SQLiteStudio
Create, edit, browse SQLite databases.
Download Donate3.4.19 released
Yet another bugfix release. Most notably it solves problem with entering edit mode in data grid view - a problem introduced in 3.4.18.
Open Source
It's released under GPL license and is free to use for any purpose.
Cross-platform
Runs on Windows, Linux and MacOS X.
Portable
No need to install or uninstall. Just download, decompress and run.