Fossil is a simple, highly reliable, distributed software configuration management system with many advanced features. Fossil is a distributed version control system, bug tracking system used mainly in software development projects. Unless the other major version control systems like Git, Fossil has maintained a much lower profile.
Compared with other version control systems, Fossil has many advantages over them and the features are Integrated Bug tracking, Technotes, Simple Networking, Autosync, Merging and many other. Fossil uses an enduring file format which is designed to be readable, searchable, and extensible.