Which git hosting provider would you use for commercial development?
Edit: Let's not turn this question into a discussion of whether a hosting provider is really necessary for a distributed SCM. Have a look at github to see some of the benefits a hosting provider might give you.
Second, the fact that git is distributed is hardly the only benefit to use it over svn. For example, branching and especially merging is much easier in git.
Assembla is also reasonable too. They also offer free private hosting for small teams, commercial or otherwise.
Edit: Assembla is no longer free for private teams, but it's still relatively inexpensive.
For commercial development I'd use my own server. If your business relies heavily on your source-code then you might consider holding the source with your own hands.
GitHub is simply awesome. I would highly recommend it. Lots of features and an inspired UI design. Crisp, clean and clear.
If you want to set up your own web-facing server to host git, make yourself a favor and check out Gitosis. It's a Python script that lets you manage multiple repositories, manage access with public keys and everything.
The best part? You server's config files are in a git repo on the server and you only have to push your new changes to the server and it will take the new config into account. This means at any time you can roll back to a previous state of the config :-)
I would recommend Codebase. They have tickets, milestones and timetracking, and you can log time and change ticket status from commit messages.
Gitorious would be awesome if they managed to make the installation process easier. I failed in my attempt on creating a private host. Yes, the source code is FOSS so you are free to use it in your private network.
But it seems installing it requires intimate knowledge on Ruby on Rails as the installation is challenging to say the least. Looks nice and unlke GitHub, you can use your own private hosts.
Question: What is your motivation for hosting externally?
Answer? Availability? Irrelevant with git, as local == remote == local in terms of access. You are decoupled from the network. Availability is irrelevant.
Answer? Disaster recovery?
Better answer, but still mostly irrelevant: you can easily promote ANY local or remote repository to be the master if you wish.
Nuclear warfare - surviving Armageddon? Irrelevant - you'll be too busy surviving to care about your git repositories.
I have a repository on my webhost simply because it's the one place I can guarantee I can access from all the places I go. But I still prefer to use my home webserver as my repository of record instead - there's just certain types of customer data I can't put on the WWW.
You can also use InDefero which is a clone of GoogleCode with private/public projects. You get unlimited private projects and 1GB storage for $30/year. You also have private projects with the free version. The good point is that the engine is available (GPL) and you can import everything in your own instance down the road, no lock in problems. Note: I am the lead dev of InDefero.
I've recently found Project Locker. It's not instant signup annoyingly and I'm still waiting for my account activation but the service levels are interesting because the Free level has 500MB of space, 5 users, Subversion, Git, multiple repositories and SSL support for nothing.
I'm using SourceRepo.com (a.k.a. GitRepo.com and SVNRepository.com) and have been quite happy so far. The price is better than the competition, it's extremely easy to set up users (for the team and for clients) and it supports SVN, Git, Trac and Redmine.
In my experience GitHub and the other repo hosting providers go down way too often to be useful in a day-to-day development cycle. It obviously can be used to supplement your own hosting, though, as a backup and a nice commit/code browser/wiki/etc. Definitely don't rely on it as your origin. Your developers will go mad.
If it's commercial: large-scale: set up an own server with appropriate backup small-scale: use dropbox and set up a git repo there
Don't forget repositoryhosting.com, their price is very affordable.
We've just released our beta Git service at Codesion.com (CVSDude), with the same enterprise grade security, phone support, backups and redundancy as our SVN / CVS service.