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@evilmartians

Evil Martians

Evil Martians, an extraterrestrial product development consultancy and COSS team. Offices in New York, Porto, and Osaka. See https://evilmartians.com/opensource

Evil Martians is a product development consultancy that works with startups and established businesses, builds developer tools, and creates open source-based products.

Clients trust us to be the core technical team behind their startups, delivering all elements of successful product work: user interface design backed by analytics, agile software development, infrastructure administration, and service reliability. We pay extra attention to mentoring, making sure that the practices we bring in are adopted by the internal team before our collaboration is over.

Our Open Source

Open source is a defining part of Martian culture. We’ve created dozens of libraries and utilities for developers in diverse programming language communities, as well as tools and plugins for UI designers.

Be sure to check out the full list of our Open Source projects at evilmartians.com/opensource!

See more at evilmartians.com and check out our blog, Martian Chronicles.

Some of our key products:

Product
PostCSS Designed to make large CSS codebases more maintainable and bring more exciting ideas into the world of CSS tooling, PostCSS has become one of Evil Martians’ most popular products. Today it is used by industry leaders like Google, Facebook, Wikipedia, Bootstrap, GitHub, Wordpress, Taobao, Twitter, and many other large businesses and startups.
imgproxy imgproxy is a blazing fast and secure image processing tool. Built by developers for developers, imgproxy resizes and processes images on the fly and doesn’t consume disk space. It reduces your costs and removes the costly requirement that all saved images conform to specific formats.
AnyCable AnyCable is a way to build reliable real-time features natively on Ruby on Rails without using 3rd-party services. Save up to 10x on infrastructure compared to built-in ActionCable without sacrificing Rails productivity by switching to third-party services: a fast Golang server handles the load, a gRPC-driven Rails application deals with business-logic. The Pro version offers even more benefits: an additional 40% reduced memory footprint, DX improvements, and priority support.
Logux Logux is a new way to connect clients (web and mobile apps) and servers. Instead of sending HTTP requests (AJAX/REST), it synchronizes the operations log between client, server, and other clients through WebSockets. Building on top of CRDT (conflict-free replicated data type) ideas, it features live updates, an optimistic UI, and is offline-first by design.

See more at evilmartians.com/products.

Popular repositories Loading

  1. lefthook lefthook Public

    Fast and powerful Git hooks manager for any type of projects.

    Go 6.5k 245

  2. mono mono Public

    Free and open-source monospaced font from Evil Martians

    2.5k 19

  3. oklch-picker oklch-picker Public

    Color Picker for LCH

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  4. terraforming-rails terraforming-rails Public

    Terraforming legacy Rails applications guides and tools

    Ruby 735 80

  5. evil-seed evil-seed Public

    A Gem for creating partial anonymized dumps of your database using your app model relations.

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  6. ruby-on-whales ruby-on-whales Public

    Ruby on Whales example and templates

    Ruby 301 27

Repositories

Showing 10 of 67 repositories
  • harmonizer Public
    evilmartians/harmonizer’s past year of commit activity
    TypeScript 57 0 0 0 Updated Aug 20, 2025
  • fullstaq-ruby-docker Public

    Docker image for Ruby build from Fullstaq packages based on Debian 11, 12, and 13

    evilmartians/fullstaq-ruby-docker’s past year of commit activity
    Dockerfile 182 22 2 0 Updated Aug 18, 2025
  • evilmartians/rails-tutorial’s past year of commit activity
    Ruby 26 1 4 1 Updated Aug 14, 2025
  • lefthook Public

    Fast and powerful Git hooks manager for any type of projects.

    evilmartians/lefthook’s past year of commit activity
    Go 6,463 MIT 245 36 0 Updated Aug 12, 2025
  • keynote Public

    Flexible presenters for Rails.

    evilmartians/keynote’s past year of commit activity
    Ruby 178 12 0 1 Updated Aug 11, 2025
  • charts Public

    Public Helm charts

    evilmartians/charts’s past year of commit activity
    Smarty 2 1 0 0 Updated Aug 7, 2025
  • redprints-cfp Public

    A redprint for a CFP app built with Rails and Inertia.js

    evilmartians/redprints-cfp’s past year of commit activity
    Ruby 77 3 0 1 Updated Aug 6, 2025
  • devtool-template Public

    Free free template for dev tools

    evilmartians/devtool-template’s past year of commit activity
    HTML 124 MIT 20 1 1 Updated Jul 31, 2025
  • oklch-picker Public

    Color Picker for LCH

    evilmartians/oklch-picker’s past year of commit activity
    TypeScript 1,425 87 10 1 Updated Jul 30, 2025
  • figma-polychrom Public

    Figma plugin for displaying the contrast level and font size recommendations according to the APCA method

    evilmartians/figma-polychrom’s past year of commit activity
    TypeScript 83 MIT 16 4 3 Updated Jul 22, 2025