Open-source email software
415 open-source libraries, tools and applications tagged email, ranked by how closely email is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
415 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| rememberber/WePush WePush is a focused bulk message-pushing tool supporting WeChat template/customer messages, SMS providers (Alibaba, Tencent, Huawei, Baidu,… | 95 | 4686 | active |
| hestiacp/hestiacp Hestia Control Panel is an open-source, lightweight web hosting control panel for Linux servers that provides a web and CLI interface for m… | 98 | 4530 | active |
| astriaai/headshots-starter An open-source Next.js starter kit that generates professional AI headshots from user-uploaded selfies using Astria.ai's fine-tuning and in… | 37 | 4460 | active |
| Easy!Appointments Easy!Appointments is a self-hosted, open-source online appointment scheduling platform built with PHP and JavaScript. It lets businesses ma… | 80 | 4417 | stable |
| jamesmh/coravel Coravel is a near-zero configuration .NET library that provides task/job scheduling, in-memory queuing, caching, event broadcasting, and ma… | 34 | 4287 | active |
| ginobefun/BestBlogs BestBlogs.dev is an AI-powered personal reading assistant and content curation platform that aggregates articles, podcasts, videos, tweets,… | 64 | 4053 | active |
| arikchakma/maily.to Maily is a powerful, opinionated WYSIWYG email editor built on Tiptap and React, offering pre-designed, mobile-ready components for craftin… | 73 | 3976 | active |
| yetone/cumora Cumora is a cross-platform team chat application where AI agents participate as first-class teammates alongside humans, with personas, memo… | 77 | 3934 | active |
| gnekt/My-Brain-Is-Full-Crew A crew of 8+ AI agents with 14 specialized skills that manages an Obsidian vault through conversational chat, handling knowledge organizati… | 52 | 3874 | active |
| joschan21/digitalhippo DigitalHippo is a fullstack e-commerce marketplace application for digital products, built with Next.js 14 App Router, tRPC, TypeScript, Pa… | 27 | 3864 | active |
| async-labs/builderbook An open-source full-stack web application for self-publishing and selling books or other online content, built with React, Next.js, Materia… | 34 | 3792 | active |
| chaskiq/chaskiq Chaskiq is a full-featured, source-available live chat, support, and marketing platform serving as an alternative to Intercom, Drift, and C… | 60 | 3573 | active |
| mlogclub/bbs-go bbs-go is a lightweight, self-hosted community platform for building forums, Q&A sites, and knowledge bases, built with a Go backend and Re… | 92 | 3481 | active |
| espocrm/espocrm EspoCRM is a free, open-source CRM web application with a PHP REST API backend and a single-page application frontend. It manages leads, co… | 98 | 3478 | stable |
| frappe/helpdesk Frappe Helpdesk is a free, open-source customer support and ticket management application built on the Frappe Framework with a Vue 3 fronte… | 99 | 3430 | active |
| taylorwilsdon/google_workspace_mcp A comprehensive Model Context Protocol (MCP) server and CLI tool that gives AI assistants like Claude and ChatGPT full natural-language con… | 83 | 3377 | active |
| Freenom Auto Renewal A PHP script that automatically renews free Freenom domain names before they expire, deployable via Docker or various cloud platforms. It s… | 72 | 3331 | active |
| aliasvault/aliasvault AliasVault is a privacy-first, end-to-end encrypted password manager with a built-in email alias server, letting users create unique identi… | 86 | 3164 | active |
| WecomTeam/wecom-cli The official WeCom (WeChat Work) command-line tool written in Rust, letting humans and AI agents operate WeCom from the terminal. It covers… | 58 | 3153 | active |
| supermemoryai/apple-mcp An MCP (Model Context Protocol) server exposing Apple-native apps on macOS—Messages, Notes, Contacts, Mail, Reminders, Calendar, and Maps—a… | 10 | 3124 | active |
| acl-dev/acl Acl is a cross-platform C/C++ network communication library and server programming framework supporting Linux, Windows, macOS, FreeBSD, And… | 86 | 3103 | stable |
| mickasmt/next-saas-stripe-starter An open-source SaaS starter template built with Next.js 14, Prisma, Neon Postgres, Auth.js v5, Stripe, Resend, React Email, and Shadcn/ui. … | 18 | 3004 | active |
| crbnos/carbon Carbon is an open-core manufacturing operating system combining ERP, MES, and QMS functionality in a single web application built on Supaba… | 70 | 2749 | active |
| bcosca/fatfree Fat-Free Framework (F3) is a lightweight PHP micro-framework condensed into a single file for building dynamic web applications quickly. It… | 78 | 2716 | stable |
| Peergos Peergos is a peer-to-peer, end-to-end encrypted global filesystem with fine-grained cryptographic access control, built on IPFS/libp2p with… | 76 | 2530 | active |
| edavis10/redmine Redmine is a flexible, self-hosted project management web application written in Ruby on Rails. It provides issue tracking, Gantt charts, w… | 32 | 2437 | stable |
| nz-m/SocialEcho SocialEcho is a full-featured social networking platform built on the MERN stack (MongoDB, Express.js, React.js, Node.js) with automated co… | 31 | 2433 | active |
| learnhouse/learnhouse LearnHouse is a next-generation open-source learning management system (LMS) for creating, sharing, and selling educational content. It com… | 100 | 2404 | active |
| 1backend/1backend 1Backend is an AI-native microservices platform written in Go that combines a framework, proxy, and runtime for building distributed applic… | 70 | 2349 | active |
| twikoojs/twikoo Twikoo is a simple, safe, and free comment system designed for static websites, deployable via Tencent CloudBase, Vercel, or private server… | 100 | 2304 | active |
| ladjs/lad Lad is a Node.js MVC web framework built on Koa, created by a former Express TC and Koa team member. It provides an opinionated full-stack … | 44 | 2286 | active |
| oiov/wr.do WR.DO is a self-hostable all-in-one domain services platform built with Next.js that bundles short link generation, unlimited domain-based … | 71 | 2279 | active |
| apache/poi Apache POI is a Java library for reading and writing Microsoft Office documents in both OLE2 binary formats (XLS, DOC, PPT) and Office Open… | 76 | 2277 | stable |
| mailpile/Mailpile Mailpile is a free, open-source, privacy-focused email client with built-in PGP encryption, a fast custom search engine, and tag-based orga… | 23 | 8811 | maintenance |
| pydio/cells Pydio Cells is a self-hosted, open-core document sharing, collaboration and management platform written in Go with a microservice architect… | 97 | 2253 | active |
| ThinkCMF ThinkCMF is an open-source content management framework built on ThinkPHP 8, supporting both PHP-FPM and Swoole modes. It provides a multi-… | 43 | 2158 | active |
| Crater Crater is an open-source, self-hosted invoicing application for individuals and businesses, built with Laravel and Vue.js, with companion R… | 23 | 8352 | maintenance |
| towfiqi/serpbear SerpBear is an open-source, self-hosted search engine position tracking app for monitoring website keyword rankings in Google. It scrapes S… | 77 | 2096 | active |
| jsdecena/laracom Laracom is a free, open-source e-commerce application built on the Laravel PHP framework, providing a storefront and admin panel with produ… | 77 | 2040 | active |
| foundation/foundation-emails Foundation for Emails (formerly Ink) is an HTML/CSS framework for building responsive HTML emails that render consistently across email cli… | 72 | 7791 | maintenance |
| jstedfast/MimeKit MimeKit is a C#/.NET library for creating and parsing MIME email messages, with support for S/MIME, OpenPGP, DKIM, ARC, TNEF, and Unix mbox… | 77 | 2008 | stable |
| Daptin Daptin is a self-hosted Go application server that turns declarative schema definitions into permission-aware JSON:API and GraphQL CRUD bac… | 99 | 1898 | active |
| kingwrcy/moments Moments is a minimalist self-hosted social sharing application (a 'WeChat Moments' style microblog) written in Go with a SQLite backend. It… | 62 | 1884 | active |
| rampatra/wedding-website A responsive, feature-rich wedding website template built with HTML, Sass, and Gulp. It includes an RSVP form that saves responses to Googl… | 40 | 1832 | stable |
| mantisbt/mantisbt MantisBT is an open-source, self-hosted web-based bug tracker and issue management system written in PHP. It offers per-project role-based … | 77 | 1809 | stable |
| glidea/zenfeed zenfeed is a self-hosted AI-powered RSS reader and information hub built in Go. It aggregates RSS feeds, uses LLMs to filter, summarize, an… | 62 | 1716 | active |
| Elgg/Elgg Elgg is an open-source rapid development framework for building socially aware web applications, written in PHP with MySQL. It provides a m… | 99 | 1677 | active |
| robocorp/rpaframework RPA Framework is a collection of open-source Python libraries and tools for Robotic Process Automation, usable from both Robot Framework an… | 94 | 1570 | active |
| SteveSuv/remix-words-funny A fullstack English vocabulary study website built with the Remix T3 stack (react-router v7, tRPC, Drizzle, PostgreSQL, HeroUI). It ships w… | 65 | 1518 | active |
| Jetzig Jetzig is a full-featured web framework written in pure Zig for building modern web applications. It provides file system-based routing, HT… | 62 | 1514 | active |
| polonel/trudesk Trudesk is an open-source help desk and ticketing application built with NodeJS and MongoDB. It provides real-time tickets, agent-customer … | 56 | 1496 | active |
| sassanix/Warracker Warracker is an open-source, self-hosted web application for tracking product warranties, expiration dates, and related documents like rece… | 69 | 1492 | active |
| laochiangx/Common.Utility A large collection of C# utility and helper classes covering common .NET development tasks such as Excel/CSV/PDF handling, HTTP requests, J… | 32 | 5300 | maintenance |
| kirilkirkov/Ecommerce-CodeIgniter-Bootstrap A self-hosted, responsive multi-vendor and multilingual online store platform built on CodeIgniter 3 and Bootstrap. It provides a complete … | 72 | 1436 | active |
| GauravSingh9356/J.A.R.V.I.S A Python-based voice-controlled personal assistant inspired by Iron Man's J.A.R.V.I.S. It combines speech recognition, text-to-speech, OCR,… | 44 | 1415 | active |
| anypost/emailmd emailmd is a TypeScript library and CLI that converts markdown into responsive, email-safe HTML (via MJML) that renders correctly across Gm… | 82 | 1380 | active |
| firecrawl/open-scouts Open Scouts is an AI-powered web monitoring platform where users create automated 'scouts' that run on a schedule to search the web and sen… | 51 | 1373 | active |
| chnirt/nestjs-graphql-best-practice A NestJS boilerplate codebase built on Express, TypeORM, Apollo GraphQL, and MongoDB that demonstrates real-world patterns such as CRUD mod… | 59 | 1372 | active |
| CoderWanFeng/python-office python-office is a Python office-automation library that wraps PDF, Word, Excel, PPT, image, video, email, WeChat, and OCR operations behin… | 63 | 1358 | active |
| ddvk/rmfakecloud A self-hosted replacement for the reMarkable cloud that lets users sync and back up their reMarkable tablet documents on their own infrastr… | 79 | 1356 | active |
| ltb-project/self-service-password Self Service Password is a PHP web application that lets users change and reset their own passwords in an LDAP directory, including Active … | 93 | 1347 | stable |
| picosh/pico pico is a suite of SSH-powered developer services including static site hosting (pgs), localhost tunnels (tuns), SSH pub/sub pipes, a markd… | 95 | 1344 | active |
| GlassHaven/Haven Haven is a free, open-source (AGPL-3.0) remote access and mobile workspace app for Android written in Kotlin. It combines SSH/Mosh terminal… | 79 | 1339 | active |
| sylar-yin/sylar Sylar is a high-performance C++ server framework built around user-space coroutines (fibers) with modules for logging, configuration, threa… | 32 | 4720 | maintenance |
| jsreport jsreport is an open-source JavaScript-based reporting platform and server for designing and rendering reports using templating engines like… | 95 | 1321 | stable |
| linagora/cozy-stack Cozy-stack is the core backend server of the Cozy/Twake Workplace personal cloud platform, written in Go. It serves user-installed web apps… | 100 | 1268 | active |
| faveosuite/faveo-helpdesk Faveo Helpdesk is an open-source, self-hosted customer support and ticketing system built on the Laravel PHP framework. It helps businesses… | 67 | 1255 | active |
| owen2345/camaleon-cms Camaleon CMS is a dynamic and advanced content management system built on Ruby on Rails, designed as a flexible alternative to WordPress fo… | 92 | 1237 | active |
| Attendize/Attendize Attendize is an open-source ticket selling and event management platform built on the Laravel PHP framework. It lets event organisers sell … | 23 | 4282 | maintenance |
| Combodo/iTop iTop (IT Operations Portal) is an open-source, web-based IT service management (ITSM) platform built in PHP, featuring a fully customizable… | 94 | 1198 | stable |
| DMOJ Online Judge DMOJ is a modern open-source online judge and contest platform for hosting programming competitions and practice problems. It supports sand… | 67 | 1193 | active |
| aizhimou/pigeon-pod PigeonPod is a self-hosted application that converts YouTube and Bilibili channels and playlists into private podcast RSS feeds, downloadin… | 78 | 1190 | active |
| wa8n/wblog wblog is a self-hosted personal blog application written in Go, built on the Gin web framework and GORM ORM with SQLite or MySQL storage. I… | 70 | 1187 | stable |
| oblac/jodd Jodd is a collection of lightweight Java micro-frameworks and utility libraries with zero external dependencies, including a DI container (… | 23 | 4049 | maintenance |
| puemos/craftplan Craftplan is a self-hosted, open-source ERP application for small-scale artisanal manufacturers and craft D2C businesses. Built with Elixir… | 84 | 1150 | active |
| GamehunterKaan/AutoPWN-Suite AutoPWN Suite is a Python-based automated vulnerability scanning and exploitation framework that wraps nmap for host discovery, version-bas… | 100 | 1142 | active |
| awspring/spring-cloud-aws Spring Cloud AWS is a community-maintained Spring and Spring Boot integration project for AWS managed services such as S3, SQS, SNS, Dynamo… | 93 | 1123 | active |
| Kylsky/chatgpt-team-helper A self-hosted one-stop platform for managing ChatGPT Team accounts, supporting multi-channel order integration (Xiaohongshu, Xianyu, Linux … | 57 | 1121 | active |
| novoid/Memacs Memacs is a Python toolset that extracts metadata from various digital data sources (emails, files, git commits, photos, etc.) and converts… | 66 | 1112 | active |
| RamonSilva20/mapos Map-OS is an open-source web application for managing service orders (ordens de serviço), built in PHP on the CodeIgniter framework. It pro… | 97 | 1109 | active |
| Buggregator Buggregator is a self-contained debugging server for PHP applications, rewritten in Go as a single ~30 MB binary with an embedded web UI, W… | 92 | 1079 | active |
| ali-bouali/book-social-network Book Social Network (BSN) is a full-stack social network application for exchanging and borrowing books among members. It combines a Spring… | 26 | 1059 | active |
| spatie/laravel-failed-job-monitor A Laravel package that sends notifications via mail and Slack when a queued job fails, hooking into Laravel's JobFailed event and native no… | 76 | 1056 | active |
| dropseed/plain Plain is a Python web framework for building database-backed applications, originally forked from Django and redesigned around explicit, ty… | 75 | 1044 | active |
| pkp/ojs Open Journal Systems (OJS) is an open-source PHP web application developed by the Public Knowledge Project for managing and publishing scho… | 77 | 1042 | stable |
| opensupports/opensupports OpenSupports is a free and open-source, self-hostable helpdesk ticketing web application built with PHP and JavaScript on MySQL. It lets cu… | 23 | 1038 | active |
| Public Lab Plots2 plots2 is the Ruby on Rails content management system powering PublicLab.org, combining a research blog, wiki, Q&A portal, and tagging-base… | 44 | 1023 | active |
| Padrino Padrino is a full-stack Ruby web framework built on top of Sinatra, adding generators, routing, an admin interface, mailer, caching, and au… | 77 | 3404 | maintenance |
| dcnetio/web-dc-api web-dc-api is a browser-based decentralized application SDK that unifies wallet-based identity, private user databases, shared key-value st… | 77 | 927 | active |
| vercel/kirimase Kirimase is a command-line tool for building full-stack Next.js apps faster, inspired by the Ruby on Rails CLI. It installs and configures … | 23 | 2786 | maintenance |
| mrvautin/expressCart expressCart is a fully functional, self-hosted Node.js shopping cart application built on Express, with an admin panel and support for many… | 32 | 2251 | maintenance |
| Ascotbe/Medusa Medusa is a self-hosted red team arsenal platform written in Python that bundles tools such as an XSS platform, collaborative platform, CVE… | 23 | 2239 | maintenance |
| fin3ss3g0d/evilgophish evilgophish is a Go-based framework combining evilginx3 and GoPhish for running authorized phishing and smishing campaigns with real-time c… | 32 | 2031 | maintenance |
| freeCodeCamp/chapter Chapter is a self-hosted event management web application for nonprofits, designed as an alternative to Meetup and Facebook Events. It lets… | 10 | 1920 | maintenance |
| kanwangzjm/funiture A Java Spring-based web application demonstrating a wide range of backend components: permission management, system monitoring, dynamic Qua… | 32 | 1864 | maintenance |
| Chicago Boss Chicago Boss is a Rails-inspired MVC web framework written in Erlang, featuring Django-style templates, an ORM, sessions, routing, email, J… | 23 | 1849 | maintenance |
| voidlabs/mosaico Mosaico is an open-source JavaScript library/single-page application for visually editing responsive email templates via drag and drop. Edi… | 66 | 1783 | maintenance |
| baijunyao/thinkphp-bjyadmin A ThinkPHP-based admin starter project that integrates common features and third-party SDKs (Auth/RBAC permissions, Alipay and WeChat payme… | 10 | 1755 | maintenance |
| vx3r/wg-gen-web A self-hosted web application that generates WireGuard client and server configuration files without managing the WireGuard service itself.… | 32 | 1705 | maintenance |
| karpathy/arxiv-sanity-lite A lightweight web application that periodically polls the arXiv API for new papers and lets users tag papers of interest. It recommends sim… | 32 | 1705 | maintenance |