Git

you can thank our lord savior linus torvald (founder of Linux) for making git available to everyone

It takes "saving your work" to a new level. It's a lot like the snapshots feature for virtual machines

Fast, a bit too intimidating at first without proper basics, but one of the better alternatives and by far the most popular choice

I find git needlessly complicated in comparison to Mercurial, so I use that instead.

Pro's:

• there are many source repo platforms that support git.
• it has many client programs like smart-git
• very easy to script
• there is many documentation
• a real must when your somewhat into programming or scripting
• great integration with many IDE's like VSCodium or IntelliJ
• it's has CLI and GUI

Con's:

• it can have a steep learning curve.