicly accessible account attributes. In addition to basic profile data, Toutatis can also reveal contact details that may be publicly exposed, including email addresses and phone numbers associated with the account. The utility is implemented in Python and runs through a simple command-line interface, making it easy to integrate into OSINT workflows and automation scripts. Toutatis is commonly used in open source intelligence investigations, research tasks, and security analysis that involve collecting publicly available social media data.
    Downloads: 12 This Week
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  • 20
    Web-Check

    Web-Check

    All-in-one OSINT tool for analysing any website

    Comprehensive, on-demand open source intelligence for any website. Get an insight into the inner-workings of a given website: uncover potential attack vectors, analyse server architecture, view security configurations, and learn what technologies a site is using. Currently the dashboard will show: IP info, SSL chain, DNS records, cookies, headers, domain info, search crawl rules, page map, server location, redirect ledger, open ports, traceroute, DNS security extensions, site performance,...
    Downloads: 3 This Week
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  • 21
    Addy

    Addy

    Anonymous email forwarding

    ...This service supports both standard aliases that can be created on the fly and pre-generated shared domain aliases, and self-hosters can also configure custom domains to use their own email domain for aliasing. AnonAddy allows encrypted forwarding using GPG/OpenPGP for enhanced privacy, making it especially attractive for security-conscious users who want to minimize metadata leakage.
    Downloads: 0 This Week
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  • 22
    magiclinksdev

    magiclinksdev

    Transactional email magic link and One-Time Password (OTP)

    The magiclinksdev project is an authentication service for magic link and One-Time Password (OTP) use cases. There is built-in email support through Amazon SES and SendGrid.
    Downloads: 0 This Week
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  • 23
    Laravel Breeze

    Laravel Breeze

    Minimal Laravel authentication scaffolding with Blade, Vue, or React

    Breeze provides a minimal and simple starting point for building a Laravel application with authentication. Styled with Tailwind, Breeze publishes authentication controllers and views to your application that can be easily customized based on your own application's needs. Laravel Breeze is powered by Blade and Tailwind. While you are welcome to use these starter kits, they are not required. You are free to build your own application from the ground up by simply installing a fresh copy of...
    Downloads: 5 This Week
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  • 24
    Laravel Fortify

    Laravel Fortify

    Backend controllers and scaffolding for Laravel authentication

    Laravel Fortify is a frontend agnostic authentication backend implementation for Laravel. Fortify registers the routes and controllers needed to implement all of Laravel's authentication features, including login, registration, password reset, email verification, and more. You are not required to use Fortify in order to use Laravel's authentication features. You are always free to manually interact with Laravel's authentication services by following the documentation available in the...
    Downloads: 2 This Week
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  • 25
    OpenArchiver

    OpenArchiver

    An open-source platform for legally compliant email archiving

    ...The platform combines a modern web UI with powerful backend services, including fast indexing, deduplication, encryption at rest, and asynchronous ingestion workflows, making it suitable for both small teams and enterprise deployments. Beyond simply capturing email, it emphasizes security and auditability with features like secure storage formats, file integrity verification, and detailed audit trails of user interactions.
    Downloads: 1 This Week
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