Free management and monitoring tools software for linux

Nelisys project is Open Source Web-based Management System, to manage and monitor system and network including Router, Switch, Wi-Fi Access Point, Server, Networking services, etc.

There are performance and fault management function.

Andutteye Software Suite is a systems management tool. Andutteye Software Suite has a modular design and every module targets different tasks of systems management.
Andutteye Software Suite will let you manage all aspects of the IT infrastructure, helping to ensure availability, monitor, tune, and optimize performance.
Andutteye Software Suite will make it easier to support and maintain your entire enterprise as a single entity from a central point of operation.
The webinterface has oustanding features like:
- css stylesheet and theme support
- Language support
- Support and complete integration for monitoring, management and change module
- Role based access control to aes objects
- Centralized configuration administration for monitoring and management
- Tweak and present aes gathered data with graphs or reports
- Rss syndication support
Enhancements:
- Changed program headers, and a fix for a bug with validating RPM versions and releases in the repository.

GNU Hosting Helper is a web hosting management package. It is distributed under the GNU GPL (General Public License) Agreement.
This package provides tools to manage many of the aspects of a hosting environment.
GNU Hosting Helper also provides a client utility to reduce the need for staff to perform tasks that a client needs such as managing email accounts.
Main features:
Administrative Features
The features provided through the administrative interface include (but not limited to):
- Server Tasks
- Security Management
- Server Monitor
- Ticket Center
- News Management
- Knowledge Base
- Fraudscreen
- Domain Management
- User Management
- Billing/Accounting
- Account Information Tools
- Miscellaneous Functions
- Package Management
- Manage Hosting Servers
- Manage Client Interfaces
- Manage Mail Servers
- Manage Name Servers
- Manage Signup Servers
- Manage Server Pools
- Manage Administrators
- Manage Admin Daemon
- System Config
Client Features
The features provided thru the client interface include (but not limited to):
- Account Quickview
- Account Resources
- System Information
- Email Functions
- Virtual FTP Management
- Sub Domain Management
- SSL Certificate Management
- Website Management
- Front Page Extensions Management
- Stats and Logs access
- Account Management
- Account Billing
System/Network Support
GNU Hosting Helper currently supports management for the following software:
- Apache 1.3x and 2x
- Sendmail and Postfix
- Most major FPTD software
- BIND 8x and BIND 9x
- MySQL 3x and 4.0.x
Enhancements:
- Fixes an error with MyDNS where straight domains wouldnt resolve.
- Fixes an error with some systems rnd file creation for creating SSL CSR.
- Fixes an error representing bandwidth allotment, usage, and remaining.
- Fixes an error in the init.d file for the admin server daemon.
- Fixes an error with encryption when editing Webmail, signup, mail, and hosting servers.
- Adds SSH port specification and SSH daemon management to all managed servers.

PHP Polar Tools project is a set of PHP classes that can parse and manage the Polar Heart Rate Monitor data.

nexB OpenAssets is a tool for inventorying, managing, and monitoring applications, software, hardware, networks, and generally any IT asset.
It is designed so that system administrators, IT, and finance can determine what they have, how it is configured, what it is used for, and how much it is being used, so that informed decisions can be made.
It complements existing network management software, integrates with a growing number of protocols and tools, and features no-agent discovery and inventory, configuration management including dependencies and correlation, monitoring, and reporting. It makes extensive and innovative use of XML, Xpath, and Xquery.
Main features:
- asset tracking
- asset inventory
- asset auditing

Manage your network with a free Network Monitoring Software application.
Network Management Tool is an organized way to manage your network. 100% web-based network management.
Manage your network devices with ease. 100% Free Network Managment Software! Manage all your network devices, routers, switches, firewalls, hubs, and more.
Enhancements:
- A display bug that occurred when viewing the comments on a device was fixed.