The 12 closest competitors and alternatives to Plainer among software companies — ranked by similarity to what Plainer actually does, not by market-cap band.
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PLAINER Inc. is a Tokyo-based company that serves innovative firms with software solutions and recently raised ¥400 million in a Series A funding round.
Plainer is a software company headquartered in Japan. Its most recent funding round, Series A, closed in May 2025. Xcout tracks 1 named person at Plainer, including Dai Kobayashi (founder and CEO).
Every round on record:
| Date | Round | Amount | Investors |
|---|---|---|---|
| Series A | Undisclosed | 7 named |
Who invested in each round, lead investors, valuations and the co-investor graph — open the full funding history →
Ranked by semantic similarity — how close each company is to Plainer by what it does, using Xcout's live company graph. Click any company for its full profile, or its competitor set.
SaaS
PLAID, Inc. is a Japanese company that creates and manages KARTE, a software-as-a-service (SaaS) platform designed to enhance customer experiences. Furthermore, it oversees the development and operation of two distinct digital publications: Shopping Tribe, which caters to the e-commerce sector, and XD, dedicated to insights into customer experience. Established in 2011, the firm's headquarters are located in Tokyo.
SaaS
circlace Inc., founded in Tokyo, Japan, in 2012, specializes in empowering Japanese businesses through the implementation and ongoing management of cloud infrastructure, in addition to offering its own proprietary cloud solutions. The company provides expert consulting to guide clients through digital transformation initiatives and enhance operational efficiency by leveraging information and communication technology (ICT). A significant part of its portfolio is the development and commercialization of various Software-as-a-Service (SaaS) products. These include Circlace, a comprehensive digital communication platform designed to consolidate business-related communications and documentation, thereby facilitating the visualization, storage, sharing, and effective utilization of organizational knowledge both internally and externally. Other key SaaS offerings are AGAVE, a specialized cloud service that streamlines human resource procedures for employees working abroad, and Prigister One, a tool engineered for managing applications involved in collecting personal data. Moreover, circlace delivers end-to-end support for integrating prominent third-party cloud solutions like Salesforce and Anaplan, covering every stage from initial design and development to successful deployment, ongoing maintenance, and operational oversight.
SaaS
TECHNOLOGIES, Inc. provides IT solutions primarily in the areas of AI and entertainment software fields in Japan. The company operates through two segments, IT Solutions and SaaS Business. It engages in the planning, development, and installation of software for gaming machines and 3D signage; projection mapping, virtual apparel try-on applications, and 3D animation video production. The company designs, develops, and provides various software, such as autonomous driving applications for automobile manufacturers; automotive remote-control systems; AI learning teaching materials with robots for children; and LIVE streaming applications. It also offers SAZANAMI SYSTEM, a system that performs automatic foreign exchange trading. In addition, the company develops and offers SaaS products, such as Jobs, a cloud-based management system for small and medium-sized temporary staffing companies; and Circle, a cloud-based business chat tool. The company was formerly known as BEL AIR Co., Ltd. and changed its name to TECHNOLOGIES, Inc. in May 2022. TECHNOLOGIES, Inc. was incorporated in 2014 and is headquartered in Tokyo, Japan.
Software Development
Codeplain is a software startup headquartered in San Francisco, California, focused on spec-driven development where code is regenerated rather than manually maintained.
SaaS
Headquartered in Tokyo, Japan, CS-C.Co.,Ltd. was established in 2011. The company specializes in delivering integrated marketing tools as a Software-as-a-Service (SaaS) model to clients across Japan. Among their specific offerings are the platforms C-mo and C+.
SaaS
Devplan is a Seattle-based startup that provides proactive product intelligence. Its platform, Devplan + Weaver, offers pre-computed signal intelligence to deliver faster responses and reduce token usage for product and engineering teams.
SaaS
株式会社TOKIUM is a Japanese technology company headquartered in Chuo City, Tokyo. Established in 2012, it provides corporate accounting software and AI-powered expense management solutions to streamline financial workflows.
Similar software company
Sotas is a business consulting and technology services firm headquartered in Kawasaki, Japan. The funded startup provides specialized data and digital solutions to support industrial sustainability and supply chain optimization.
Similar software company
Zeroboard Inc. provides the "Zeroboard" series of cloud solutions for collecting, managing, and reporting ESG-related data. Headquartered in Tokyo, Japan, the company supports businesses with software tools focused on carbon accounting and sustainability management.
Similar software company
AOTEN Inc. is a private company based in Tokyo, Japan, founded in 2015. It offers advertising delivery technology development services, as well as technology and big data solutions.
Sustainability Software
Plan A is a Berlin-based sustainability software company that provides businesses with tools for carbon accounting, emissions reduction and sustainability reporting. Its platform serves companies seeking to measure and manage their environmental impact and comply with ESG-related reporting requirements.
SaaS
Operating within Japan and across international markets, BPLATS,Inc. specializes in providing subscription-based solutions. A central component of its offerings is the Bplats platform, a comprehensive ecosystem designed to connect suppliers with sales outlets and facilitate all aspects of subscription management for large enterprises, encompassing everything from contractual agreements and transaction processing to billing. Furthermore, the company extends its services to include publishing and advisory functions. BPLATS, Inc. was established in 2006, with its corporate headquarters located in Tokyo, Japan.
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