Self-hosted apps built with Ruby

Maybe

Budgeting & Finance

Open-source personal finance and wealth app

Replaces Mint, Personal Capital

Jekyll

Blogging Platforms

Simple, blog-aware static site generator

Replaces WordPress, Blogger

Mastodon

Social Networks

Decentralized open-source microblogging server

Replaces Twitter, X

Huginn

Automation & Workflows

Agents that monitor and act on your behalf

Replaces IFTTT, Zapier

Discourse

Social Networks

Modern open-source community discussion platform

Replaces phpBB, Reddit

Chatwoot

Chat & Communication

Open-source customer engagement and live-chat platform

Replaces Intercom, Zendesk

Complete DevOps platform you can self-host

Replaces GitHub, Bitbucket

Open source community platform behind DEV

Replaces Discourse, Reddit

DocuSeal

Document Management

Open-source document signing and e-signature platform

Replaces DocuSign, HelloSign

Postal

Mail Servers

Complete mail delivery platform for outgoing email

Replaces SendGrid, Mailgun

OpenProject

Project Management & Tasks

Open-source project management and collaboration

Replaces Jira, Asana

Open-source Rails e-commerce platform

Replaces Shopify, BigCommerce

A simple, Git-powered wiki with a sweet API

Replaces Confluence, Notion

Privacy-focused decentralized social network

Replaces Facebook, Twitter

Unified logging layer for collecting and routing data

Replaces Logstash

Open-source billing and metering API

Replaces Stripe Billing, Chargebee

Dawarich

Maps & GIS

Self-hosted location history tracker and visualizer

Replaces Google Maps Timeline

Sure

Budgeting & Finance

Community-driven personal finance app

Replaces Mint, Quicken

Kanban as it should be. Not as it has been

Ruby static site generator with modern tooling

Replaces Jekyll, WordPress

Open-source learning management system by Instructure

Replaces Blackboard, Moodle

Catch-all SMTP server for inspecting test email

Replaces Mailtrap

Redmine

Developer Tools & Git

Flexible project management and issue tracking

Replaces Jira

Zammad

Chat & Communication

Web-based helpdesk and customer support system

Replaces Zendesk, Freshdesk

Free open-source Rails commerce platform

Replaces Shopify, Magento

Computing-focused link aggregation and discussion site

Replaces Reddit, Hacker News

Self-hosted chat for teams

Take back control of your GitHub Notifications

Black Candy

Media Servers

Music streaming server

Replaces Spotify, Apple Music

Self-hosted error catcher compatible with Airbrake

Replaces Airbrake, Sentry

Anti-social, self-hosted RSS reader

Replaces Feedly, Google Reader

Feedbin

RSS & News Readers

Nice, simple, open-source RSS reader

Replaces Feedly, Google Reader

Ruby on Rails open-source customer relationship manager

Replaces Salesforce

Password Pusher

Pastebins & Snippets

Dead-simple application to securely communicate passwords (or text)

Share sensitive credentials with self-destructing links

Replaces 1Password, Doppler

The Rails application powering openstreetmap.org

Replaces Google Maps

Self-hostable tag-based image board and gallery

Replaces Pinterest, Eagle

Collaborative decision-making tool that makes it easy for anyone

Open-source helpdesk and knowledge base platform

Replaces Zendesk, Help Scout

Open-source platform for building online marketplaces

Replaces Sharetribe Flex, Marketplace builders

Self-hosted 3D model organizer with ActivityPub

Replaces Thingiverse, Printables

Transactional email server with click and open tracking

Replaces Mailgun, SendGrid

Progressive Ruby site generator and web framework

Replaces Jekyll, WordPress

GTD-style to-do list and personal organizer

Replaces Todoist, OmniFocus

Console-based threaded email client

Replaces Mutt

eigenfocus

Project Management & Tasks

Project Management, Planning and Time Tracking app

Event management tailored to free Software conferences

Front-end for managing BigBlueButton meeting rooms

Replaces Zoom, Google Meet

Mastodon fork with local-only posting

Replaces Twitter, Mastodon

RSSBox

RSS & News Readers

Generate RSS feeds for sites without native feeds

Replaces RSS-Bridge

Community-maintained Mastodon fork with extra features

Replaces Twitter, Mastodon

Private blogging system with markdown editing and built in RSS reader

Meme Search

Search Engines

AI-powered meme search engine

Tool for one-time IMAP mailbox migration

Replaces Hosted migration services

Experimental Ruby implementation of the Bitwarden API

Replaces Bitwarden, 1Password

Open-source question and answer community software

Replaces Stack Overflow, Quora

Manage complex group hierarchies with members, events and a lot more

Community-driven Q&A knowledge-sharing platform

Replaces Stack Overflow, Stack Exchange

Archives information management application for managing and providing

Simple Document Management System for private use with basic

Fab Lab management solution

Front-end for the Samvera framework, which itself is a Ruby on Rails

Email-to-blog platform that turns messages into posts

Replaces Medium, Posthaven

SOLECTRUS

Home Automation

Photovoltaic dashboard that displays energy production and consumption

Feature-rich Mastodon fork for advanced users

Replaces Twitter

Bridge Discourse notifications to chat platforms

Replaces Forum email digests

Encrypting mailing list manager with OpenPGP

Replaces Google Groups

Platform for social and solidarity economy networks with blog,

Modern web interface for managing your Public Pool's data

Advanced Kanban boards with time tracking