SQLite is a kind of database that is self-contained, serverless, no-configuration requires, transectional SQL database engine. SQLite is the most widely deployed database engine.
You may read more from SQLite official site.
You can manage the SQLite DB in your computer using very handy firefox extension.
Here is the link of firefox extension add this extension in your firefox and use the SQLite database features from today.
It will give you an interface that is very easy and alike other database clients that you may have already used.
You can easily create new database, tables, perform sql queries here and enjoy the SQLite easily.