Yomu and Sai no Kawara Are Listed on Tsukutta

Yomu and Sai no Kawara are now listed on Tsukutta, a Japanese platform for discovering and sharing web apps and independent software.

Yomu was added on September 1, 2026, and Sai no Kawara on September 15, 2026. I am documenting the listings after their pages, screenshots, descriptions, and links back to the official products have been put in place.

Why use Tsukutta in addition to the official site

The official oka-project pages remain the source of truth for each product, but an official site mainly reaches people who already know the project or arrive through search. A discovery platform creates a different path: someone browsing categories, tags, or other independent apps can encounter a project without searching for its name first.

Tsukutta provides app descriptions, screenshots, creator information, links to the live product, and community reactions. I use that space as an additional introduction to the project rather than as a replacement for the official documentation.

The goal is not to accumulate directory listings as a metric. The useful part is having a clear, accurate explanation of each project in places where people are already looking for new tools or games.

Yomu is listed as a business tool

Yomu is a browser-based Markdown editor for reviewing a Markdown source and moving it into publishing or document formats such as WordPress, DOCX, HTML, and PDF.

On Tsukutta, Yomu is listed in the Business Tools area with tags related to Markdown, AI, browser tools, and productivity. The listing includes screenshots and a concise explanation of the workflow, including the browser-based processing model.

The Tsukutta page itself is primarily for a Japanese audience, while international users can move from the listing to Yomu's dedicated English page.

View Yomu on Tsukutta

Open Yomu in English

Sai no Kawara is listed as a game

Sai no Kawara is a browser-based idle and incremental game inspired by a Japanese folklore motif of repeatedly stacking stones and having that work undone. The core loop turns destruction and restarting into part of long-term progression.

On Tsukutta, it is listed in the Games area with tags related to idle, incremental, and browser games. The listing includes multiple screenshots so that visitors can see the visual tone of the game before opening it.

Unlike Yomu, Sai no Kawara currently uses one shared product URL rather than a separate /en/ page. The game itself supports English, Japanese, Traditional Chinese, Simplified Chinese, and Korean from the same interface.

View Sai no Kawara on Tsukutta

Play Sai no Kawara

External listings are discovery layers, not the source of truth

Product details, current features, and the actual browser tools continue to live on oka-project. Tsukutta is one of several possible discovery layers: a place to understand the project quickly, see screenshots, and follow the link to the live version.

I will continue adding external listings when they create a meaningful discovery path or make a project easier to evaluate. I do not plan to treat the number of directories as an objective by itself; keeping each listing accurate and useful matters more than simply being present in more places.