Sponsors

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.

We are Ruby specialists developing mainly in-house products (e.g. "Lychee Redmine" plug-ins for OSS Redmine and the original meeting minutes software "GIJI") in a stress-free and flexible environment (remote work, full-flex, MacBook Pro, wide sub-displays, comfortable PC chairs, height-adjustable desks, free choice of editor/library/framework, etc...).

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.

DeNA (pronounced “D-N-A”) develops and operates a broad range of services including games, automotive, healthcare, sports and other diversified offerings. Founded in 1999, DeNA built a core competency in internet technology, but as that becomes increasingly commodified, DeNA is now developing a core competence in AI, and making use of this technology across its businesses.

DeNA’s mission is to Delight and Impact the World, and DeNA aims to, as an eternal venture, bring delight to the world using the internet and AI.

We are providing a matching service “Crassone” between Clients (house owners) and Partners (construction companies) in the field of home building.

TORETA is a SaaS-based restaurant reservation platform built with Ruby. Combining POS Connect—for seamless connections with POS systems—and Media Connect—a real-time reservation and seating management system—TORETA delivers comprehensive reservation solutions to facilitate efficient restaurant operations and ensure that diners experience true hospitality and service.

Our mission is “Make Creation Start Easily, and Carried On.“Launched in 2014, “note” is a media platform that enables creators to post texts, manga, photos, audios, and movies, and users to enjoy the contents and support them. We have over 20 million monthly active users and five million works posted on the platform.note will support the creative activities of all types of people and all types of organizations, and will continue to support them so they continue to create.

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 Fastly’s 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, and The New York Times. Learn more at Fastly.com and follow us on Twitter @FastlyJapan and @fastly.

ANDPAD is No.1 product for home builders and renovators to have their site-work more efficient and manage the gross profit of construction.
We have various features of products such as chat communication, ERP(Enterprise Resource Planning), chart management of work schedule, cloud storage for all business-related documents, and report generating so we deliver integrated efficiency for making the industry work happier.

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.

Since 2007 we have been supporting our clients' Rails app development, focusing on modern development methods and having good communication at all times. We assist developer's happy lives with their family and friends.

i³ Systems based in Fukuoka and Tokyo is working on service development under the mission, “Making IT more familiar”. One of our products, CLOMO MDM, provides an EMM (Enterprise Mobility Management) service for many companies.

“Distributors of Wisdom” – We provide online learning service “StudySapuri” in Japan, and “Quipper” in Indonesia and the Philippines.

SmartHR is a software solution that focuses on increasing productivity for the backoffice.
We take care of boring paperwork by putting everything on the cloud.
No more handwriting. No more waiting at government offices. Just fill out a simple online form and SmartHR generates digital versions of pension, employment/health insurance, and other HR-related documents – which can then be submitted to the appropriate offices through the e-Gov API by the click of a button.
As a big fan of Ruby, we're excited to become a sponsor of this Kaigi.

At hey, inc., our goal is to enable creative and passionate business owners to grow their businesses. From creating an online store with a professional look and feel, to supporting a cashless payments system at a physical store, our STORES service provides a seamless integration between the online and offline aspects of your business.

Our mission is "Re:valuation - redefining the value of things", and we are developing and operating "Rakuma", the first flea market app launched in Japan.
The number of downloads of the iOS/Android app exceeded 25 million by June 2020, and even now the service is growing rapidly.
We are committed to three core values we develop.
1. User First
2. Ownership
3. Fail Smart
We are rooted in a culture that focuses on the user experience.

GMO Pepabo, Inc. is a Tokyo, Fukuoka and Kagoshima-based leading tech company. Under the philosophy of "Make It More Playful" and the slogan of "Using the Internet to deliver new possibilities", we provide twelve internet services for wide range of customers. We have ’Lolipop!’ as Shared Server Service, ’Color Me Shop’ as E-commerce service and 'minne' as C2C marketplace for handmade products. We have strong advantages in technologies including Ruby, Rails, and mruby. We have contributed to the Ruby world for years; we employ a CRuby committer and many prominent Ruby hackers.

Turning encounters into innovation.
Our world is built on encounters; they are the very basis of society. We want to change the way people do business by revealing the potential of every encounter. We aim to foster encounters that will bring about innovation in all areas, and in doing so develop innovative functionality in our products. We will change the way people think about their business encounters, and even change the way those encounters take place.

We've been developing Rails apps and iOS/Android apps since 2007, and also publishing tech articles on our blog "TechRacho": https://techracho.bpsinc.jp/

Money Forward is a fintech startup delivering tools to visualize and improve both individuals’ and SMEs’ financial health.
Our BtoC service “Money Forward ME”, is the largest personal financial management application in Japan.
Through web, smartphone and tablet, we automatically integrate data from over 2.6K data sources and deliver the service to more than 10.5M users.
Our BtoB service “Money Forward Cloud” is a SaaS based solution for back office optimization.
In return to the power of open source we have benefited since launch of our product, we have employed a fulltime committer to further enhance the Ruby community.
Simply put, Money Forward moves your life forward, and Ruby further.

Cooking isn’t just a matter of putting together ingredients. 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. Cookpad has provided online recipe sharing and search services. It’s a global platform used by over 100 million people every month across the world. (as of June, 2020).

Shopify is a leading global commerce company, providing trusted tools to start, grow, market, and manage a retail business of any size. Shopify makes commerce better for everyone with a platform and services that are engineered for reliability. Now powering 1 million businesses globally, Shopify is using Ruby to ship at scale.

MedPeer, Inc. is a "HealthTech" company founded by a doctor. We operate MedPeer, one of the largest online community for doctors where 1 out of 3 doctors in Japan participate. We also provide other healthcare services. Our development language is Ruby, and we actively adopt useful tools. We aim to reinvent healthcare with a "collective intelligence" of 120,000 doctors accumulated on our platform and technology.

Our mission is "Making your local life smarter and more fun". Tokubai has been grown up since we started the service in 2013 and became one of the largest digital flyer and bargain information service in Japan. More than 51,000 retailers from all over Japan deliver valuable information to the customer through our platform. We support the development of the Ruby community as it continues to enable us to deliver our value to users quickly and safely. [We renamed our company Locoguide inc. from Tokubai in Aug 2019.]

Supporting creators around the world, pixiv Inc. provides various services which are visited by more than 40 million creators and their fans.

Classi provides a web-based system leveraging artificial intelligence to liberate the infinite possibilities of every student. This system contains functions for students, teachers and parents.

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.