Comparison of version-control software

Columns: Software | History | Notable users
Code Co-op | The first distributed VCS , demoed in 1997 , released soon after | CVS | First publicly released July 3 , 1986 ; based on RCS | NetBSD , OpenBSD | CVSNT | First publicly released 1998 ; based on CVS . Started by CVS developers with the goal adding support for a wider range of development methods and processes | Primarily professionals ( not hobbyists ) , e.g . : AnandTech , Wachovia , Wells Fargo , Goldman Sachs | darcs | First announced on April 9 , 2003 | Mnet , xmonad , Projects Using Darcs | Dimensions CM | Developed by SQL Software under the name PCMS Dimensions during the late 1980s ( PCMS standing for Product Configuration Management ) . Through number of company acquisitions the product was released under names PVCS Dimensions ( 1990s , Intersolv ) , Dimensions ( early 2000s , Merant ) , ChangeMan Dimensions ( 2004 , Serena Software ) and finally Dimensions CM ( since 2007 , Serena Software ) | Lockheed Martin , European Space Agency , Fujitsu Business Communication Systems and many companies worldwide | Fossil | Fossil and SQLite have used Fossil since 21 July 2007 | SQLite , Tcl/Tk Project | Git | Started by Linus Torvalds in April 2005 , following the BitKeeper controversy | Linux kernel , Android , Bugzilla , DragonFly BSD , GNOME , GNU Emacs , GRUB2 , KDE , MySQL , Perl 5 , PostgreSQL , X.Org , Cairo , Qt Development Frameworks , Samba , OpenEmbedded , Ruby , Ruby on Rails , Wine , Fluxbox , Openbox , Compiz Fusion , XCB , ELinks , XMMS2 , e2fsprogs , GNU Core Utilities , DokuWiki , Drupal , LibreOffice , MediaWiki , Mono , ASP.NET MVC , ADO.NET Entity Framework , NuGet , jQuery and many of its plugins , OpenCV , Wireshark , Django , many companies like Ericsson , Microsoft , Huawei , Apple , Amazon , LG

Example questions:
Who bought-out the software company who 's version management software was used by Lockheed Martin and Verizon Wireless ? | What hash technology does the software first released in April 2003 use ? | Where is the company who 's software the Linux Kernel used from 2002 to 2005 based ? | What was the buyout price for the company responsible for ClearCase ? | Who currently maintains the software version control technology originally developed by Linus Torvalds ?

Answers:
Micro Focus | SHA-1 | Los Gatos , California | US $ 476 million | Junio Hamano