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Free Lock Manager

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FLoM is a free open source distributed lock manager that can be used to synchronize shell commands, scripts and custom developed software.
When used in a shell environment, FLoM manages process synchronization in the same way that "nice" manages process prioritization.
Shell commands, scripts and custom programs can be synchronized inside a single system or in a network of IP connected systems. FLoM supports different types of abstract resources: simple, numeric, set, hierarchical and transactional sequence.
libflom, the library shipped with FLoM, allows you to develop your own application using a simple C, C++, Java, Perl, PHP or Python client API.
SSL/TLS security for network communication, X.509 certificates for peer to peer mutual authentication.

flom Web Site


  • Command, script, custom process, synchronization
  • Rich lock mode semantic
  • Long term abstract resources and future event synchronization
  • Multiple readers unique sequences with transactional and not transactional behavior
  • 0conf: configuration is reduced to the bare minimum ("just work philosophy")
  • API: C, C++, Java, Perl, PHP, Python client library to develop your own program
  • Security: SSL/TLS network communication protection, X.509 peer to peer mutual authentication


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Additional Project Details



Intended Audience

Information Technology, System Administrators, Developers

User Interface

Console/Terminal, Command-line

Programming Language

Python, Perl, C++, C, PHP, Java



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