One technical thing to note: Although the application itself is not open source, the developer has open-sourced a restore tool, to help ease the "what if they

One technical thing to note: Although the application itself is not open source, the developer has open-sourced a restore tool, to help ease the "what if they go out of business" concerns: https://github.com/sreitshamer/arq_restore https://github.com/sreitshamer/arq_restore Also, somebody else has created a Go utility that can read the backup format: https://github.com/asimihsan/arqinator https://github.com/asimihsan/arqinator Finally, if you really wanted to do it all yourself, the data format is documented here: http://www.haystacksoftware.com/arq/s3_data_format.txt http://www.haystacksoftware.com/arq/s3_data_format.txt