About Mozc
For historical reasons, the project name "Mozc" has two different meanings:
- Code name of Google Japanese Input used inside Google.
- Name of the project to release a subset of Google Japanese Input in the form of source code under open source license.
Outside Google, "Mozc" should mean the second definition unless otherwise noted.
Differences between Google Japanese Input and Mozc
Mozc is a product branched from Google Japanese Input. Basically they are different products. The following table describes major differences between them.
| Product Name | Google Japanese Input Stable Version
Google 日本語入力安定版 | Google Japanese Input Development Version
Google 日本語入力開発版 | Mozc |
| Branding | Google Japanese Input
Google 日本語入力 | Google Japanese Input
Google 日本語入力 | Mozc |
| Release Form | Binary Installer | Binary Installer | Source code |
| License Agreement | Available on the installation page | Available on the installation page | 3-Clause BSD License (except for third-party code) |
| Target Platform | Microsoft Windows
Apple OS X
Android
Google Chrome OS | Microsoft Windows
Apple OS X | Microsoft Windows
Apple OS X
Android
Chromium OS
GNU/Linux |
| Version String | GoogleJapaneseInput-1.x.yyyy.0 (Windows)
GoogleJapaneseInput-1.x.yyyy.1 (Mac)
GoogleJapaneseInput-1.x.yyyy.3 (Android)
GoogleJapaneseInput-1.x.yyyy.4 (Chrome OS) | GoogleJapaneseInput-1.x.yyyy.100 (Windows)
GoogleJapaneseInput-1.x.yyyy.101 (Mac) | Mozc-1.x.yyyy.102 |
| Logo | Colorful | Colorful | Orange |
| Code Location | Google internal | Google internal | Mozc branch |
| System Dictionary | Google internal | Google internal | Mozc dictionary |
| Usage Dictionary | Japanese Usage Dictionary | Japanese Usage Dictionary | Japanese Usage Dictionary |
| Collocation Data | Google internal | Google internal | Only examples are available |
| Reading Correction Data | Google internal | Google internal | Only an example is available |
| Suggestion Filter | Google internal | Google internal | Only an example is available |
| Japanese ZIP Code Dictionary | Included | Included | Not included. You can add it by yourself |
| Quality Assurance | New releases are tested by Google before sending to users | Basically the same to Stable but some additional QA tests are skipped before sending to users | No official QA by Google |
| Crash Reporting | Chrome OS: Integrated into the OS settings
Other platforms: No by default. You can turn it on | Yes | No |
| User Metrics Reporting | Chrome OS: No
Other platforms: No by default. You can turn it on | Yes | No |
| Google Update | Android : No
Other platforms: Yes | Yes | No |
| Other Online Features | Not supported yet | Cloud Handwriting | Nothing |