What users are saying about

Apache Subversion

44 Ratings
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Score 7.7 out of 101

IBM Rational ClearCase

20 Ratings
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Score 7.4 out of 101

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Likelihood to Recommend

Apache Subversion

I'd recommend Subversion for almost any software development effort. It is less appropriate for any project with widely geographically distributed developers. For VERY elaborate projects, a higher end commercial tool might be warranted.
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IBM Rational ClearCase

IBM Rational ClearCase might be better suited for a smaller / simpler code base. Larger code bases really slow it down... but then again there are better alternatives out there for source control
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Pros

  • Version control - it's what it's designed for.
  • Modifiable - It only takes a little bit of knowledge of a scripting language (I used Windows BAT files calling Perl scripts) to extend capabilities, like the aforementioned integration with Redmine.
  • Back end administration- It's a breeze. There's very little work involved in terms of administering it once you've got it installed on a server, and even setting that up isn't bad.
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  • Simple user interface.
  • When it works, it works.
  • Integrates well with Microsoft Visual Studios.
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Cons

  • Distributed development - I've never worked in an environment where distributed development (developers widely scattered geographically) was a factor, but that's why git exists.
  • Merging - Merging of code from one branch to another can be painful, especially if it's not done frequently. (On the other hand, doing merges is one of the reasons I get a nice salary, so I can't complain too much!)
  • Acceptance - Let's face it, git is what "all the cool kids are using." If you've got a bunch of developers fresh out of school, they'll probably know git and not Subversion.
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  • Extremely buggy.
  • Sometimes the repository gets locked for no reason.
  • Slow.
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Likelihood to Renew

Apache Subversion3.1
Based on 2 answers
While there are interesting alternatives, such a GIT, Subversion has been a breath of fresh air compared to its predecessors like CVS or Microsoft Source Safe (now called Team Foundation Server). Its ease of use and high adoption rate is going to keep me using this product for years to come.
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Alternatives Considered

I find Perforce to be a little more cumbersome to use than Subversion. And it is NOT free or open source.
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GIT Stash is superior to IBM Rational ClearCase in many ways. Bundled with SourceTree, the UI is far more modernized and updated than IBM Rational ClearCase. Being able to visually see the individual branches that are created within the repository is much more straightforward than the versioning method of ClearCase. GIT also seems to be a lot faster when it comes to checking in/out code and creating the repository.
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Return on Investment

  • Subversion helps us feel secure in maintaining access to all of our product code, both current and historical.
  • Being free and open source makes it an even better "investment".
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  • Managed code versioning for many years.
  • Only one person can edit code at a time - slows processing down.
  • IBM is an expensive product to support.
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Pricing Details

Apache Subversion

General
Free Trial
Free/Freemium Version
Premium Consulting/Integration Services
Entry-level set up fee?
No
Additional Pricing Details

IBM Rational ClearCase

General
Free Trial
Free/Freemium Version
Premium Consulting/Integration Services
Entry-level set up fee?
No
Additional Pricing Details