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## SQLite Support Options

### Professional Support

If you would like professional support for SQLite or if you want custom modifications performed by the original author of SQLite, these services are available for a modest fee. For additional information visit http://www.hwaci.com/sw/sqlite/prosupport.html or contact:

D. Richard Hipp Hwaci - Applied Software Research 704.948.4565 drh@hwaci.com |

### Proprietary SQLite Extensions

The core SQLite library found on this website is in the public domain. But there also exist proprietary, licensed extensions to SQLite, written and maintained by the original developer.

- The SQLite Encryption Extension (SEE) will read and write database file encrypted using 128-bit or 256-bit AES.

- The SQLite Compressed and Encrypted Read-Only Database (CEROD) extension will read a database file that is both compressed and encrypted.

- The ZIPVFS extension will both read and write database files that is both compressed and optionally encrypted using application-supplied compression and encryption routines.

- The Test Harness #3 (TH3) is an alternative set of test vectors for SQLite that verify the operation of SQLite in an as-deployed configuration on embedded platforms with 100% branch test coverage.

### Mailing Lists

Three separate mailing lists have been established to help support SQLite:

- sqlite-announce - announcements of new releases or significant developments.
- sqlite-users - general user discussion; most postings belong here.
- sqlite-dev - developer conversations; for people who have or aspire to have write permission on the SQLite source code repository.

Most users of SQLite will want to join the sqlite-announce list and many will want to join the sqlite-users list. The sqlite-dev list is more specialized and appeals to a narrower audience. Off-site archives of the sqlite-users list are available at:

> http://www.mail-archive.com/sqlite-users%40sqlite.org/
> http://marc.info/?l=sqlite-users&r=1&w=2
> http://news.gmane.org/gmane.comp.db.sqlite.general

### Direct E-Mail To The Author

Use the mailing list. Please do not send email directly to the author of SQLite unless:

- You have or intend to acquire a professional support contract as described above, or
- You are working on an open source project.

You are welcomed to use SQLite in closed source, proprietary, and/or commercial projects and to ask questions about such use on the public mailing list. But please do not ask to receive free direct technical support. The software is free; direct technical support is not.