Tachiyomi App is a popular open-source manga reader known for its flexibility, extensive extension ecosystem, and active developer community. Because the app and its extensions are free and open source, much of the project’s development happens on GitHub. Multiple repositories—official, archived, and community-maintained—collectively keep the ecosystem running.
This post explores the key Tachiyomi-related repositories on GitHub, what each one contains, why they matter, and how both users and developers can interact with them.
| Repository | Description |
|---|---|
| Tachiyomi Extensions Archive | Archive of removed and deprecated Tachiyomi extensions |
| Tachiyomi Extensions (GitHub Topic) | GitHub topic listing all Tachiyomi-related extension repositories |
| Keiyoushi Extensions | Actively maintained third-party extensions (popular for Mihon & forks) |
| Yuzono Tachiyomi Extensions | Community-created and maintained extension sources |
| Suwayomi Extensions | Extension collection built for Suwayomi & related variants |
Overview of the Key Repositories
1. tachiyomi-extensions-archive (by timschneeb)
This repository stores removed or deprecated Tachiyomi extensions. These extensions may have been taken down due to legal issues, website shutdowns, outdated code, or broken sources.
What it contains
- Historical versions of extensions no longer active
- Source code preserved for reference or potential reuse
- A cleaner way to separate legacy extensions from current ones
Why it was created
The archive ensures that valuable work isn’t lost. Even though these extensions are not supported, they provide important historical context, help developers learn from past implementations, and maintain transparency for the open-source community.
2. tachiyomiorg (Official Organization on GitHub)
This is the main home of Tachiyomi’s core code and related projects. It includes the main app, extension repositories, website files, and documentation.
What you’ll find here
- The main Tachiyomi app source
- Current official extensions
- Website and documentation code
- Issues, pull requests, and development history
Recent status update
The organization previously announced a pause in active development due to legal concerns. While the code remains available, users rely more heavily on forks, mirrors, and community-run projects to keep the ecosystem alive.
3. GitHub Topic: tachiyomi-extensions
This topic page lists a wide collection of Tachiyomi-related extension repos from both official and community developers. GitHub topics act as a discovery tool—any repository tagged with “tachiyomi-extensions” appears here.
Why it’s useful
- Helps users find new or alternative sources
- Allows developers to see how others structure extensions
- Provides a wider view of the ecosystem beyond official repos
4. keiyoushi/extensions (Community Repository)
This third-party repository is widely used by Mihon (a popular Tachiyomi fork) and related variants. It hosts actively maintained extensions not included in the official org.
What it offers
- A fresh set of updated extensions
- Support for forks like Mihon
- Faster updates for some sources
How it differs from official repos
- Independent development
- More frequently updated in some cases
- Not bound by the same restrictions official repos faced
Usage instructions
The README explains how to install these extensions manually or through compatible forks. Most users simply add the repo URL or install extensions directly from their fork’s extension catalog.
How the Repositories Are Organized & How to Use Them
Repository Structure
Most Tachiyomi-related repositories follow a clean structure:
- Kotlin-based code for the app and extensions
- Java used in older or legacy files
- Organized folders for UI, network requests, parsers, and source utilities
- README and CONTRIBUTING files for guidance
For Users
- Browse extensions directly on GitHub
- Download extension APKs if your fork allows manual installation
- Verify trust by checking who maintains the repo, update frequency, and issues status
For Developers / Contributors
- Fork a repository and clone it locally
- Follow CONTRIBUTING.md guidelines before submitting pull requests
- Study archived extensions to understand past implementations
- Use open issues as a starting point for contribution
Official vs Archive vs Community Repos
- Official: Main app + officially endorsed extensions
- Archived: Deprecated, removed, or legacy extensions
- Community: Independent extensions that may be more active than official ones
Why This Matters (Impact & Community Significance)
Preservation of the Open-Source Ecosystem
The archive ensures that important work is never lost. Even outdated code provides value to learners, researchers, and future developers.
Community Maintenance & Longevity
When development paused within the official organization, community forks and alternative repositories kept the ecosystem alive. This distributed model strengthens long-term project survival.
Extensions Keep the App Functional
Without extension repositories, Tachiyomi or its forks would be just empty shells. Updated sources ensure that users worldwide can keep reading from their preferred sites.
Community Forks Fill the Gaps
Projects like keiyoushi/extensions ensure new sources stay updated even when official development slows down.
Challenges & Considerations
Legal / Copyright Issues
Some extensions were removed due to DMCA takedowns or legal pressure. This is one reason the main dev team stepped back from active development.
Technical Maintenance
Extensions break frequently because source websites update layouts or anti-scraping protections. This requires fast patching and ongoing developer attention.
Trust & Security
Using third-party or unknown repositories carries risk. Users should trust maintainers with a reputation and an active community.
Future Stability
With official development paused, the ecosystem’s future relies on forks, mirrors, and dedicated community developers.
Getting Involved: How You Can Contribute or Use These Repos
For Users
- Explore extensions through your fork’s in-app catalog
- Manually install extensions when needed
- Choose safe, active repositories
- Follow maintainers for updates
For Developers
- Clone extension repos and study their code
- Build your own sources using existing templates
- Submit improvements through pull requests
- Help fix broken extensions
For Documentation Writers / Translators
- Improve READMEs
- Translate instructions
- Help maintain project websites and wikis
Conclusion
The Tachiyomi GitHub repositories form the backbone of its entire ecosystem. From archived extensions to active community forks, every repository plays an essential role. Whether you’re a user looking for reliable sources or a developer wanting to contribute, understanding these repos helps you navigate and support the platform’s future.
As official development slows, community participation becomes more important than ever. Explore the repositories, get involved where you can, and help keep this open-source project thriving.
Appendices / Additional Resources
Direct Repository Links
- tachiyomi-extensions-archive
- tachiyomiorg
- tachiyomi-extensions (GitHub topic)
- keiyoushi/extensions
Glossary
- Extension: Adds a manga source to the app
- Archive: Stores removed/legacy extensions
- Topic: GitHub label grouping related repositories
- Fork: A community continuation of an open-source project
Recommended Reading
- README files inside each repository
- Tachiyomi documentation
- Community forums and Discord groups
What is Tachiyomi APK?
Tachiyomi is a free, open-source manga reader for Android that supports extensions to add manga sources.
What is the Tachiyomi Extensions Archive?
It’s a repository that stores removed or deprecated extensions, preserving legacy sources and historical code.
What is the difference between official and community extension repositories?
Official repositories are maintained by the Tachiyomi organization. Community repositories are maintained by independent developers and may offer newer or alternative extensions.
How do I use extensions from these GitHub repositories?
You can browse the repository, download the extension APK (if available), or add the repository URL to a compatible Tachiyomi fork to install extensions.