Cornerstone allows you to take control of Subversion with a client application that was specifically designed for Mac users. Cornerstone integrates all of the features you need to interact with your repository and does so in an elegant and easy-to-use fashion.

Whether you're new to versioning or a Subversion expert, Cornerstone will help streamline your workflow and make version control more transparent.

• Combines the elegance of the Mac with the power of Subversion.
• Perfect companion to Xcode, BBEdit, TextMate, Coda, etc.
• Use Subversion without having to install it on 10.4 Tiger.
• All-in-one UI mode optimized for use on laptops and other small displays.
• Multiple-window UI mode optimized for use on desktop systems with large (or even multiple) displays.
• And much much more.

The trial version will expire after 14 days. A single-user license costs $59.99 and may be used by a single individual on up to 2 computers.

Version 4.1 (4.0):

Note: The downloadable demo is version 4.0; the version available for purchase on the Mac App Store is version 4.1.

• Shelving - Allows users to temporarily "shelve" (set aside) in-process changes and revert back to the working tree - to quickly fix a bug on production, for example. Once done, users can simply retrieve their shelved changes and continue where they left off.
• Checkpointing - Allows users to create a "snapshot" or copy of their repository at a specific point in time. If users experience a critical issue down the road, they can restore their project back to any checkpoint that they previously created. It’s essentially an undo button for major problems.
• Subversion 1.10 - Cornerstone will now support all versions of Subversion above 1.7
• Set Environment Variables With SSH Tunnels - A new SendEnv field allows users to set any environment variable using the form variable=value
• Integration with Assembla SVN+SSH - Cornerstone is now compatible with Assembla SVN repositories through SSH connections.
• Performance Improvements - Numerous code optimizations speed up overall application performance, especially when updating code from the central repository to Cornerstone.

Note: Full list of changes is available here

Cornerstone was acquired by Assembla. Versions 1, 2, and 3 were reasonably priced and licensed per user. Version 4, under Assembla has had its price increase dramatically AND switch to an ANNUAL license! Plus they appear to be licensing it PER DEVICE and no longer per user.

Assmebla sent me an email saying my key was deactivated because it was installed more than the "normal rate" (without explaining what that is). And then saying if I wanted to use it on more than one device I'd have to pay per device for extra licenses. Problem is, my receipt clearly indicates my licenses were purchased per USER. When I was recommending the software for my employer a 2 or 3 years back I reached out and confirmed it was per user, as several of us had more than one machine, and Zennaware confirmed the software is licensed to the user, not the machine, and that more than one machine was permitted provided it was all for the same user.

Assembla seems to be making a huge money grab, and they don't care if they alienate their users or not. It's a pity really, because Cornerstone has been a very nice Mac GUI for SVN (I'd otherwise give it 4.5 stars), but what Assembla is doing is not the way to keep a loyal user base. Sure they might make some short term revenue, but I can't see the majority of their users keeping it at the higher rate and these kinds of tactics. I for one will not be upgrading. Though now it seems I might no longer be able to install it again if I change machines, in essence they've stolen something I've purchased.

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