Download of SQLitePluginPro 1.4 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The application lies within Developer Tools, more precisely General. This software for Mac OS X is a product of REAL Software.
From the developer:
SQLitePluginPro is a fast and reliable replacement for REALbasic's built-in database engine. Any existing REALbasic project that uses the built-in database can be easily and quickly modified to use a SQLite database. SQLite's on-the-fly indexing and ACID transactions ensure that SQLitePluginPro databases are both fast and free from corruption.
You may want to check out more software for Mac, such as BetaBuilder for iOS Apps, which might be similar to SQLitePluginPro.