I'm trying to recover .php files from an accidental partition format. I've used a lot of software, but the results are the same, unreadable text that looks:
If you have deleted the partition, you may be better off recovering the entire partition rather than individual files. This looks like it will do the job http://www.easeus.com/partition-recovery/, but whether it is really 'free' or not can only be discovered when trying to recover the partition. I have used a very good command line based one before but I can't find it at the moment.