ruhenheim.org is an app portfolio maintained by the individual developer @erumdoor / nikopyonzoku. The site describes itself as a “place for small tools.” It is not a single SaaS product, but rather a collection of lightweight utilities built around everyday problems, covering platforms such as Windows, Chrome, VS Code, iOS/Android/Web, and more. The developer’s background is as an SIer infrastructure engineer.
From a developer-tooling perspective, the most relevant items are its VS Code extensions and collaboration-tool enhancements. UndoTree History visualizes the Undo history tree in VS Code by save point, making it easier to review branching edit history. MemoBox is designed for everyday notes inside VS Code, including appending notes, search, tag browsing, and Todo extraction, with optional AI assistance mentioned. On the Chrome side, Tadorun is used to search bookmarks and history. Mattermost Deck adds multiple panels to the right side of Mattermost Web, making it easier to track mentions, channels, DMs, and search results side by side. Other tools include Kiritori for pinning screenshots on top, multi-stream Twitch viewing, live-stream push notifications, and moving windows across multiple monitors.
The site does not disclose specific pricing, subscription models, or payment methods. It only mentions the option to donate coffee money to support development. It also does not state whether the tools are open source, nor does it provide source-code links, licenses, or self-hosting options. As such, it should not be treated as an auditable, privately deployable enterprise-grade toolchain.
The main advantage is that each tool addresses a clearly defined problem, and distribution through channels such as Microsoft Store, Chrome Web Store, and VS Code Marketplace makes installation relatively straightforward. It can be useful for individual developers, heavy VS Code users, Chrome users, Mattermost Web users, and office users working with multiple monitors. The downside is that the site is mainly a portfolio-style introduction and lacks systematic documentation, changelogs, support SLAs, compatibility matrices, and pricing details. Some tools are also strongly platform-dependent; for example, Kiritori currently only has a public Windows version, while the macOS version is no longer publicly available.
The crawled content does not provide information about access from mainland China, network acceleration, or payment options, so availability is unknown. Actual use may also depend on the accessibility of external services such as Chrome Web Store, VS Code Marketplace, Microsoft Store, Twitch, and Mattermost. Alternatives include other VS Code note-taking/history extensions, PowerToys, ShareX, browser bookmark-management extensions, or Mattermost’s native features.
⚠ 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 ruhenheim.org official site.
ruhenheim.org is an Japan Dev Tools provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach ruhenheim.org directly.