Coincheck, Inc. offer a diverse range of crypto asset services, including Coincheck, a crypto asset exchange service with the highest number of download apps(*) in Japan. With a mission to make the exchange of new value easier, Coincheck is working to develop better services created from crypto assets and blockchain.
* As of 2022, source App Tweak
WED,Inc. was founded in 2016.
In 2018, we released "ONE", a mobile app that turns receipts into cash. The app attracted users with the complete new experience that had never existed before. The number of downloads exceeded 85,000 on the first day on the AppStore, and won the first place in the overall ranking. Currently, the cumulative download records over 6 million, and we have more than 700 million receipt data.
In 2020, we also launched a SaaS "Zero" for commercial facilities operations. It succeeded in reducing the amount of paper used in commercial facilities by about 600,000 sheets per year.
We will continue to create magical experiences.
Timee is a matching platform for gig workers launched in 2018. Our mission is "to make the infrastructure which helps everyone to achieve promising future through working." We use Ruby for agile service development to achieve our mission.
MNTSQ is a cutting-edge Japanese enterprise SaaS provider, aiming to revolutionize the world of contracts and make all agreements 'fair'.
We have provided MNTSQ CLM which realizes streamlines all processes related to contract lifecycle tasks.
Our service currently has over 100,000 users from leading large-size enterprises which require exceptional performance and high stability based on Ruby and Ruby On Rails.
This is all backed by Ruby and Ruby On Rails.
Leaner Technologies inc.
Leaner Technologies inc. is a company that develops and provides a cloud service called “Leaner” designed for procurement division.
Our mission is raising the corporate value of all Japanese companies by digitalizing the corporate shopping process.
We operate a company aiming for the realization of a society that would allow for all kinds of self-realization based on good health. Our core business, the personal training gym “RIZAP,” has expanded to the scale of 119 gyms* opened in Japan with a total of over 180,000* members.
Our company aims to realize a society that would allow each individual’s self-actualization through the basis of health. Our core business, the personal training gym “RIZAP,” has expanded to 119 gyms* in Japan, with a total of over 180,000* members.
*As of the end of November 2022
We are currently operating “chocoZAP,” a convenience gym for exercise beginners, on a full scale. By the term ending March 2026, we aim to open 2,000 gyms, on par with convenience stores.
We have adopted Ruby & Ruby on Rails as the core technology. We are continuing to
develop a better service in-house.
We, RIZAP Group, will aim to extend the life expectancy of Japan through the mix of in-person and digital services.
[ Rubyists Wanted! ]
As we have basically adopted a telecommuting workstyle, applications are possible from anywhere in Japan. Our organization allows young employees to flourish. You will have the opportunity to refine your skills through large-scale business.
After Party Sponsor
We provide "STORES" products, enabling merchant DX with various solutions; E-commerce, Point-of-Sales, Payments, Bookings, and CRM app. 3 products are built with Ruby. We contribute to the growth of Ruby by supporting RubyKaigi which makes huge positive influence on the Ruby Programming and the Ruby Community.
Ruby Committers' Sponsor
Shopify is a global commerce company powering millions of businesses worldwide, and we love Ruby! It's the foundational technology behind our success. Shopify is built on RoR, and with over 2.8 million lines of Ruby code, we have the oldest and largest Rails codebase in the world powering our core monolith. Our Ruby Infrastructure Team actively contributes to the platform to make Ruby fast, scalable, safe, and perform better for developers globally, most recently having YJIT merged into Ruby 3.1. We're committed to the future of Ruby as a language. Learn more about Ruby at scale with Shopify.
GMO Internet Group
Internet for Everyone
Since the GMO Internet Group began its Internet related business in 1995, we have striven to offer services that make the internet easier to use, richer, and more enjoyable under our corporate slogan "Internet for Everyone." Our goal through these services is to create a new internet culture and industry, to inspire and bring smiles to the faces of our customers, and to contribute to both society and people everywhere.
Wi-Fi & Rubyists on Rails Sponsor
Cooking isn’t just a matter of putting together ingredients.
When you cook, you choose. You choose what to buy, what to eat, and how to nourish yourself, your family, and friends. You choose how to give back to communities, both local and global. When you cook, you choose to become a maker of tomorrow’s world.
Here at Cookpad, each day is about inspiring more people to make these choices.
Our work is about making everyday cooking fun for all, because we see a brighter future. And we believe that the power of cooking will get us there. That is the Cookpad mission.
Since March 1998, Cookpad has provided online recipe sharing and search services. It’s a global platform used in 74 countries and regions around the world, including Japan, in 32 languages.
Money Forward, Inc.
Money Forward is a SaaS/fintech company, providing PFM (personal financial management) service “Money Forward ME” and back office SaaS “Money Forward Cloud”.
Since the company's establishment in 2012, our aim has been to solve financial issues of all individuals and businesses through building an open and fair financial platform, thriving to be a player that brings innovative ideas and practices to all users.
CrowdWorks provides a freelancing website to people who want to work thorough the internet. We have been developing our service with Ruby on Rails since 2011. We continue to challenge providing works which suit one's lifestyle so that accomplishing our mission "Talent infrastructure".
ANDPAD is the No. 1 cloud-based construction project management service in Japan, enabling centralized management from site efficiency to management improvement.There are more than 130,000 companies using the service, thanks to our intuitive, easy-to-use development and our thorough support for installation and operation.Our service is used by more than 330,000 people in the construction and building industry.We are rising to the challenge of changing society with technology, to bring digital transformation to the construction industry.
M3 operates a multitude of global services centered around its physician platform. Our mission is "Making use of the Internet to increase, as much as possible, the number of people who can live longer and healthier lives, and to reduce, as much as possible, the amount of unnecessary medical costs."
Fastly is upgrading the internet experience to give people and organizations more control, faster content, and more dynamic applications. By combining the world’s fastest global edge cloud network with powerful software, Fastly helps customers develop, deliver, and secure modern distributed applications and compelling digital experiences. Fastly’s customers include many of the world’s most prominent companies, including Pinterest, The New York Times, and GitHub. For more information on our mission and products, visit https://www.fastly.com.
Recruit Co., Ltd.
We seek to provide "Opportunities for Life" much faster, surprisingly simpler and closer than ever before.
Since our foundation, we have connected individuals and businesses offering both a multitude of choices.
In this era of search, where information has become available anytime anywhere, we need to focus more on providing the optimal choice.
DeNA Co., Ltd.,
DeNA (pronounced "D-N-A") aims to entertain and to serve through our businesses, under our mission to delight people beyond their wildest dreams. DeNA's major business areas are in mobile games, sports, live streaming, healthcare, and automotive.
"We create Healthtech Platforms. "
MedPeer Group is a company founded by a active physician. Our core business is MedPeer, a community platform for physicians, in which over 40% of Japan's physicians participate, and we provide services that support the value chain of healthcare.
ESM 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.
ZOZO, Inc. owns and operates ZOZOTOWN, Japan’s largest fashion e-commerce. Housed within ZOZOTOWN are category specialized malls such as ZOZOCOSME and ZOZOSHOES; ZOZOUSED, a second-hand clothing fashion mall; ZOZOVILLA, a section dedicated to luxury & designer brands; YOUR BRAND PROJECT; a D2C business that provides consumers an opportunity to share their sense of style and fashion by creating their own personal fashion brand; WEAR, a SNS for sharing stylings and outfits, and more - various services for fashion lovers. ZOZO has also developed technology devices for body measurement, such as the ZOZOSUIT, ZOZOMAT, and ZOZOGLASS.
Wantedly is a Tokyo-based technology company. From passion-based recruitment to employee engagement, our products aim to Create a World where Work Drives Passion.
"DIGGLE" is a business management SaaS platform that optimizes the business management flow and centralizes management information to promote operational efficiency and collaboration among organizations, and supports rapid and high-quality decision-making. "DIGGLE" enables the entire business management process, including budgeting, actual vs. budget variance analysis, forecasting, and reporting, to be performed in one integrated environment, thereby enabling the early identification of factors that cause gaps between forecasts and actuals, the early implementation of actions, and the improvement of the accuracy of business forecasting.
“coconala” is a skill market for selling and buying knowledge, skills, and experience.
Coconala is a skills matching platform that aims to create a system that allows everyone to pursue their passion.
Buy and sell various services, from “production categories” such as design, website creation, video and music creation and writing, to “business support categories” such as business marketing, as well as “consultation categories” such as career counseling and fashion advices, all for business or in private and in any context. Use “coconala” to exhibit and purchase services, request and provide work proposals, and fulfill a wide range of needs.
Both Being Co., Ltd (hereafter "Being") and Luxiar Co., Ltd (hereafter "Luxiar") belong to "Being Group".
"Being" is a software service vendor founded in 1984 and has been developing and selling many BtoB software services, including the software with the largest market share in Japanese construction industry.
"Luxiar" (https://www.luxiar.com) has been developing systems specializing in Ruby on Rails since 2007 and has many achievements.
"Being" and "Luxiar" as a "Being Group" develop and operate a web application so called "INSHARE" for the construction industry using Ruby on Rails jointly.
“giftee” is a service that enables one to send an eGift via email or LINE, etc, along with the wishes of thank you, congratulation, good job, in a casual manner. A wide range of casual gifts are available for your selection, redeemable at the respective stores nationwide.
Findy helps engineering organizations and individuals improve their development experiences. Founded in 2016 and based in Tokyo, the Engineering Intelligence products, Findy, Findy Freelance, Findy Global, and Findy Team+ are trusted by over 120,000 software engineers users and over 1,000 companies from start-ups to enterprises.
Speee's mission is "Unravel everything. Bring the future to us".
Based on our mission, we solve various issues in the society with technology. We develop our businesses widely in areas of Marketing Intelligence, Digital Transformation and new businesses such as blockchain related areas, etc.
While we have been developing our businesses by combining data and technology, we also have been actively supporting Ruby's development. We further contribute to activating Open-Source Development with support of Kohei Suto from Clear Code, Inc.
Speee will continue to realize our mission by chain of thriving technology and developing businesses.
TenshokuDRAFT is recruitment service. Companies put out the job offer with annual income based on their skills and experiences to IT engineers, just like the professional baseball draft.
note is a media platform where creators can freely post and sell various contents such as texts, images, audio and video, and readers can enjoy the contents ,support creators and make purchases.
Nexway provides the services to solve various industrial issues, based on the business to support the communication traffic infrastructure.
In order to meet with the diverse industry needs, we offer wide range of SaaS/CPaaS services.
We have been utilizing Ruby since 2012, and now working on the Scrum development.
We are looking for a colleague with enthusiasm to develop a better service with us.
Qiita is a technical knowledge sharing and collaboration platform for engineers. Qiita is a place where users can connect with other engineers through the articles.
"Greatly Satisfy IT Engineers."
Qiita, Inc. hopes to accelerate changes in society and the evolution of the world through the development of software, and we contribute to the improvement of the development efficiency of the engineers who support it.
Qiita has been developed using Ruby on Rails since first launch. We are convinced that the power of Ruby on Rails and the flexibility of Ruby has contributed to Qiita's growth.
Flatt Security Inc.
Flatt Security is a startup that provides security services and products for developers. Their mission is to deliver next-generation security for developers and accelerate product development around the world.
What supports our modern society is software consisting of tens of thousands of lines of source code, which is running on an infrastructure consisting of a vast number of devices, and developers who are anxiously supporting the software, which is becoming more and more complex year by year.
We want to create a creative society where these developers can continue to move forward without any security concerns.
Shippio, Inc. has been promoting DX (Digital Transformation) as Japan's first digital forwarder (*1) in the field of international logistics along with its mission of "implementing the ideal logistics experience in society.
To be the Compass of Logistic Innovation.
We aim to transform the Global Logistics Industry where no innovation has been done in the past 50 years.
We strive to accelerate digitalization in the Global Logistics Industry to make logistics around the world easier to access and more transparent.
*1 "Digital forwarder" is a registered trademark of Shippio Co.
Vonage has everything you need to build connected applications with our APIs for SMS, Voice, Video, Verify and more. Whether you want to make and receive phone calls with code, reach users by the messaging platforms they prefer or ensure that users provide the correct contact details, we’ve got you covered. You can also easily integrate with social chat apps such as Facebook Messenger, WhatsApp and Viber, or build in-app voice and messaging experience on mobile and web. We also support open-source libraries for Ruby that enable you to build scalable communications features such as two-factor authentication, notifications, group messaging and calls.
SmartHR is the number one rated HR cloud based software optimized for labor management. Our software not only focuses on employee management and administration, but also growth and productivity. Customers can accelerate digital transformation of HR manual processes including year-end-tax adjustments, employment contracts, new employee registrations, issuing payslips, employee data management, and more. Furthermore, providing talent management functionalities contributes to improve employee productivity and engagement. For this reason, SmartHR is among the leading progressive cloud-based HR solutions enhancing the growth of companies in Japan.
As a big fan of the Ruby language, we're excited to be a sponsor of this Kaigi.
Keiken System CO.,LTD.
Keiken System is an independent software developer in Nagano. We have been working on software development and various services that meet the needs of the times.
We have built a deep trusting relationship with many users and developed the history of computer spread in Our Homeland.
We focused on Ruby early on and was certified "Ruby System Integrator Gold" in 2012 as the first software company in Nagano pref.
With the knowledge we have cultivated so far, we have achieved good results for customers nationwide.
We will continue to challenge evolving IT technology.
We are Ruby specialists developing mainly BtoB products, ‘Lychee Redmine,’ plug-ins for OSS Redmine and ‘KIWI GO,’ the employee wellness app, in a stress-free and flexible environment.
【We Are Hiring Rubyists!】
✔Four-day workweek every other week / 150 days off annually plus paid time off.
✔You can focus on programming - we will not force unnecessary tasks on you.
✔Work whenever and wherever you want with outstanding benefits.
(Remote work, flextime, various benefits including electricity and meal allowances)
✔Free choice of editor, library and framework.
✔Boss-free, non-hierarchical structure. We have a culture of openness and trust.
Hack Space Sponsor
Helpfeel Inc. was founded in Silicon Valley in 2007. In 2019 released Helpfeel, an enterprise search SaaS that provides FAQ search and knowledge discovery for end users and internal teams. In March 2021, raised 500 million yen to expand Helpfeel. Nota has offices in Kyoto and Tokyo while also offering full remote work and flexible hours.
Akatsuki Games Inc.
We believe entertainment can move people’s hearts.
It expands the world you see and deepens connections between family, friends, and those you have yet to meet.
Entertainment creates experiences that are unforgettable in life.
By being true to our creative and expressive selves and by resonating with artists and creators from around the world,
Akatsuki Games aims to continue to deliver entertainment that moves people’s hearts.
Music Event Sponsor
Supporting creators around the world, pixiv Inc. provides various services which are visited by more than 80 million creators and their fans.
Powered by GPS on smartphones and meticulously created hiking maps, YAMAP app enables hikers to locate themselves in mountains with no mobile signals.
By transforming smartphone into a GPS-powered hiking device, YAMAP app has made a huge contribution to the hiking culture in Japan. There are numerous cased where YAMAP app prevented hikers from getting lost while hiking, the most common accident, and even some users were rescued from fatal accidents.
Bit Journey, Inc.
Bit Journey, Inc. was established in 2015. We are using Ruby on Rails to develop Kibela, an information sharing tool for building powerfully creative teams. We are truly grateful to the Ruby and open source community.
Gurzu is a custom software development company with it's engineering based in Nepal and has been working with ruby since 2014. We have trained multiple batches of ruby developers in Nepal and have helped foster ruby ecosystem locally. We still are a ruby company in majority.
TOKIUM Inc. is a company that "Reduces Wasted Time and Creates Wealthy Time" under the corporate philosophy of "Extending the Life Span Of the Experience through a Time Revolution".
We combine technology and human operation to create a user experience that cannot be achieved by either alone.
We're committed to enriching communication and inspiring moments of joy for friends and families with services like mixi, Monster Strike, FamilyAlbum, and TIPSTAR. By placing User Surprise first and putting depth and meaning over quantity and frequency, we hope not only to connect minds but to touch hearts as well.
Linkers Corporation aims to enable collaboration between businesses in all fields.
We provide a number of business matching platforms, with a focus on the manufacturing sector.
Our flagship app Linkers, along with Linkers Sourcing/Marketing, LFB, and more are built using Ruby and the tools contributed by the community.
Tabelog is the best way to find restaurants and review them in Japan.
From 2005, we have accumulated over 50 Million Reviews and data for about 840k restaurants. We help "Over 100 Million People" find their best restaurant with scores based on the reviews.
SMS Co., Ltd.
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 information technology which are targeting those who are associated with aging society in Japan and Asia Oceania since our founding in 2003.
"mybest" is a service that helps create the best possible selection experience.
We help to match users with goods and services, improving the process of making choices to enrich people's lives.
Furthermore, we aim to expand the range of our services by supporting the various choices that users encounter in their daily lives.
ASHITA-TEAM Co., Ltd.
ASHITA-TEAM is a HR Tech company that supports corporate work style reforms through a HR Evaluation Cloud that utilizes AI technology. We construct HR evaluation systems and provide cloud-based operational consulting services with over 4,500 domestic and international clients from small and medium enterprises and startups.
Ezowin aims to lead the agricultural DX from Hokkaido, Japan by "Reposaku", making the NOW and PAST of agriculture clearly visible.
Reposaku has been developed in Ruby since 2018, when the service was launched. Dear Rubyist, come and join us!
i Cubed Systems, Inc.
i Cubed Systems, Inc. develops and provides software service "CLOMO" for mobile device management. CLOMO is used by enterprises which want to utilize mobile devices such as smartphones and tablets.
Treasure Data helps enterprises use all of their customer data to improve campaign performance, achieve efficiency, and drive business value with connected customer experiences. The Treasure Data Customer Data Cloud connects identities in unified customer profiles and applies privacy to drive personalized engagement and improve customer acquisition, sales, and retention.
KOMOJU by Degica
KOMOJU (by Degica) is the leading cross-border payment gateway for Japan. Our Ruby-powered digital payment technologies provide businesses and developers the access they need to succeed across the world. We are active supporters of the Ruby community and our engineers are prominent contributors to the Ruby ecosystem.
stmn, inc. is committed to becoming a company that can maximize the power of "people and organization" to create a succession of businesses that can fulfill its management philosophy of "delivering inspiration and spreading happiness to as many people as possible". We provide the employee engagement platform "TUNAG".
Medley's mission is to create the future of the medical and healthcare industry through technology. Our products, including CLINICS that won Social Innovation Prize at Ruby biz Grand prix 2016, are developed by the team of engineers, designers and doctors. We deliver creative medical healthcare products that enrich people's lives.
Fusic Co., Ltd.
Fusic is a Fukuoka-based software development company powered by innovative engineers. We provide cutting-edge engineering solutions by leveraging our expertise in Web System Development, IoT, and Machine Learning. Dear Ruby enthusiasts, why not join us and leave your mark on the world?
We are developing vertical SaaS businesses specialized in the energy industry. Our Platform business provides Japan's largest
energy switching platform for households and corporates, the Data business provides electricity demand management services for
electricity companies. The EV Charging business provides EV charging services for parking facility owners.
Local Food Sponsor
With a vision of "a world where producers' persistence is justly appreciated," we are an IT company that takes on the challenges faced by the primary industry. The company develops and operates "Tabechoku" an online direct sales site that allows customers to purchase food, flowers, and other products directly from producers throughout Japan.
Free software is important in ClearCode. We develop/support software with our free software development experiences. We feed back our business experiences to free software.
FjordBootCamp is an online programming school. You can become a professional web programmer under the guidance of renowned mentors.
Paytner, Inc. has the mission "Encourage small businesses to take on new challenges with easy payments and billing”.
Network Applied Communication Laboratory Ltd.
We have been developing Ruby applications for our customers with Matz since 2001. We love Ruby, and Free/Libre and Open Source Software.
i-plug Co., Ltd.
i-plug is a tech company that works to create "connections" that support careers. We are developing "OfferBox", a direct recruiting service.
PIXTA's mission is to deliver creative talents around the world. For the technical challenges, please see our developers' blog: https://texta.pixta.jp/.
Creating value through backside transformation.
That is the BX（Backside Transformation） promoted by “I’LL”.
We are Ruby on Rails specialists. Leave it to us for contracted development.
Zenet Co., Ltd.
We develop a wide range of systems, from financial and public systems to the latest web services and mobile apps for startups.
We assist companies in creating in-house digital experiences through web development, testing, and deployment using Ruby and Rails for robust and scalable web applications.
esa is a SaaS in which you can share documents with your teammates in Markdown.
Your team will have more fun collaborating with esa! (\( ⁰⊖⁰)/)
We are supporting our clients' Rails app development, focusing on modern development methods and having good communication. We assist developer's happy lives with their family and friends.
KINECA CO., LTD.
We are working on the operation of an entertainer-specific matching platform and new business development.
Ruby Development Inc.
Ruby Development Inc.'s main activity is the rapid implementation of web services which are deployed on cloud platforms with a development that follows the agile method.
Our services are for those who engaged construction industry, and developed using Ruby.
We continuously contribute to the development of the Ruby community.
Studist is the growing SaaS provider of Teachme Biz, a visual Standard-Operating-Procedure (SOP) management platform, and Hansoku Cloud, a sales promotion PDCA management platform.
We have provided 100+ mobile apps for fans of famous Japanese musicians through our developed low-code app platform, enabling us to deliver these apps quickly.
Croooober Co., Ltd.
Croooober runs its business with the philosophy of "creating novelty and fun in the world" and develops the service such as web applications services and systems.
SUPER STUDIO, Inc. provides an e-commerce platform called "ecforce" for online retailers. More than 1,000 D2C websites in Japan utilize the platform.
ROUTE06 is a digital transformation (DX) partner supporting major enterprises’ in changing their business models.
Drecom Co., Ltd.
We have applied Ruby for our services. As a way to appreciate and giving back, we continue to contribute to the Ruby community.
Hamee is developing an IoT product called "Hamic" with the mission of "Making the world smile by giving shape to love with technology."
Lovegraph takes your photos with our professional photographer in anywhere you like. The photos remind you every moments are lovely moments. ❤️