Sponsors

WOVN Technologies Inc., based in Tokyo, develops the website localization tool WOVN.io.
WOVN.io allows you to localize your website with one line of code in minutes and it has been written as a Ruby on Rails application from the start.
Simply put, WOVN.io is powered by Ruby.

ESM, Eiwa System Management is one of Japan's premier companies building Ruby/Rails applications in an agile way. We believe in Ruby and Agile because we believe in people. We build applications which work well and make customers happy.

We at Agileware are a group of Agile developers and Ruby specialists and continually strive for excellence in our field. We optimise our work processes by taking advantage of managing our projects with our Redmine plugin suite "Lychee Redmine", writing meeting minutes online with our service "GIJI", while offering flexible working hours and the possibility to work remotely. To offer our clients and developers the highest value we are eager to learn the newest technologies while maintaining Ruby as our first language. To contribute to the spread of productive Ruby development we are also actively involved in training of Ruby programmers.

Shopify Inc. (NYSE: SHOP) (TSX: SHOP), the leading multi-channel commerce platform, is a complete ecommerce solution that allows you to set up an online store to sell your goods. It lets you organize your products, customize your storefront, accept various payments, track/respond to orders — all with a few clicks. Shopify also provides a powerful back-office and a single view of their business. Our platform was engineered for reliability and scale, making enterprise-level technology available to businesses of all sizes. Shopify currently powers over 600,000 businesses in 175 countries and is trusted by brands such as Nestle, GE, Red Bull, Kylie Cosmetics, and many more.

BRILLIANCE+ is the best service for giving an engagement ring to your loved one.
We collect information for over 10,000 high quality diamonds and directly import them from all over the world.
As our products are managed mostly through data, we do not require storage space for our inventory nor require to sell unsold goods through showcases. Instead, we have Japanese craftsmen, designers, and showrooms to devote our time to tailoring diamonds to our customers wants.
This is based on our mission to `Make everyone splendor’. We are proud to be happy together with our customers. Search `BRILLIANCE+’.

Treasure Data enterprise Customer Data Platform enables a single, actionable view of your customer across your martech stack to drive insights that inspire loyalty.

Recruit Marketing Partners is providing the best learning environment for everyone aiming to solve the problem of education gap and online study service used by half of all entrance exam students in Japan.Study Sapuri tackles this issue head on by removing disparities that arise due to time location or finances for future.

Bank is an internet startup that was founded on a simple observation – people need a easier way to access small amounts of money. In order to fulfill this gap, Bank has recently released a mobile app called CASH. By using CASH, users can instantly sell their stuff by only taking a photo of the product which they want to sell. Bank was acquired by DMM.com in November 2017 and is currently working on releasing new services as well as enhancing their existing product.

M3 is a Tokyo-based, global company whose mission is to help more people around the world live healthier, happier lives by reducing the cost of health care in Japan and abroad using technology and the Internet. M3, together with its subsidiaries, operate online physician sites in Japan, China, the UK, USA, Europe, India, and South Korea, comprised of more than 4.0 million doctors worldwide.

Network Applied Communication Laboratory (NaCl) delivers system development solutions utilizing open source software. NaCl drives the Ruby with Ruby creator and NaCl fellow, Yukihiro "Matz" Matsumoto.

Opt, Inc. is an "Innovation Agency" in Japan.
While running parallel with the vision and mission of various customers, innovate business and create new value.
By our system, we provide value for society through marketing and technology.
As an engineer-led organization, "Opt Technologies", we will make further leaps forward this year.

Starting with Find Job! in 1997, mixi Group expands the possibilities of communication under a mission of creating new culture with services including Japan's first social network mixi, and the multiplayer smartphone app Monster Strike. The group continues to challenge and develop new markets while enriching the lifestyles of people around the world.

SMS is a global company whose mission is to create values and contribute to society by providing an "information infrastructure for an aging society." We have developed over 40 services based on infromation technology which are targeting those who are associated with aging society in Japan and Asia Oceania since our founding in 2003.

Tabelog is the best way to find restaurants and review them in Japan.
From 2005, we have accumulated over 23 Million Reviews and data for about 860k restaurants. We help "Over 100 Million People" find their best restaurant with scores based on the reviews. Along with our Search Service, we also provide a Booking Service, Credit Card Payment Service and so on. Since 2007, we have been developing Tabelog with Ruby. We're hiring Rubyists! Help us build further splendid service.

JetBrains creates intelligent, productivity-enhancing tools for software developers to simplify their challenging tasks and automate the routine ones. JetBrains RubyMine (www.jetbrains.com/ruby) is the most powerful IDE (Integrated Development Environment) on the market today, specially designed for developers working with Ruby and Ruby on Rails. It is famous for its outstanding Code Insight features including code autocompletion, code navigation, language-specific inspections with quick-fixes, smart notifications, refactorings, and in-editor quick documentation. The IDE also provides a built-in test runner, debugger, VCS support, and other essential tools supporting cutting-edge Ruby technologies.

we are operating a manufacturing-focused global matching platform -"Linkers"-

Toreta provide Reservation / CRM Solutions for restaurants.
We globally offer the solution to improve the productivity of restaurants and help them to provide better “Omotenashi” to diners.
We believe we can change the restaurant industry to the next level. We hope everyone works in the industry will be happier and more satisfied and more proud of their jobs. The backend system is mostly developed in Ruby.

The mission of Start Today Technologies Inc. is to operation services and to develop technology that will help improve the entire Start Today Group. Start Today Technologies is a collection of those who are currently involved in technical productions, such as engineers, designers and analysts of the Start Today Group companies.

Start Today Technologies will also be in charge of operating “Start Today Research”, which is our research institute. By applying the Strat Today Technologies’ expertise in innovation, we aim to achieve Start Today Research’s mission of “Scientifically defining and predicting fashion”.

We are the platform for startups and create a lot of "Awesome!" with Ruby. Make it Awesome together!

Fastly helps the world’s most popular digital businesses keep pace with their customer expectations by delivering fast, secure, and scalable online experiences. Businesses trust the Fastly edge cloud platform to accelerate the pace of technical innovation, mitigate evolving threats, and scale on demand. Founded in 2011, Fastly powers online destinations including Airbnb, GitHub, Alaska Airlines, Pinterest, Vimeo, The Guardian, The New York Times and Ticketmaster. Learn more at Fastly.com and follow us on Twitter @fastly.

Akatsuki dreams of a society where emotion develops into rewards. People are content and act voluntarily in the society.
For the mainstay mobile gaming business, we develop and operate games to provide exciting user experience.
We also want to provide the world with excitement and connection through several businesses including the Live Experience business, where we provide real fun experiences.

LIFULL Co., Ltd. is a company that operates "LIFULL HOME'S", which provides most numerous real estate information web service in Japan (※). LIFULL group also has expanded into other business fields such as nursing care, interior design, insurance, etc., and provides services in 57 countries around the world. We choose Ruby in order to develop our various services. We would like to support the evolution of Ruby and development of its community. ※Surveyed by Sankei Medix (January 30, 2018)