Sites like flippercloud.io

Philip Zastrow's personal blog and site on product design, front-end development, automation, weeknotes, and his reading list

Software engineer Drew Bragg's personal site on Ruby, JavaScript, Ruby on Rails and Stimulus.js, with a podcast

HanamiMastery is a screencast and article blog on the Hanami Ruby web framework and related open source topics

A catalogue of Ruby gem projects by Peter Boling, with download counts, maintainer status and tag filters

An English-language personal blog by Ben Sheldon on Ruby on Rails, Thor commands, and assorted historical and apocryphal topics about the Mississippi

Solargraph, a Ruby language server gem providing autocompletion, diagnostics and type checking for editors, developed by Castwide Technologies

A design and development agency that builds web and mobile products, with case studies and services from thoughtbot

HEY, an email and calendar service from 37signals with a privacy-focused inbox, work plans, blogging, and agent access

Personal site of Victor Shepelev (zverok), a Ruby developer and committer, with essays on software, war, poetry and fiction

A personal website by Thomas Leitner, blog and projects on Ruby libraries, PDF tools, benchmarks and privacy

Personal website of OKURA Masafumi, a Tokyo software developer writing about Ruby, Rails, public speaking and conference organizing

A C programming library for making videogames, with examples, games gallery and zlib-licensed source code

Stan Lo's personal blog on Ruby developer tooling, documentation, REPLs, talks, project updates, and the cctop macOS app

A podcast hosting platform, Fireside, that lets creators publish and distribute their shows to directories

A turn-based post-apocalyptic survival roguelike game called Cataclysm: Dark Days Ahead, with its downloads, releases, packaging and donations pages

Essays on programming and open-source by Bozhidar Batsov, creator of RuboCop, CIDER, and Prelude, a blog

Typesense, an open source in-memory search engine and alternative to Algolia and Elasticsearch, with documentation and Docker images

A free Go programming tutorial series with code examples and articles by Naveen Ramanathan, a software engineer

hledger is an open-source plain text accounting tool and manual for tracking money, investments, and time with double-entry bookkeeping

John Reilly's personal blog on software engineering, TypeScript, open source tooling and web development, with talks and photography

Hanakai is a family of Ruby tools and framework projects, including the Hanami web framework, the dry gems and ROM persistence toolkit

A free open source Ruby security toolkit of CLI commands and libraries for security research, by the Ronin project

A tiling window manager for X11, written and configured in Haskell, with guides, release news and a blog

Steve Ruiz's personal blog on web development, TypeScript, SVG geometry and canvas user interfaces, by a London-based developer and founder

MultiMC is an open-source alternative Minecraft launcher for managing separate instances with their own mods and saves, by peterix

Kilian Valkhof's personal site on front-end development, UX design and his software projects, with talks and writing

Open source community site offering resources, info and support for building games with the DragonRuby Game Toolkit

Event-Driven, a blog, talks and guides by Oskar Dudycz on software architecture, Event Sourcing, CQRS and event-driven design

Headius, a commercial JRuby support firm run by core runtime developers, offering priority bug fixes, debugging and performance consulting

Julien Cretel's personal site on Go programming, web security research, conference talks and freelance security testing services

Peter Solnica's dev blog on Elixir, Ruby and AI-driven development, with posts on libraries and testing

A component library and Tailwind CSS plugin providing pure-CSS UI components with semantic class names, documentation by its maintainers

Bay 12 Games, the independent developer's site for Dwarf Fortress and other games, including Liberal Crime Squad and WWI Medic, by Tarn Adams

pqrs.org is a personal portfolio of macOS utilities, Thunderbird add-ons, hardware and retro emulation projects by its developer