Before I chose to replace TrueCrypt with VeraCrypt I was looking for/comparing alternatives.
I also use Bitlocker and EFS that are included with Windows.

• BestCrypt 
  • Paid
  • http://www.jetico.com/encryption-bestcrypt
• CipherShed 
  • Free, Open Source
  • Based on TrueCrypt
  • https://www.ciphershed.org
• DiskCryptor
  • Free, Open Source
  • Windows only
  • https://diskcryptor.net
• LibeCrypt
  • Free, Open Source
  • Windows only but supports dm-crypt/LUKS
  • Uses unsigned drivers
  • https://github.com/t-d-k/LibreCrypt
• Symantec Endpoint Encryption
  • Paid
  • Uses PGP
  • https://www.symantec.com/endpoint-encryption
• TrueCrypt
  • “Not secure” 
  • http://www.truecrypt.org
  • https://revlis.nl/2012/03/13/windows-7-backup-and-truecrypt
•  VeraCrypt
  • Free, Open Source
  • Based on TrueCrypt
  • https://veracrypt.codeplex.com
  • https://revlis.nl/2012/03/13/windows-7-backup-and-truecrypt

Except for DiskCryptor and LibreCrypt all these programs also run on Linux.

More here: http://www.surfsafely.com/truecrypt-alternatives