There are lots of database engines in the world.    
There are a growing number of open-source embedded database engines.    
How can you know which engine is right for your application?    
    
This page provides links to comparisons between SQLite and    
other database engines.  The information that this page links to    
is intended to provide designers with information to help them    
choose the best database for their particular situation.  If you    
find additional comparision information, please add a link to this    
page.    
    
*: SqliteVersusDerby - A comparision of SQLite and the CloudScape/Derby    
   database recently open-sourced by IBM.    
    
*: SqliteVersusDbstar - A comparision of SQLite and the db.* database engine    
    recently open-sourced by ITTIA.    
    
*: What about EmbeddedMySQL?: ({link:    
http://dev.mysql.com/doc/mysql/en/libmysqld_overview.html description})  I    
don't know enough to do a comparison myself, but it seems to have a lot of    
overlap.    
    
A big turn off for EmbeddedMySQL is their license - here's an extract:    
_:"The MySQL source code is covered by the GNU GPL license (see section G GNU    
General Public License). One result of this is that any program which includes,    
by linking with libmysqld, the MySQL source code must be released as free    
software (under a license compatible with the GPL)." (added by    
{link:http://www.smartpethealth.com DV})    
    
Another turn off is its size: when i link SQLite into my app the difference is    
barely noticed not so with EmbeddedMySQL.     
    
*: What about SimpleSQL?: ({link: http://www.simplesql.org/ for description})    
see: http://www.algonet.se/~blomster/licensing.html    
    
*: Sqlite Versus {link: http://firebird.sourceforge.net/ Firebird}  -   
Firebird is open source, cross platform, embeddable, has wrappers for many 
language. Firebird is a full featured database and has a footprint of 2-3 
MByte. A good choice when SQLite is too lite. Firebird can be used free of 
charge even for closed source projects.