Search Results for "email security"
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Showing 421 open source projects for "email security"
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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. -
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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. -
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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. ... -
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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. -
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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. ... -
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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. -
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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... -
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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. ... -
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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. -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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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. -
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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. ... -
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pwnedOrNot
Check breached emails and find exposed passwords from public dumps
pwnedOrNot is an open source OSINT tool designed to investigate whether an email address has been compromised in known data breaches and to identify exposed credentials associated with that account. The tool works by interacting with the HaveIBeenPwned (HIBP) API to determine if a given email address appears in breach databases. If the email is found in a breach, the tool proceeds to search for associated passwords within publicly available data dumps. -
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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... -
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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. ... -
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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... -
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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,... -
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H4X-Tools
A modular, terminal-based toolkit for OSINT, reconnaissance
...The project organizes multiple research utilities behind an interactive menu and direct command-line options. Its tools cover areas such as Instagram profile research, web reconnaissance, phone lookup, IP lookup, username search, email search, leak intelligence, port scanning, WHOIS lookup, web scraping, directory discovery, Bluetooth scanning, and local user enumeration. The toolkit is designed to be extensible, so contributors can add new tools by creating modules that follow its BaseTool structure. It is intended for educational and authorized security research only, not for use against systems or accounts without permission. -
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linkedin2username
Generate probable usernames from LinkedIn company employee lists
...It logs into LinkedIn using valid user credentials and collects publicly visible employee names associated with a specified organization. Using these names, it automatically generates multiple possible username formats that organizations commonly use for accounts or email addresses. This process helps security researchers, penetration testers, and investigators perform reconnaissance by building potential username lists for further security testing or OSINT analysis. Unlike tools that rely on official APIs, linkedin2username operates as a pure web scraper and therefore does not require API keys. The script uses Selenium to automate browser interactions and perform searches within LinkedIn to gather employee data. -
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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. -
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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... -
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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. -
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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. -
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Agentic Inbox
A self-hosted email client with an AI agent, running entirely on Cloud
Agentic Inbox is a self-hosted email client that integrates an AI agent directly into the inbox experience, enabling automated reading, organization, and drafting of emails. It runs entirely on Cloudflare Workers, using serverless infrastructure to manage incoming and outgoing messages without relying on external email services. Each mailbox is isolated with its own storage, ensuring data separation and security while maintaining performance. -
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Ory Kratos
Next-gen identity server with Ory-hardened authentication
Headless and configurable authentication and user management, including MFA, social login, custom identities and more. Ory Kratos is a fully featured user management system built for the cloud. Control every aspect with a headless API. Ory Kratos comes with support for a wide range of 2FA protocols such as TOTP, FIDO2 & WebAuthn, works with any UI framework, and only a few lines of code are required to get it up and running. Configurable login and registration flows, multi-factor... -
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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.
