One Act US, Inc.

A global Startup engaged in Software development and AI technology development.
One Act US, Inc.

One Act US, Inc.

A global Startup engaged in Software development and AI technology development.




News   2023/5/13.................................................................................. Read More "News"


  Innovation Starts Here at PieceX! The world's first AI-Powered Source Code Marketplace. By tr... Read More "Products"


Job offer information   We are looking for the talent to work with us to create companies / ser... Read More "Careers"


Members     Representative Director and CEO Yusuke Asano, Japan, 1978    &n... Read More "Members"

About us


Company overview

One Act US is a global startup engaged in marketing and sales of “PieceX”.
Headquarters in the US, it has offices in Japan, France, India, and the UK.
Our main service, “PieceX”, is the world’s first AI-powered source code marketplace. By trading high-quality source code (text files of computer programs) globally, it revolutionizes the traditional software development process.
Buyer companies (any business or software development companies) can purchase ready-to-use software components with a guarantee, eliminating the need to develop software from scratch, and reducing traditional software development time and costs by over 80%.
Seller companies (software development companies or businesses that own the copyright to source code) can generate new recurring revenue directly from the source code itself and engage in high-profit-margin business.
PieceX already has a track record of transactions in more than 200 countries and regions worldwide, and by becoming an innovative web infrastructure that enables anyone in the world to quickly develop new services, it is creating a new economy in the world.

Awards: One Act / One Act US / One Act UK
Europe 4YFN 2022 Best Startup Selection
Japan Independents Club Grand Prix 2022 Annual Grand Prix Winner
USA Top 50 most admired companies to watch 2022
Middle east & Africa Supernova 2022 AI Innovator Finalist
India Transformational CEO’s 2022
UK Best Software Development CEO 2022
USA 20 Most Trustworthy Companies of the year in 2023
USA Inspirational Business Leaders To Watch 2023
USA 30 Innovative Brands of the Year 2023
USA Asia’s Most Influential Leaders of The 2023


Company name:One Act US, Inc.

Date of Establishment:April, 2021

Executives:CEO Yusuke Asano

· Development and management of our service PieceX
· AI technology development
· System Consulting
· System development, Software development

Address:2450 Colorado Avenue, Suite 100E, Santa Monica, California, 90404, USA



JP Affiliate
One Act, Inc.
INOUE BLDG2-405, 2-17-13, NihonbashiKayabacho, Chuo, Tokyo, 103-0025, Japan

UK Affiliate
One Act UK, Ltd.
35 New Broad Street, New Broad Street House, London EC2M 1NH, UK