If you finding freeware tool to open SQL database, get SysTools utility which provides freeware software to open SQL database and view corrupted MDF file without any cost. You can use freeware software to open SQL database and read corrupt MDF files present in the SQL Server Database. Database corruption is a common problem by chance your SQL database gets corrupt due to logical reasons in that situation you are confused how to open SQL database? Don't worry! You can try freeware software for open SQL database which allows you to open SQL database and view all database from corrupted or damaged SQL server free of cost, but this free open SQL database doesn't allow you save open corrupted SQL database save in your SQL server, if you want to directly save open SQL database in your SQL server then you can purchase SysTools SQL Recovery Software at $129. If you want to save the repaired MDF file elements in SQL Server Database, then you need to buy the full version for this purpose.