Open Source Tools you can self-host

Slimta

( reviews)

Mail Transfer Library built on Python.

SnyPy

Open source on-prem code snippet manager.

Snikket

All-in-one Dockerized easy XMPP solution, including web admin and clients.

Socialhome

Federated and decentralized profile builder and social network engine.

Socialhome review

SnappyMail

Simple, modern, lightweight & fast web-based email client (fork of RainLoop).

SnappyMail review

Sorry Cypress

Alternative open-source dashboard for the Cypress browser automation framework, featuring unlimited parallelization, recording and debugging of tests.

Sorry Cypress review

Sosse

Selenium based search engine and crawler with offline archiving.

SPIP

Publication system for the Internet aimed at collaborative work, multilingual environments, and simplicity of use for web authors.

sourcegraph

Sourcegraph is a fast, open-source, fully-featured code search and navigation engine written in Go.

sourcegraph review

Solidus

A free, open-source ecommerce platform that gives you complete control over your store.

SolidInvoice

Open source invoicing and quote application.

SolidInvoice review

SourceBans++

Admin, ban, and communication management system for games running on the Source engine.

SourceBans++ review

Sonarr

Automatic TV Shows downloader and manager for Usenet and BitTorrent. It can grab, sort and rename new episodes and automatically upgrade the quality of files already downloaded when a better quality format becomes available.

Speed Test by OpenSpeedTest™

Free & Open-Source HTML5 Network Performance Estimation Tool.

Speed Test by OpenSpeedTest™ review

Spree Commerce

Spree is a complete, modular & API-driven open source e-commerce solution for Ruby on Rails.

Spree Commerce review

SPIS

A simple, lightweight and fast media server with decent mobile support.

Sourcehut

A full web git interface with no javascript.

Sourcehut review

Spectrum 2

Spectrum 2 is an open source instant messaging transport. It allows users to chat together even when they are using different IM networks.

Spectrum 2 review

Starbase 80

A simple homepage with an iPad-style application grid, for mobile and desktop. One JSON configuration file.

Starbase 80 review

Stalwart Mail Server

All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features.

Stalwart Mail Server review

Squidex

Headless CMS, based on MongoDB, CQRS and Event Sourcing.

StackStorm

StackStorm (aka ) is event-driven automation for auto-remediation, security responses, troubleshooting, deployments, and more. Includes rules engine, workflow, 160 integration packs with 6000+ actions and ChatOps.

StackStorm review

SQLPage

SQL-only dynamic website builder.

SquirrelMail

Another browser-based IMAP client.

SquirrelMail review

Sshwifty

Sshwifty is a SSH and Telnet connector made for the Web.

Sshwifty review

Stalwart JMAP

JMAP and IMAP server designed to be secure, fast, robust and scalable.

Stalwart JMAP review

Standard Notes

Simple and private notes app. Protect your privacy while getting more done. That’s Standard Notes.

Standard Notes review

SRS

A simple, high efficiency and real-time video server, supports RTMP, WebRTC, HLS, HTTP-FLV and SRT.

Stash

A web-based library organizer and player for your adult media stash, with auto-tagging and metadata scraping support.

Streama

Self hosted streaming media server.

Stalwart SMTP

Modern SMTP server designed with a focus on security, speed, and extensive configurability.

Stalwart SMTP review

StatPing.ng

An easy to use Status Page for your websites and applications. Statping will automatically fetch the application and render a beautiful status page with tons of features for you to build an even better status page.

StatPing.ng review

Strapi

The most advanced open-source Content Management Framework (headless-CMS) to build powerful API with no effort.

StartOS

Browser-based, graphical Operating System (OS) that makes running a personal server as easy as running a personal computer.

Stump

A fast, free and open source comics, manga and digital book server with OPDS support.

Stretto

Music player with Youtube/Soundcloud import and iTunes/Spotify discovery.

Stringer

Work-in-progress self-hosted, anti-social RSS reader.

Stringer review

SuiteCRM

The award-winning, enterprise-class open source CRM.

SuiteCRM review

Squid

Caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages.

string.is

An open-source, privacy-friendly online string toolkit for developers.

string.is review

Stirling-PDF

Local hosted web application that allows you to perform various operations on PDF files, such as merging, splitting, file conversions and OCR.

Stirling-PDF review

Sunshine

Remote game stream host for Moonlight with support up to 120 frames per second and 4K resolution.

Sunshine review

Swetrix

Ultimate, open-source web analytics to satisfy all your needs.

Surfer

Simple static file server with webui to manage files.

Suroi

An open-source 2D battle royale game inspired by surviv.io.

Supysonic

Python implementation of the Subsonic server API.

Supysonic review

Superset

Modern data exploration and visualization platform.

Superset review

Sup3rS3cretMes5age

Very simple (to deploy and to use) secret message service using Hashicorp Vault as a secrets storage.

Sup3rS3cretMes5age review

Svix

Open-source webhooks as a service that makes it super easy for API providers to send webhooks.

Syncthing

Syncthing is an open source peer-to-peer file synchronisation tool.

Syncthing review

Sympa

Mailing list manager.

Sylius

Symfony2 powered open source full-stack platform for eCommerce.

Syncloud

Your own online file storage, social network or email server.

Syncloud review

SwingMusic

Swing Music is a beautiful, self-hosted music player and streaming server for your local audio files. Like a cooler Spotify … but bring your own music.

SwingMusic review

SWAG (Secure Web Application Gateway)

Nginx webserver and reverse proxy with PHP support, built-in Certbot (Let’s Encrypt) client and fail2ban integration.

SWAG (Secure Web Application Gateway) review

SyncMarks

Sync and manage your browser bookmarks from Edge, Firefox and Chromium.

SyncMarks review

SyncTube

Lightweight and very simple to setup CyTube alternative to watch videos with friends and chat.

SyncTube review

Taiga

Agile Project Management Tool based on the Kanban and Scrum methods.

TagSpaces

TagSpaces is an offline, cross-platform file manager and organiser that also can function as a note taking app. The WebDAV version of the application can be installed on top of a WebDAV servers such as Nextcloud or ownCloud.

TagSpaces review

Tasmota

Open source firmware for ESP devices. Total local control with quick setup and updates. Control using MQTT, Web UI, HTTP or serial. Automate using timers, rules or scripts. Integration with home automation solutions.

Tailchat

Next generation noIM application in your own workspace, not only another Slack/Discord/rocket.chat.

Tailchat review

Specifically Clementines

Grocery shopping app (previously Groceries), providing reliable sync with multiple users/devices (web/Android/iOS), recipes and integration with Tandoor.

Specifically Clementines review

Talkyard

Create a community, where your users can suggest ideas and get questions answered. And have friendly open-ended discussions and chat (Slack/StackOverflow/Discourse/Reddit/Disqus hybrid).

Talkyard review

Takahē

Federated microblogging server. Mastodon, & ActivityPub compatible.

Task Keeper

List editor for power users, backed by a self-hosted server.

Task Keeper review

Synapse

Server for , an open standard for decentralized persistent communication.

Taskwarrior

Taskwarrior is Free and Open Source Software that manages your TODO list from your command line. It is flexible, fast, efficient, and unobtrusive. It does its job then gets out of your way.

Taskwarrior review

Syndie

Syndie is a libre system for operating distributed forums.

Temboz

Two-column feed reader emphasizing filtering capabilities to manage information overload.

Teleport

Certificate authority and access plane for SSH, Kubernetes, web applications, and databases.

Teleport review

TextBelt

Outgoing SMS API that uses carrier-specific gateways to deliver your text messages for free, and without ads.

TextBelt review

Teedy

Lightweight document management system packed with all the features you can expect from big expensive solutions (Ex SismicsDocs).

Technitium DNS Server

Authoritative/recursive DNS server with ad blocking functionality.

Technitium DNS Server review

Tasks.md

A self-hosted, file based task management board that supports Markdown syntax.

Tasks.md review

teikei

A web application that maps out community-supported agriculture based on crowdsourced data.

Teeworlds

Open source 2D retro multiplayer shooter.

Teeworlds review

Teampass

Password manager dedicated for managing passwords in a collaborative way. One symmetric key is used to encrypt all shared/team passwords and stored server side in a file and the database. works on any server Apache, MySQL and PHP.

Teampass review

The Lounge

Self-hosted web IRC client.

The Lounge review

Thelia

Thelia is an open source and flexible e-commerce solution.

The Epube

Self-hosted web EPUB reader using EPUB.js, Bootstrap, and Calibre.

The Epube review

Textpattern

Flexible, elegant and easy-to-use CMS.

Textpattern review

Thingsboard

Open-source IoT Platform - Device management, data collection, processing and visualization.

Thingsboard review

This week in past

Aggregates images taken this week, from previous years and presents them on a web page with a simple slideshow.

This week in past review

TeslaMate

A powerful data logger for Tesla vehicles.

TeslaMate review

Tigase

XMPP server implementation in Java.

Tiki

Wiki CMS Groupware with the most built-in features.

TimeTagger

An open source time-tracker based on an interactive timeline and powerful reporting.

TimeTagger review

The Battle for Wesnoth

The Battle for Wesnoth is an Open Source, turn-based tactical strategy game with a high fantasy theme, featuring both singleplayer and online/hotseat multiplayer combat.

The Battle for Wesnoth review

TimeOff.Management

Simple yet powerful absence management software for small and medium size business.

TimeOff.Management review

Thumbor

A smart imaging service and enables on-demand cropping, resizing, applying filters and optimizing images.

TiddlyWiki

Reusable non-linear personal web notebook.

TiddlyWiki review

TileServer GL

Vector and raster maps with GL styles. Server side rendering by Mapbox GL Native. Map tile server for Mapbox GL JS, Android, iOS, Leaflet, OpenLayers, GIS via WMTS, etc.

TileServer GL review

ToolJet

Low-code framework to build & deploy internal tools with minimal engineering effort (alternative to Retool & Mendix).

Tiny File Manager

Web based File Manager in PHP, simple, fast and small file manager with a single file.

Tiny File Manager review

Tine

Software for digital collaboration in companies and organizations. From powerful groupware functionalities to clever add-ons, tine combines everything to make daily team collaboration easier.

Tinyproxy

Light-weight HTTP/HTTPS proxy daemon.

Tinyproxy review

Tiny Tiny RSS

Open source web-based news feed (RSS/Atom) reader and aggregator.

Tiny Tiny RSS review

Touca

Continuous regression testing for engineering teams. Get feedback when you write code that could break your software.

Tipi

Homeserver manager. One command setup, one click installs for your favorites self-hosted apps.

Tiledesk

All-in-one customer engagement platform from lead-gen to post-sales, from WhatsApp to your website. With omni-channel live agents and AI-powered chatbots (alternative to Intercom, Zendesk, Tawk.to and Tidio).

Tiledesk review