Free information manager software for linux

Font Manager is a font manager for GNOME. Font Manager cannot do any font management tasks yet, but is already useful for picking fonts.
Main features:
- List installed fonts
- Add previews for installed fonts
- Open font properties from context menu
- Set system fonts from the font manager
- Make the font manager installable

Information Resource Manager project the Information Resource Manager, is a powerful web-based asset tracking and trouble ticket system built for IT departments and HelpDesks.
It keeps detailed information about each computer, as well as providing a trouble ticket system, an FAQ system, and a Knowledgebase, which are all interweaved into a seamless web application.
Main features:
- Detailed tracking of computers, searchable by all fields
- Software tracking (installed copies, licensing)
- Trouble ticket system ("tracking") with priorities, assign to users, tracking history, anonymous web submission, followups
- Scaleable to thousands of records
- SNMP browse support
- Network mapping by network devices and ports/wires
- Full e-mail notification
- Report generation tools
Whats New in 1.6 Beta 2 Development Release:
- Numerous fixes to the tracking system and general bug smashing.

VNC Session Manager provides a disconnected session manager for VNC.

VNC Session Manager adds the necessary glue code between VNCs two execution modes, enabling XDM-based login to disconnected sessions. This gives a Terminal Services-like login for Unix-based VNC servers.

Microsummary Manager provides an easily install, delete and manage your μSummary generators!

This extension provides an easy way to manage currently installed microsummary generators and install any you may have saved locally via the add-ons manager.

Grace project is a system of the Daniel Project that handles the tracking of contributions and donors for a non-profit. As contributions come in for particular funds, the contributions are recorded along with the donors information.
The system also handles the printing of receipts and reports, and facilitates common administrative operations like bank deposits and exporting of data to an accounting package.
Main features:
- Create a deposit and enter contributions into that deposit.
- Multiple line items (recipients) possible for each contribution.
- Streamlined data entry and finalizing of a deposit.
- Create multiple funds to receive contributions.
- Print receipts for donors.
- Print reports for fund owners (or output to PDF).
- Export to external accounting system.
- Notify fund owners by email of contributions.
- Multiple, concurrent users with extensive logging.
- Copy deposits for easy re-entry of repeated sets of contributions.
- Rapid, extensive search for deposits, contributions, and donors.
- GPL-licensed open source software for infinite flexibility to meet your needs.
Enhancements:
- Grace has been renamed to the Grace Contribution Manager (formerly Grace Receipting System).
- A splash screen is displayed on startup.
- New menu icons and a toolbar with shortcuts for frequently used operations.
- Two donors can now be merged into one using Other->Merge Donors...
- Two new reports: Major Donor Report and Donor Name Report.
- Receipts have been overhauled.
- This release runs on Windows.

SiteInvoice project helps you manage your customer invoices in a simple and efficient manner.

Customers receive personalized email notices with invoices attached as PDFs, with reminders sent at 30, 45, and 60 days.

Handles multiple currencies and taxes. Never lose track of money you or your company are owed again.