Ptrack is a fast block-level incremental backup engine for PostgreSQL.
Currentlyptrack codebase is split approximately 50%/50% between
PostgreSQL core patch and extension. All public SQL API methods are
placed in theptrack extension, while the main engine is still in core.

Credits to:

• Konstantin Knizhnik
• Anastasia Lubennikova
• Alexey Kondratov