SourceGear

SourceGear DiffMerge
FreeSourceGear: Visualize and Merge File Changes Graphically
Windows
SourceGear DiffMerge for Ubuntu (64-bit)
FreeComprehensive Tool for File Comparison
Linux
SourceGear DiffMerge (64-Bit)
FreeDiffMerge: Powerful Visual File and Folder Comparison
WindowsVault Professional
Trial versionEfficient Version Control with Vault Professional
Windows
Veracity for Ubuntu
FreeEfficient Version Control with Veracity for Ubuntu
LinuxDiffMerge
FreeComprehensive File Comparison Tool for Developers
Mac
Veracity (64-Bit)
FreeComprehensive Overview of Veracity (64-Bit)
WindowsVault Professional (64-Bit)
Trial versionVault Pro: Unified Version Control and Work Item Tracking
Windows
Vault Professional Client
Trial versionPro Version Control with Integrated Work Item Tracking
Windows
SourceGear DiffMerge
FreeEfficient File Comparison with SourceGear DiffMerge
Mac