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Guppy Web Service LLC. is a system development and system support provider based in Tokyo, Japan, with a core focus on Claris FileMaker. Its website explains that it uses FileMaker—a tool that combines database and interface development—to turn clients’ business problems into applications. It also provides tips, sample files, and related consulting.
Based on the available text, GWS’s main services include FileMaker system and sample development, consulting on how to use FileMaker, and integration development connecting FileMaker with other systems and databases. Its background also covers web application server system development and internal enterprise system construction, allowing it to support a relatively broad workflow from proposal through operations. Clients can receive design documents during the design phase, with sample files added if needed. Later, clients may also use the samples as a basis for in-house development, with technical support provided by GWS.
Pricing is project-based. Public information indicates that, during the design phase, if only a design document is delivered, the estimated maximum cost is around 300,000 JPY, with the exact quote depending on project scale. If sample files are required, additional fees apply. The main development phase varies significantly by function and scale, so separate consultation is required. In addition to development fees, clients need to prepare FileMaker Pro, FileMaker Cloud, or FileMaker Server, as well as devices such as PCs, iPads, and iPhones. On-site testing is carried out in the client’s environment.
GWS accepts commissioned work through platforms such as Lancers, CrowdWorks, and MENTA, and can also be contacted via its website and SNS channels. For first-time collaboration, it recommends using a cloud matching service with third-party involvement to reduce transaction risk. It can sign NDAs via CloudSign and states that it can issue invoices with an インボイス number. The website also lists channels including Qiita, Zenn, note, X, Instagram, and YouTube, suggesting a certain level of content output and community participation.
Its strengths are a clear positioning, a strong focus on FileMaker, relatively transparent disclosure of fee stages and transaction channels, and the ability to handle consulting, development, integration, and support. Its limitations are that it is not a standardized SaaS product or downloadable developer tool, and it lacks public API/SDK information, open-source resources, and complete technical documentation. The service language is mainly Japanese, and clients must separately cover FileMaker licensing and runtime environment costs. It is best suited to SMEs and teams in Japan, or those with Japanese-language communication capabilities, that want to quickly build internal systems with FileMaker.
The collected text does not provide information on access from mainland China, payment, or compliance, so the actual access status is unknown. Chinese teams needing similar capabilities may consider official Claris FileMaker partners, domestic low-code platform consultants, or local service providers based on Power Apps, Access, or web database solutions.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on guppywebservice.info official site.
guppywebservice.info is an Japan Dev Tools provider. TG4G tracks its product information, an overall rating of 5.0/10, and a China-accessibility score of Limited (proxy recommended). Click "Visit Official Site" to reach guppywebservice.info directly.