Free subscribe software for linux

Requirements:

• Python

Zim is a WYSIWYG text editor written in Gtk2-Perl. Zim aims at bringing the concept of a wiki to your desktop. For example every page is saved as a text file with wiki markup. Pages can contain links to other pages, and are saved automatically.
Creating a new page is as easy as linking to a non-existing page. This tool is intended to keep track of TODO lists or serve as a personal scratch book.
Development on Zim started september 2005. This means there is no stable version yet. We are currently in beta testing. New releases will be announced on freshmeat. Please subscribe there to stay in touch.
Zim handles several types of markup, like headings, bullet lists and of course bold, italic and highlighted. This markup is saved as wiki text so you can easily edit it with other editors. Because of the autosave feature you can switch between pages and follow links while editing without worries.
Enhancements:
- Among other fixes, a bug where zim would hang on "new link" on some platforms was fixed, as well as a bug that could corrupt links on "update link".
- New features are the option to control the look of a new page through a template and to control the rendering of pages through a simple kind of stylesheet.
- Support for slow filesystems was added.
- Other improvements include better handling of formatting in the undo stack and the addition of a "document root" setting to the repository.

Avis is an event router service compatible with the commercial Elvin implementation developed by Mantara Software. The project provides a general-purpose, scalable publish/subscribe message bus using content-based subscriptions.
Elvin is a flexible event router that allows arbitrary messages (a.k.a. notifications) to be exchanged via a publish/subscribe model. Elvin clients subscribe to messages using expressions that match messages by their content, an approach that differs from most other message bus systems that operate by selecting messages published on pre-defined channels. Elvin routers can also be federated to construct high-efficiency, wide-area event networks.
The name "Avis" derives from the French word avis, meaning advice or notification.
Applications:
Current uses for Elvin include providing the message bus for instant messaging and virtual presence, device coordination for smart meeting rooms and distributed speech transcription for meetings. It has also been used extensively by Mantara for high-volume financial transaction routing.
Elvin has picked up in so many applications because of its lightweight approach and flexibility. See the examples page to see how it can be employed.
Enhancements:
- This release corrects a number of errors in the router and brings the subscription language parser in closer compliance with the specification.
- All users are advised to upgrade.

ATutor is an Open Source Web-based Learning Content Management System (LCMS) designed with accessibility and adaptability in mind.
Administrators can install or update ATutor in minutes, and develop custom templates to give ATutor a new look. Educators can quickly assemble, package, and redistribute Web-based instructional content, easily retrieve and import prepackaged content, and conduct their courses online. Students learn in an adaptive learning environment.
ATutor is the first fully inclusive LCMS, complying with the W3C WCAG 1.0 accessibility specifications at the AA+ level, allowing access to all potential learners, instructors, and administrators, including those with disabilities who may be accessing the system using assistive technologies. Conformance with W3C XHTML 1.0 specifications ensures that ATutor is presented consistently in any standards compliant technology.
ATutor has also adopted the IMS/SCORM Content Packaging specifications, allowing content developers to create reusable content that can be swapped between different e-learning systems. Content created in other IMS or SCORM comformant systems can be imported into ATutor, and visa versa. ATutor also includes a SCORM 1.2 Runtime Environment (LMS RTE3) for playing and managing SCORM based Sharable Content Objects (SCOs).
ATutors base in Open Source technology makes it a cost effective tool for both small and large organizations presenting their instructional materials on the Web, or delivering fully independent online courses. Comprehensive help is available through the ATutor HowTo documentation, through a number of support services, or through the public forums, and full language support is available through the ATutor Translation Site.
ATutor 1.5.4 Demo:
http://www.atutor.ca/atutor/demo.php
Main features:
- Forum Upgrades: Shared forums for communication across courses. Create communities around groups of course forums, or around an entire ATutor course server. Alumi participation in course forums. Subscribe to shared forums or course forums, or subscribe to specific topic threads to receive messages by email. Quickly access current forum messages through the Forum Posts menu module.
- File Manager Upgrades: Create new text and html files, move individual files or batches of files, and use the file manager while editing ATutor content pages. Use the Insert function to create links to files within course content pages and test questions.
- Enrollment Manager Overhaul: Create, import, and export course enrollment lists, and manage enrolled students or alumni. New tabbed display for managing student information, managing course lists, managing roles and privileges, as well as creating and managing groups.
- Language Overhaul: Language management has been completely re-designed. Translate, import, and export language from within an ATutor installation. Support for the UTF-8 character set. ATutor is avalable in more than 30 languages.
- Backup Manager: Administrator and Instructor Backup Manager. Create master copies of courses. Manage multiple backups per course and restore only material you specify into existing and newly created courses.
- Question Bank: Create tests by adding questions to, and retrieving questions from, a test item respository.
- Test/Survey Manager Upgrade: New ability to create image based test items, arrange multiple choice questions vertically or horizontally, assign tests to a class, to groups, or to individual students.
- Theme Manager: Easily copy, import, and export ATutor themes.
- RSS Feeds: Syndicate course announcements with RSS 1.0, or RSS 2.0 feeds, to display them on remote Web sites.
- New Feedback and Error Handling: Redesigned, modular, user feedback system. Improved logging, tracking, and presentation of system errors for debugging and troubleshooting ATutor installations.
- Embed ACollab: Embed ACollab into ATutor, or open it in a new window to participate in group activities.
- System Announcements: Administrators can send email announcements to all instructors and/or students registered on an ATutor system.
- Easy Enrollment: Students can now enroll in courses through the Browse Courses screen.