SQLServerBooster - database free backup software
PlanetScale - The last database you'll ever need. Go from idea to IPO.
SQL Backup Master - SQL Backup Master - Free Off-Site SQL Backup Software
Petti - Effortless database backups
SysInfoTools SQL Backup Recovery Tool - Excellent tool to Repair the SQL backup files and restores BAK, MDF, and NDF files from it
DBeaver - DBeaver - Universal Database Manager and SQL Client.