Free subscribe software for linux

MUSCLE is a somewhat scalable, robust, cross-platform client-server messaging system for dynamic distributed applications that runs under any POSIX-compliant operating system.
MUSCLE has been developed, used, and refined as the networking component of BeShare, CueStation, CueConsole, and various other audio control applications at Level Control Systems for over four years.
Main features:
- Use BMessage-like muscle::Messages under any operating system.
- Send flattened muscle::Messages from one computer to another over TCP streams, eliminating unnecessary compatibility and protocol-versioning hassles.
- Run a "muscled server" on a central machine, and write (or download) client programs to log in to the server and communicate through it. Once logged in, client programs can discover who else is logged in, send muscle::Messages to other clients, and store muscle::Messages in the servers RAM for other clients to download later. Clients can also "subscribe" to selected data on the server, and be automatically notified whenever it changes. Unicast-style, multicast-style, and broadcast-style Message routing are all supported via an intelligent hierarchical pattern-matching routing mechanism. Writing multiplayer games, IRC style chat applications, SETI style distributed calculation apps, or any other type of distributed software is made easy because MUSCLE handles all the dirty work for you!
- Customize the included "muscled server" by defining your own session logic or message-streaming protocol. (Note that this is only necessary for certain specialized applications--the standard server provides sufficient functionality for most things)
- Write your client code in C++, Java, or Python. Single-threaded and multi-threaded messaging APIs are provided for all three languages.
- Or just use the included message, string, dataIO, hashtable, dequeue, string-tokenizer, reference-count, regular expression and pattern matching parser, and object-pool code by themselves, as handy cross-platform utility classes. All source code is included, and you are free to use and abuse it any way you wish.
- See the Beginners Guide for a more detailed description of the system and its capabilites.
Enhancements:
- This release includes various minor bugfixes to the Java and C++ code, as well as a few minor optimizations.

IPC::PubSub is Perl module for Interprocess Publish/Subscribe channels.

SYNOPSIS

# A new message bus with the DBM::Deep backend
# (Other possible backends include Memcached and PlainHash)
my $bus = IPC::PubSub->new(DBM_Deep => /tmp/pubsub.db);

# A channel is any arbitrary string
my $channel = #perl6;

# Register a new publisher (you can publish to multiple channels)
my $pub = $bus->new_publisher("#perl6", "#moose");

# Publish a message (may be a complex object) to those channels
$pub->msg("This is a message");

# Register a new subscriber (you can subscribe to multiple channels)
my $sub = $bus->new_subscriber("#moose");

# Publish an object to channels
$pub->msg("This is another message");

# Set all subsequent messages from this publisher to expire in 30 seconds
$pub->expiry(30);
$pub->msg("This message will go away in 30 seconds");

# Simple get: Returns the messages sent since the previous get,
# but only for the first channel.
my @msgs = $sub->get;

# Simple get, with an explicit channel key (must be among the ones
# it initially subscribed to)
my @moose_msgs = $sub->get("#moose");

# Complex get: Returns a hash reference from channels to array
# references of [timestamp, message].
my $hash_ref = $sub->get_all;

# Changing the list of channels we subscribe to
$sub->subscribe(some-other-channel);
$sub->unsubscribe(some-other-channel);

# Changing the list of channels we publish to
$pub->publish(some-other-channel);
$pub->unpublish(some-other-channel);

# Listing and checking if we are in a channel
my @sub_channels = $sub->channels;
my @pub_channels = $pub->channels;
print "Sub is in #moose" if $sub->channels->{#moose};
print "Pub is in #moose" if $pub->channels->{#moose};

# Raw cache manipulation APIs (not advised; use ->modify instead)
$bus->lock(channel);
$bus->unlock(channel);
my @timed_msgs = $bus->fetch(key1, key2, key3);
$bus->store(key, value, time, 30);

# Atomic updating of cache content; $_ is stored back on the
# end of the callback.
my $rv = $bus->modify(key => sub { delete $_->{foo} });

# Shorthand for $bus->modify(key => sub { $_ = val });
$bus->modify(key => val);

# Shorthand for $bus->modify(key => sub { $_ });
$bus->modify(key);

This module provides a simple API for publishing messages to channels and for subscribing to them.

When a message is published on a channel, all subscribers currently in that channel will get it on their next get or get_all call.

Currently, it offers three backends: DBM_Deep for on-disk storage, Memcached for possibly multi-host storage, and PlainHash for single-process storage.

Please see the tests in t/ for this distribution, as well as "SYNOPSIS" above, for some usage examples; detailed documentation is not yet available.

Grisbi is a personnal accounting application running under GNU/Linux.

Our aim is to provide you with the most simple and intuitive software for basic use, and still very powerful if you spend a little time on the setup.

Grisbi can manage multiple accounts, currencies and users. It manages third party, expenditure and receipt categories, as well as budgetary lines, financial years, and other informations that makes it quite adapted for associations (except those that require double entry accounting). The exhaustive list of Grisbis functionalities can be found in the Users guide, paragraph 1.2.

The complete manual under FDL license is avaliable on line (Documentation in the main menu). The version coming with the software is not illustrated, but can be replaced by the illustrated version any time, being availiable for download on this site. The manual will be soon completed with a Guide concerning accounting for associations.

If you want to keep updated with Grisbi releases, you may subscribe to the information mailing list (see Contacts) and if you like to live dangerously you even can download the unstable sources from CVS and compile them. Information about this is in the Manual paragraph 2.1.11.

Last but not least, Grisbi will be soon internationalised. All contributors are welcome.

Boost Channel is a C++ template framework for distributed message passing and event dispatching. Its major components (message IDs, routing algorithms...) are highly configurable as template parameters.
As a namespace shared by peer threads, channels support publish/subscribe scope control, message filtering, and translation.
Enhancements:
- Jamfile.v2 was added for building the channel library and examples (the current boost CVS build system was changed so Jamfile.v2 is required).
- However, there are issues with building samples using Jamfile.v2 with WindowsXP and VC++.
- Windows users should use the existing Jamfile (v1).
- This may involve replacing the boost/tools/build/v1 directory with the content from an older boost release or CVS checkout (such as 12/10/2006).

Avis client library is a Java API for clients accessing Elvin event routers, including the open source Avis event router and the commercial Mantara Elvin product.
Avis is an event router service compatible with the commercial Elvin implementation developed by Mantara Software. Avis provides a fast, general-purpose publish/subscribe message bus.
Elvin event routers alllow arbitrary messages, known as notifications, to be exchanged via a publish/subscribe model. Elvin clients subscribe to messages published by other clients using expressions that match messages by their content.
The content-based routing approach used in Elvin routers differs from many other message bus systems that operate by selecting messages published on pre-defined channels, and has the advantage of promoting a much higher level of decoupling between producers and consumers of events.
The name "Avis" derives from the French word avis, meaning advice or notification.
Enhancements:
- This release marks a stable baseline for the Java client API.
- The core set of features required for an Elvin client library are now implemented and stable, including subscription, notification, security, close event notification, liveness checking, and router connection option support.

TurboCall is an extension which adds a phone call function to your browser.
Select any phone number on any web page, or click on a phone number in your contact list in the integrated panel, and you will receive an incoming call from the desired destination number within seconds.
Main features:
- No obligation to subscribe after trial period
- Use your regular landline or cell phone
- Low international rates!
- Accessible worldwide
- Store your personal contact list
- No connection fee, no maintenance fee!

Commitfilter program can be used by projects hosting source repositories and having a commit notification mailing list.
The service allows users to subscribe to only the relevant areas of the repository for which they want to get notifications.
Commitfilter has been in use for KDE for more than 2 years. It currently supports Subversion, but CVS support will be restored.
Enhancements:
- A Web frontend is now included, which is easily changed to integrate well with existing Web pages.
- The PHP code doesnt require register-globals anymore, and more configuration options are now available for better multi-project support.