Showing 508 open source projects for "email"

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  • 1
    EGroupware

    EGroupware

    Web based groupware server written in PHP

    EGroupware is a web-based groupware solution for enterprise collaboration and productivity. It combines project management, email, calendaring, CRM, and file sharing in one open-source platform. EGroupware is designed for medium to large organizations looking for a self-hosted alternative to Microsoft 365 or Google Workspace.
    Downloads: 10 This Week
    Last Update:
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  • 2
    Loomio

    Loomio

    Make better decisions together

    ...It is a collaborative decision-making tool that makes it easy for anyone to participate in decisions, and helps groups make the best decisions together. No need for tedious meetings and endless email chains-- with Loomio people can participate on the web, email or mobile, in their own time. Loomio adapts to various discussion formats and styles, and offers effective polling and decision-making tools so your group can always decide your next steps fast, firmly and fairly.
    Downloads: 8 This Week
    Last Update:
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  • 3
    OpenSign

    OpenSign

    The free & Open Source DocuSign alternative

    Welcome to OpenSign, the premier open source docusign alternative - document e-signing solution designed to provide a secure, reliable and free alternative to commercial esign platforms like DocuSign, PandaDoc, SignNow, Adobe Sign, Smartwaiver, SignRequest, HelloSign & Zoho sign. Our mission is to democratize the document signing process, making it accessible and straightforward for everyone.
    Downloads: 6 This Week
    Last Update:
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  • 4
    FreeScout Help Desk

    FreeScout Help Desk

    Free self-hosted help desk & shared mailbox

    ...It provides a lightweight, self-hosted alternative to SaaS help desk solutions, allowing users to manage support tickets, track customer inquiries, and collaborate within a team. FreeScout supports multi-channel communication, including email integration and automated responses, making it a versatile tool for customer service.
    Downloads: 9 This Week
    Last Update:
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  • 5
    Traq

    Traq

    Project management and issue tracking system written in PHP

    Traq is a PHP-powered project management and issue-tracking system designed for multi-project and milestone-driven workflows. It supports email notifications, custom fields, and per-project permissions. Ideal for teams wanting a simple, self-hosted tool, it runs on PHP 8.1+ with MariaDB/MySQL
    Downloads: 5 This Week
    Last Update:
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  • 6
    SendGrid C#

    SendGrid C#

    The Twilio SendGrid C# API Library

    ...This way you can change your Twilio SendGrid API key without changing your code. Also, we strongly advise against storing sensitive data directly in your code. Integrate in minutes with our email API and trust your emails reach the inbox. Build meaningful connections with smart email marketing. Seamlessly integrate with our partners and major platforms. Create emails with HTML code, a drag-and-drop editor, or a combination of both. Engage contacts with approachable, time-saving automation.
    Downloads: 6 This Week
    Last Update:
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  • 7
    OpenSign

    OpenSign

    🔥 The free & Open Source DocuSign alternative

    The premier open source document signing solution (DocuSign alternative). Welcome to OpenSign, the premier open source docusign alternative - document e-signing solution designed to provide a secure, reliable and free alternative to commercial esign platforms like DocuSign, PandaDoc, SignNow, Adobe Sign, Smartwaiver, SignRequest, HelloSign & Zoho sign. Our mission is to democratize the document signing process, making it accessible and straightforward for everyone.
    Downloads: 6 This Week
    Last Update:
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  • 8
    Krayin CRM

    Krayin CRM

    Free & Opensource Laravel CRM solution for SMEs and Enterprises

    Krayin CRM is a hand-tailored CRM framework built on some of the hottest open-source technologies such as Laravel (a PHP framework) and Vue.js a progressive Javascript framework. Free & Opensource Laravel CRM solution for SMEs and Enterprises for complete customer lifecycle management. We also have a forum for any type of concerns, feature requests, or discussions. Please visit: Krayin CRM Forums.
    Downloads: 7 This Week
    Last Update:
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  • 9
    Ghost

    Ghost

    The world’s most popular open source headless Node.js CMS

    ...Ghost allows writers, podcasters and other online content creators to quickly and easily set up their own sites, publish content on their own terms and deliver newsletters online. Ghost is a powerful platform that gives you complete control over design, content, delivery, experience and more. It’s got built-in SEO features, email newsletters, and works with hundreds of tools that can help speed up your workflow. It’s also great for entrepreneurs as it has the ability to create sustainable membership businesses.
    Downloads: 8 This Week
    Last Update:
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  • 10
    NocoDB

    NocoDB

    Open Source Airtable Alternative

    ...Invite your team with fine-grained Access Control. Share views publicly and also with password protection. Build automation with you favorite apps: Microsoft Teams Slack, Discord, Whatsapp, Twilio, Email & SMS.
    Downloads: 56 This Week
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  • 11
    Invoice Ninja

    Invoice Ninja

    Free and Open Source Invoicing, Expenses & Time-Tracking

    Invoice Ninja is a free and open source invoicing, expenses and time-tracking app built with Laravel and Flutter. It offers a plethora of great features, including custom branded invoice design, recurring invoicing and auto-bill clients, real-time quote creation and custom proposals, expense reporting and so much more! Invoice Ninja is also capable of handling online payments from more than 40 payment gateways, including Stripe, PayPal and WePay. It also accepts payments using credit cards,...
    Downloads: 16 This Week
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  • 12
    DocuSeal

    DocuSeal

    Open source DocuSign alternative

    ...Build fillable document forms using our pixel-perfect HTML API, reducing the time for creating personalized documents. DocuSeal Pro users can connect their Gmail or Outlook accounts to send all signing invitation emails from their connected email address under a custom domain. All email messages sent via DocuSeal are customizable. With our step-by-step form users have a smooth signing experience on small mobile screens. Also, you can upload documents and request signatures directly from your device.
    Downloads: 8 This Week
    Last Update:
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  • 13
    EspoCRM

    EspoCRM

    EspoCRM – Open Source CRM Application

    EspoCRM is a flexible, open-source Customer Relationship Management (CRM) platform that allows businesses to manage customer interactions, sales pipelines, marketing activities, and support processes. It is designed to be lightweight and user-friendly, with a modern web interface and strong customization capabilities. EspoCRM supports a wide range of modules and is suitable for small to medium-sized businesses looking for a self-hosted CRM solution that can be tailored to their needs.
    Downloads: 17 This Week
    Last Update:
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  • 14
    Manage events on a Google Calendar

    Manage events on a Google Calendar

    Manage events on a Google Calendar

    ...Head over to Google API console and click "Select a project" in the header. You can give the service account a name. You can name it anything you’d like. In the service account id you’ll see an email address. We’ll use this email address later on in this guide. Select "JSON" as the key type and click "Create" to download the JSON file. You will get a warning that the service account does not have a role, you can safely ignore this and create the service account without assigning a role. Head over to Google Calendar and view the settings of the calendar you want to work with via PHP. ...
    Downloads: 6 This Week
    Last Update:
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  • 15
    SuiteCRM

    SuiteCRM

    SuiteCRM - Open source CRM for the world

    SuiteCRM is an open-source customer relationship management (CRM) software that serves as an alternative to proprietary CRM solutions. It offers a wide range of features for managing customer interactions, sales processes, and marketing campaigns. SuiteCRM is modular and highly customizable, making it suitable for businesses of all sizes looking to manage customer data efficiently.
    Downloads: 8 This Week
    Last Update:
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  • 16
    Rallly

    Rallly

    Rallly is an open-source scheduling and collaboration tool

    Rallly is an open-source scheduling tool that helps groups find the best date to meet. Inspired by Doodle, it allows users to create polls where participants can vote on preferred dates without requiring an account. With a modern, responsive interface and built using Next.js and PostgreSQL, Rallly is lightweight, easy to self-host, and privacy-focused. It supports sending invites, customizing poll settings, and managing responses in real time.
    Downloads: 10 This Week
    Last Update:
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  • 17
    Request Tracker (RT)

    Request Tracker (RT)

    Request Tracker, an enterprise-grade issue tracking system

    Request Tracker is an open-source, enterprise-grade issue and ticket tracking system. It helps organizations manage workflows, customer requests, and internal project tasks efficiently.​
    Downloads: 9 This Week
    Last Update:
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  • 18
    SolidInvoice

    SolidInvoice

    Simple and elegant invoicing solution

    SolidInvoice is a simple open source general billing manager/ invoicing application made for small businesses and freelancers. It helps you manage clients, contacts, day-to-day billing and more so you can always get paid right and on time. SolidInvoice is capable of handling recurring invoices, quotes and estimates, as well as online payments. You can receive payments from a number of different gateways such as Paypal Express, Stripe Checkout, Be2bill and more. It also supports multiple...
    Downloads: 15 This Week
    Last Update:
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  • 19
    Marketing Skills for Claude Code

    Marketing Skills for Claude Code

    Marketing skills for Claude Code and AI agents

    ...Each skill in the repository is expressed as a Markdown file that encapsulates specific marketing frameworks, workflows, and context, enabling AI agents to recognize and execute domain-targeted tasks like “analytics-tracking” setup, “seo-audit,” conversion testing plans, launch strategies, email sequence creation, and more. By incorporating these skills into an AI environment, you turn a general-purpose coding assistant into a context-aware marketing collaborator that can apply discipline-specific logic rather than generic responses.
    Downloads: 26 This Week
    Last Update:
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  • 20
    EasyAppointments

    EasyAppointments

    Easy!Appointments - Self Hosted Appointment Scheduler

    Easy!Appointments is an open-source appointment management system that helps businesses schedule and manage client appointments efficiently. It offers a web-based interface where clients can book appointments online, while administrators can manage staff schedules, services, and customer data. The system is highly customizable and can be integrated with other tools like Google Calendar, making it ideal for small businesses, clinics, and service providers.
    Downloads: 11 This Week
    Last Update:
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  • 21
    Metabase

    Metabase

    The simplest, fastest way to share business intelligence and analytics

    Metabase is the easiest way to let everyone in your company access business data and analytics, learn from it and ask questions. Even if you or your colleagues have no experience in SQL, you can easily summarize and visualize your data, share it and let your team ask questions about it. Metabase creates beautiful graphs and charts, with an easy-to-use dashboard where everyone can create, organize and share exceptionally visualized data. It supports a great number of databases, including...
    Downloads: 33 This Week
    Last Update:
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  • 22
    Dittofeed

    Dittofeed

    Open-source customer engagement

    An open-source self-hosted alternative to marketing automation platforms like Braze and Iterable, enabling customer engagement workflows.
    Downloads: 3 This Week
    Last Update:
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  • 23
    Budget

    Budget

    Get a grip on your finances

    ...Budget also provides reporting tools that generate visual insights such as weekly balances and category breakdowns, helping users understand trends over time. Additional features such as receipt uploads and email summaries enhance usability and provide a more complete financial tracking experience.
    Downloads: 0 This Week
    Last Update:
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  • 24
    Keila

    Keila

    Open Source Newsletter Tool

    Keila is a fully open-source newsletter platform designed as a self-hosted alternative to services like Mailchimp or Sendinblue. It enables users to create and manage email campaigns, build customizable signup forms, and handle subscriber lists. Keila supports using a personal SMTP inbox for small-scale newsletters or integrating with major transactional email providers—AWS SES, Sendgrid, Mailgun, Postmark—for larger deployments. It offers a sleek WYSIWYG editor for campaign creation, version 0.17 adding features like mobile/desktop preview, preview emails, French localization, API enhancements, external contact IDs, and update notifications. ...
    Downloads: 0 This Week
    Last Update:
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  • 25
    Warracker

    Warracker

    Self-hostable warranty tracker to monitor expirations, store receipts

    ...Instead of scattering receipts, expiration dates, and warranty details across paper files or spreadsheets, Warracker lets users organize all of that information with detailed records for each product, including purchase dates, durations, and associated documentation like images or PDFs. It includes proactive notifications for upcoming expirations via various push or email services, robust search and filtering to quickly find warranties by product name or serial number, and the ability to handle multiple serial numbers per product. Designed for self-hosting with Docker and containerization support, the platform is mobile-friendly and supports multi-user environments with role-based access control and optional single sign-on through providers like Google or GitHub.
    Downloads: 10 This Week
    Last Update:
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