I lovefrom Atlassian. But this is my personal opinion. The main down side is that every user in a company needs a personal account.
There is an old Player:. But I’m not a fan of this tool. There are to much points to see that it comes from TortoiseSVN and it feels more like SVN over Git…
is a Client with a longer history. It’s a client with a lot of features. But it’s not free for commercial projects.
A new client is. It is one of the youngest tool Git GUI. (Started Nov 2015) So, there will be some points, but it has some great features and a lot of keyboard shortcuts. And the main benefit: It runs on all major systems: Windows, OSX and Linux.
And: There is the official Git GUI client. But… don’t try it 😉
There are some others, visitfor more information.