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.