gacco

What gacco is

gacco is a Japanese MOOC service, a site where anyone can register and take open online courses built mostly around video lectures. It is a product for learners. The top page sums up the offer in one line, "いつでも、どこでも、大学の知を無料で学べる" (learn university knowledge for free, anytime and anywhere), and describes gacco as a massive open online course service officially recognized by JMOOC, the Japan Open Online Education Promotion Council (日本オープンオンライン教育推進協議会). A "Certified by JMOOC" mark sits at the foot of every page.

The About page frames the service around lifelong learning. Its headline promises "人生100年時代の学び" (learning for an age when people live to 100), and it calls gacco "日本最大級のオンライン動画学習サービス", one of the largest online video learning services in Japan, covering everything "すぐに役立つスキルからずっと役立つ教養まで" (from skills that are useful right away to a general education that stays useful for good). The same page says gacco works to spread the open online education that JMOOC promotes, and that it aims to give people of any age learning they can start right away and keep up for as long as they want. The whole site is written in Japanese.

Size and history

The About page gives one headline figure, and gives it twice: "100万人がもう始めている" (one million people have already started), and further down, that more than one million members already use the service (すでに100万人以上の会員). Those are member numbers. They say how many people have signed up, not how many have finished a course.

gacco launched in 2014. In the About page's words it was born from a collaboration between JMOOC, NTT Docomo and NTTナレッジ・スクウェア, and JMOOC has been involved in rolling out courses since the start by recommending and supporting instructors. The previous operator's own site described gacco in its page description as "日本初のMOOC講座" (Japan's first MOOC course), free to study, and said it planned to grow a wider "gacco Style", where people across generations and regions gather to learn both online and offline, alongside original training programs developed for government bodies and companies.

The 2026 change of operator

The service changed hands in 2026, and a learner signing up now should know it. A notice from DOCOMO gacco, Inc. (株式会社ドコモgacco), linked from gacco.org, says that company dissolved on March 31, 2026, ended its own service provision the same day, and plans to complete its liquidation by June 30, 2026. The gacco online video learning business was transferred to Digital Knowledge Co., Ltd. (株式会社デジタル・ナレッジ), which has provided gacco since April 1, 2026, and the notice points readers to a gacco product page on the Digital Knowledge site.

The About page has caught up with the change: it now states that Digital Knowledge runs the service. Registration and the member area are still open on gacco.org under the same name, so for a learner the service carries on with a new company behind it.

Courses and formats

gacco's catalog runs from serious university-level general education to practical business skills. The About page says the lineup stretches "本格的な大学レベルの教養講座からリスキリングのためのビジネススキル講座まで" (from full university-level liberal arts courses to business skills courses for reskilling), a broad range meant to answer whatever a learner wants to study. The course list page describes its offer as online video courses taught by top instructors, university professors among them. The site's menu adds a "Pickup category" section and a set of trending keywords (話題のキーワード) to help learners find a topic.

The course list also carries a separate list of courses that have closed to new enrollment (新規受付を終了した講座一覧). Courses on gacco open and close, so a course a friend took last year may not be accepting new learners today, and a learner browsing the catalog will see both kinds.

The base format is the video lecture, watched on a computer or a phone. The About page stresses short sessions: learning can start easily in spare moments (スキマ時間), "PCからでもスマホからでも" (from a PC or a smartphone). That suits people fitting study around a job, a commute or family life.

Some courses go well beyond video. The About page says that, depending on the course, learners deepen what they learn through two-way output: discussions, assignment submissions, peer-graded reports (相互採点レポート) and face-to-face classes (対面授業). That mix is the main thing that separates gacco from a plain video library. A learner who only wants to watch lectures can do that, while one who wants feedback from other learners, written work to hand in, or a classroom session can pick courses that include those elements. Which elements a course includes varies from course to course.

Enrollment follows four steps set out on the About page: find a course that interests you, register for it, see it appear on your My Page (マイページ), then choose it from My Page and start studying. A fuller course-taking guide (受講ガイド) sits in the main menu, and a separate support site handles help questions, along with a notices section for service announcements.

Certificates

Learners who meet a course's set criteria receive a certificate of completion (修了証). The About page is direct about what that certificate is not: "修了証は、大学の単位、公的資格等を証明するものではありません" (a certificate of completion does not certify university credit, a public qualification or the like). That line deserves a careful read. A gacco certificate records that a learner finished a course to its standard. It is not a degree, it carries no university credit, and it is not a state qualification.

Cost and registration

The About page calls gacco "原則無料" (free in principle), and the top page's tagline promises university knowledge for free. Member registration is free, labeled 会員登録 (無料) in the header, and the member area holds each learner's enrolled courses. "Free in principle" leaves room for exceptions, and the pages list no fees or paid courses.

For organizations

The main menu includes a corporate inquiries desk (法人向け窓口), so gacco also takes inquiries from companies and other organizations. The previous operator's site mentioned original training development for government bodies and companies as part of its work. The gacco pages publish no corporate plans or prices.

Who it suits

gacco suits Japanese-speaking adults who want university-level liberal arts or practical business skills without paying tuition. Working people reskilling in short sessions on a phone fit the format well, as do older learners continuing to study, since the "100-year life" framing invites learners of any age. It also suits anyone who wants to try a university lecture before committing to a formal program. Courses with discussions, peer-graded reports or classroom sessions add structure that a plain video library lacks, which helps learners who need a reason to keep going.

It suits fewer people who need a credential that counts. The certificate of completion is explicitly not university credit or a public qualification, so anyone who needs credits, a degree or a professional license should treat gacco as preparation or enrichment rather than the credential itself. The site is in Japanese, which limits it to learners who read Japanese comfortably. And learners who care about who runs a service should know that the operator changed in April 2026; the About page names Digital Knowledge as the current operator, and the service continues under the gacco name with JMOOC certification still shown on its pages.