SQLiteStudio

Just to open and edit a SQLite file, a big client is overkill. SQLiteStudio is built for it: a free, open-source, cross-platform SQLite manager written in C++ with Qt.

Features

SQLite-Focused: Dedicated to SQLite.

Cross-Platform: Qt-based, multi-OS.

Portable: Copy-and-run edition.

Open Source: C++ and free.