Bitbucket

Pros

I think the biggest pro with using Bitbucket is that it integrates extremely well with JIRA. This allows you to track your tickets with the branches you're working on and to easily see its progress during each sprint. It's intuitive and straightforward to use. It's also quick and almost rarely did we have any technical issues. Whenever we did have some issue, it was just with some expiring licenses which was easy to resolve. Permissions are additionally easy to manage. Overall, it's just an amazing tool that is 100% essential for our software team as it manages our repositories and allows to share, review, and manage our code across all teams.

Cons

The only downside I can think of is the scaling costs associated with it for the paid plans. Bitbucket charges per user. We have around 100 software engineers so it adds up a lot. Also, our engineers are quite experienced so working in Bitbucket hasn't been that much of a challenge. I've heard that engineers will lesser experience in repository management find Github to be easier to learn and implement but again, with greater experience comes a more expansive toolset.

Pros

A better integration with other Atlassian products as well as other products like Slack, the very useful pipeline feature that automates the building process, the simplest interface, private repositories even for free users.

Cons

To get the most and complete experience for this product is only if you have the Atlassian ecosystem,
not so stable as GitHub, but this problem is not common, unable to archive repositories, the search needs a little bit improvement.

Pros

I have been using Bitbucket (personally and commercially) for couple of years and I'm really satisfied with the services and features that they offer. Letting free users create unlimited repos and allowing up to five users is a good way to go, which attracts more users. Pull requests helps to get code reviewed by experts and get them approve before it available for others and helps to maintain quality code leading to quality software. More useful features like Pipeline lets user to deploy/release more often.

Cons

As a market leader, pricing plans can be adjusted to attract more

Pros

The web-based app is fantastic. It has a great UX, its easy to use, and it just looks nice. My favorite feature is the side-by-side comparison for diff comparisons. Whenever you have code with particularly long lines, the traditional word wrap comparison becomes virtually unusable. But Bitbucket has a really nice side-by-side comparison that allows you to scroll horizontally. It is indispensable. It also integrates with Jira really nicely. Whenever you name a branch after a Jira issue, you get a really handly link in Bitbucket that will display the Jira issue card in modal.
Lastly, Bitbucket has better prices for private repos (especially for smaller teams).

Cons

Not a strong mobile presence (albeit, there are few cases where you really need to be able to interact with yoru code repos from a mobile device, but it does come up from time to time)

Pros

I have to say that I've been using Bitbucket for over 5 years now. It's robust, it works and you can feel safe that your code will be secure in case anything happens. It has integration with JIRA which is a MUST and they've recently added board integrations with Trello.

You can also automate your builds with Azure or other Web Services platforms so once you merge your branches, its compiled and published into your service of choice. It has code search and really good pull request management. Wish it had an on-line conflict editor, but regardless Bitbucket is amazing. The free tier gives you 5 private repo's but the paid tier it's unlimited and cheap!

Cons

They should honestly compete head to head with Github and make their free tier also have unlimited repositories. For the price, just go with Github, if you're with a company, I believe Bitbucket is a better deal, more if your company utilizes JIRA.

I've used it over 5 years and the site has been re-designed like 3 times and some of the times It's feel buggy, incomplete or unresponsive/sluggish. When dealing with huge pull requests, the site can basically hang for minutes and recently the site's been having a lot of connectivity issues. They just seem complacent. They're not bad, but don't seem to be bothering much. Also for god sakes, add a Dark mode to your client Source Tree.