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Back to sj26/mailcatcher

Projects sharing features with Mailcatcher

30 open-source projects similar to sj26/mailcatcher, ranked by shared indexed features. Tags may describe platforms or build tools rather than the same primary purpose. Check each project’s use case, license, and deployment requirements before treating it as a replacement.

  • rnwood/smtp4devrnwood avatar

    rnwood/smtp4dev

    3,817View on GitHub↗

    smtp4dev is a suite of tools featuring a mock SMTP server that intercepts outgoing email traffic and stores messages for inspection instead of delivering them to recipients. It includes a web-based viewer for inspecting email metadata, raw source code, and MIME structures, alongside a responsive email previewer that simulates how HTML emails appear across different viewport sizes and device layouts. The project provides a traffic analyzer to log protocol interactions and session data for debugging delivery failures. It also operates as a TLS SMTP server, supporting encrypted connections via T

    C#linuxmacosxsmtp-server
    View on GitHub↗3,817
  • mailhog/mailhogmailhog avatar

    mailhog/MailHog

    15,784View on GitHub↗

    MailHog is an email testing tool that functions as a local SMTP server to capture outgoing messages during the development process. By intercepting SMTP traffic, it allows developers to verify email content, headers, and attachments without transmitting messages to actual external recipients. Captured data is stored in an in-memory buffer, ensuring that sensitive information remains accessible for inspection through a dedicated web-based dashboard. The platform distinguishes itself by incorporating network simulation capabilities, which allow for the injection of artificial delays or connecti

    Go
    View on GitHub↗15,784
  • axllent/mailpitaxllent avatar

    axllent/mailpit

    8,764View on GitHub↗

    Mailpit is an SMTP mail testing server and web-based email inbox designed to intercept and store outgoing emails for development and integration testing without delivering them to real recipients. It functions as an SMTP mocking tool and relay gateway, allowing users to capture mail traffic and view it through a browser interface. The project distinguishes itself by providing tools for SMTP server simulation, including the ability to inject failure codes to test application resilience. It also includes an email compatibility analyzer that validates HTML rendering, checks link integrity, and s

    Goemail-testinggogolang
    View on GitHub↗8,764

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  • leokhoa/laragonleokhoa avatar

    leokhoa/laragon

    5,220View on GitHub↗

    Laragon is a portable web server suite and WAMP stack manager that provides a self-contained local development environment. It enables the bootstrapping of web applications through the orchestration of web servers, databases, and language runtimes on a single machine. The project is distinguished by its registry-free portable mode, allowing the entire development stack to be moved between drives or computers without re-installation. It features automated virtual host mapping and SSL certificate generation for local domains, as well as a local tunneling gateway to expose projects via public UR

    PHP
    View on GitHub↗5,220
  • laravel/homesteadlaravel avatar

    laravel/homestead

    3,972View on GitHub↗

    Homestead is a virtual machine provisioner that creates a standardized PHP development environment. It provides a disposable development workspace that isolates project dependencies and server tools from the host operating system, using Vagrant to orchestrate the machine lifecycle. The system functions as a local site orchestrator, allowing users to map custom domains to specific project folders through virtual host routing and network port forwarding. It includes a dedicated local mail testing tool that intercepts outgoing application emails in a dashboard for inspection without sending them

    Shell
    View on GitHub↗3,972
  • aschmelyun/docker-compose-laravelaschmelyun avatar

    aschmelyun/docker-compose-laravel

    2,650View on GitHub↗

    This project provides a containerized orchestration setup designed to standardize local development environments for web applications. By utilizing declarative configuration, it manages isolated service containers to ensure consistent application behavior and dependency management across different developer machines. The environment includes integrated utilities for database persistence, ensuring that data remains intact across container lifecycles through mapped storage volumes. It also features a sidecar-based email interception tool that captures and displays outgoing messages in a local d

    Dockerfile
    View on GitHub↗2,650
  • mautic/mauticmautic avatar

    mautic/mautic

    9,219View on GitHub↗

    Mautic is an open-source marketing automation platform and self-hosted CRM built with PHP. It functions as an audience manager and marketing suite designed for automating lead nurturing, designing customer journeys, and managing multi-channel campaigns on private infrastructure. The system distinguishes itself through a visual workflow engine and campaign builder that model customer journeys via conditional nodes. It incorporates a behavioral tracking engine to monitor website visitor activity, which informs lead engagement scoring to prioritize high-value prospects. The platform covers omni

    PHPdigital-experience-platformdigitalexperienceplatformdxp
    View on GitHub↗9,219
  • riba2534/tcp-ip-networknoteriba2534 avatar

    riba2534/TCP-IP-NetworkNote

    2,505View on GitHub↗

    TCP-IP-NetworkNote is a comprehensive technical reference and guide for implementing network communication using TCP and UDP sockets in C and C++. It provides a detailed manual for using the POSIX socket API and covers the implementation of network protocols, synchronous and asynchronous I/O patterns, and concurrent programming models. The project is distinguished by its focus on cross-platform networking, offering a detailed comparison of socket implementation details and adaptation utilities between Linux and Windows Winsock environments. It specifically addresses the differences in header

    C
    View on GitHub↗2,505
  • dokploy/dokployDokploy avatar

    Dokploy/dokploy

    34,901View on GitHub↗

    Dokploy is a self-hosted platform-as-a-service designed to simplify the deployment and management of containerized applications and databases. It provides a centralized control plane that decouples administrative management from application workloads, allowing users to oversee infrastructure across multiple server nodes through a unified web interface or a command-line tool. The platform distinguishes itself through an extensive library of pre-configured application templates, enabling the rapid deployment of databases, identity providers, and various productivity or development tools. It sup

    TypeScriptbackendbackupsdatabases
    View on GitHub↗34,901
  • stalwartlabs/smtp-serverstalwartlabs avatar

    stalwartlabs/smtp-server

    481View on GitHub↗

    Stalwart SMTP Server

    Rustarcdanedkim
    View on GitHub↗481
  • feuerhamster/mailformFeuerhamster avatar

    Feuerhamster/mailform

    120View on GitHub↗

    The lightweight self-hosted email service for contact forms and more!

    TypeScriptapiemailemail-relay
    View on GitHub↗120
  • corecode/dmacorecode avatar

    corecode/dma

    256View on GitHub↗

    The DragonFly Mail Agent, a small Mail Transport Agent (MTA), designed for home and office use.

    C
    View on GitHub↗256
  • slimta/python-slimtaslimta avatar

    slimta/python-slimta

    172View on GitHub↗

    Python libraries to send, receive, and queue email.

    Python
    View on GitHub↗172
  • dovecot/coredovecot avatar

    dovecot/core

    1,215View on GitHub↗

    Dovecot mail server

    Cemailimapimap4
    View on GitHub↗1,215
  • haraka/harakaharaka avatar

    haraka/Haraka

    5,581View on GitHub↗
    JavaScriptdkimharakajavascript
    View on GitHub↗5,581
  • stalwartlabs/jmap-serverstalwartlabs avatar

    stalwartlabs/jmap-server

    598View on GitHub↗

    Stalwart JMAP server

    Rustjmapjmap-backendjmap-server
    View on GitHub↗598
  • cyrusimap/cyrus-imapdcyrusimap avatar

    cyrusimap/cyrus-imapd

    633View on GitHub↗

    Cyrus IMAP is an email, contacts and calendar server

    C
    View on GitHub↗633
  • flarum/coreflarum avatar

    flarum/core

    6,729View on GitHub↗

    This project is a self-hosted community engine and forum software designed for hosting threaded discussions. It functions as a JSON API community platform, exposing all data and functionality through a standardized interface to support a single-page application architecture. The system is built to be a multi-language discussion board with integrated localization and language pack support. The platform is defined by a modular architecture that allows for extensive customization through an extension-based plugin system. This extensibility enables the modification of core behavior, the addition

    PHP
    View on GitHub↗6,729
  • usesend/usesendusesend avatar

    usesend/useSend

    4,402View on GitHub↗

    useSend is an email marketing platform and transactional delivery system built to manage bulk campaigns and individual messages using AWS SES for delivery. It provides a RESTful API, an SMTP relay gateway, and a visual management interface for designing HTML templates and coordinating email broadcasts. The platform distinguishes itself by translating legacy SMTP traffic into modern API calls and implementing an event-driven webhook system. This system pushes real-time delivery, bounce, and click notifications to external servers using HMAC-SHA256 signed payloads to ensure authenticity. The s

    TypeScriptemailhacktoberfestpostmark
    View on GitHub↗4,402
  • hazelcast/hazelcasthazelcast avatar

    hazelcast/hazelcast

    6,570View on GitHub↗

    Hazelcast is a distributed data platform that combines an in-memory data grid with a stream processing engine to support real-time analytics and event-driven applications. It functions as a partitioned, distributed key-value store that replicates data across cluster nodes to provide low-latency access and high availability. The platform also serves as a distributed SQL query engine, allowing users to execute standard SQL statements against both in-memory datasets and external data sources. What distinguishes Hazelcast is its use of a distributed consensus subsystem to maintain strongly consis

    Javabig-datacachingdata-in-motion
    View on GitHub↗6,570
  • memcached/memcachedmemcached avatar

    memcached/memcached

    14,132View on GitHub↗

    Memcached is a high-performance, distributed, in-memory key-value storage and request routing engine. It functions as a volatile data store designed to accelerate dynamic applications by caching objects in RAM, thereby reducing backend database load and providing sub-millisecond response times. The system utilizes a specialized architecture that organizes memory into fixed-size slabs to minimize fragmentation and maximize throughput for high-concurrency workloads. The project distinguishes itself through a multi-threaded, lock-friendly design that scales across CPU cores and supports complex

    C
    View on GitHub↗14,132
  • tporadowski/redistporadowski avatar

    tporadowski/redis

    9,987View on GitHub↗

    Redis is a high-performance in-memory key-value store that functions as a distributed cache, message broker, and NoSQL database. It provides sub-millisecond read and write access to data stored in RAM and can operate as a vector database for indexing high-dimensional embeddings. The system supports a wide range of data storage and synchronization primitives, including the management of strings, hashes, lists, sets, and JSON documents. It enables real-time data operations through atomic transactions, hybrid persistence using snapshots and append-only logs, and high-availability configurations

    Credisredis-for-windowsredis-msi-installer
    View on GitHub↗9,987
  • shekhargulati/52-technologies-in-2016shekhargulati avatar

    shekhargulati/52-technologies-in-2016

    7,311View on GitHub↗

    This project serves as a comprehensive educational repository and technical reference collection, documenting a wide range of software engineering practices and modern development technologies. It provides a structured learning path for developers, curating tutorials and practical examples that cover the full lifecycle of application development, from initial project scaffolding to deployment and maintenance. The repository distinguishes itself by offering deep technical insights into complex architectural patterns, including actor-based concurrency models for managing parallel tasks and cont

    JavaScriptawesomeawesome-listblog
    View on GitHub↗7,311
  • jujumilk3/leaked-system-promptsjujumilk3 avatar

    jujumilk3/leaked-system-prompts

    14,134View on GitHub↗

    This project is a research-oriented repository that serves as a centralized database for system-level prompts and internal behavioral instructions extracted from various large language models. Its primary purpose is to provide a transparent, accessible reference for researchers and developers to study how artificial intelligence models are configured, constrained, and governed. The repository distinguishes itself by cataloging the hidden directives and operational guidelines that define model personas and safety boundaries. By archiving these instruction sets, it enables comparative analysis

    aidocumentllm
    View on GitHub↗14,134
  • quarkusio/quarkusquarkusio avatar

    quarkusio/quarkus

    15,479View on GitHub↗

    Quarkus is a Kubernetes-native Java framework designed for building high-performance, memory-efficient applications. It utilizes ahead-of-time native compilation to transform Java code into standalone, optimized binaries that eliminate the need for a virtual machine, enabling rapid startup and reduced memory consumption. By performing code augmentation during the build phase, it shifts heavy processing tasks away from runtime, ensuring that applications are optimized for cloud-native environments. The framework distinguishes itself through a unified approach to reactive and imperative program

    Javacloud-nativehacktoberfestjava
    View on GitHub↗15,479
  • baserow/baserowbaserow avatar

    baserow/baserow

    4,188View on GitHub↗

    Baserow is a self-hosted, no-code relational database platform built on PostgreSQL. It provides a spreadsheet-like interface for structuring and managing data without writing code, while exposing all database resources via a REST API to support headless architectures. The platform distinguishes itself by integrating large language models and embedding servers to power AI assistants and automated data generation. It further extends its utility as a no-code application builder, allowing users to create custom internal portals, dashboards, and business tools using visual logic and managed data.

    Pythonairtableairtable-alternativeairtable-replacement
    View on GitHub↗4,188
  • ptarjan/node-cacheptarjan avatar

    ptarjan/node-cache

    1,595View on GitHub↗

    Node-cache is a lightweight in-memory data storage module designed for Node.js applications. It functions as a key-value store that maintains frequently accessed data directly within the application runtime to improve response times and reduce latency. The library manages the lifecycle of stored information through automated expiration policies, which use internal timers to remove stale entries once a defined time-to-live duration has elapsed. It provides granular control over stored resources, allowing for the manual inspection, deletion, or clearing of specific keys to manage memory usage e

    JavaScript
    View on GitHub↗1,595
  • snapchat/keydbSnapchat avatar

    Snapchat/KeyDB

    12,487View on GitHub↗

    KeyDB is a multithreaded in-memory key-value store and distributed cache. It functions as a NoSQL database utilizing multi-version concurrency control to execute non-blocking queries and scans. The project is a multithreaded fork of Redis that maintains protocol compatibility while utilizing a multithreaded architecture to scale across multi-core hardware. It distinguishes itself with flash-tiered storage, allowing the system to offload data from primary RAM to SSD or flash storage to increase total capacity. The system supports high availability through active-active mesh replication and mu

    C++
    View on GitHub↗12,487
  • hosseinmoein/dataframehosseinmoein avatar

    hosseinmoein/DataFrame

    2,917View on GitHub↗

    DataFrame is a C++ tabular data library and manipulation engine designed for managing heterogeneous data in contiguous memory. It functions as a statistical analysis framework and time series analysis toolkit, providing the means to store, index, and transform multidimensional datasets. The project distinguishes itself through a high-performance execution model that utilizes column-major storage, SIMD-aligned memory allocation, and a thread-pool for parallel computations. It employs a visitor-based algorithm dispatch system and policy-driven transformations to decouple data processing logic f

    C++aicppdata-analysis
    View on GitHub↗2,917
  • redis-windows/redis-windowsredis-windows avatar

    redis-windows/redis-windows

    3,485View on GitHub↗

    This project is a native Windows port of the Redis in-memory key-value store. It provides a high-speed database that maintains datasets in RAM while using periodic snapshots to disk for data persistence. The implementation includes a background system service wrapper, allowing the data store to be installed as a Windows service that starts automatically upon computer boot. It utilizes native Windows compilation to enable execution directly on the host operating system. The system covers in-memory data caching and local data persistence, ensuring that information is recovered after a process

    Batchfileredisredis-for-windowsredis-server
    View on GitHub↗3,485