Observium

• Free
• Best for small non-critical deployments, home use, evaluation or lab environments.
• Distributed via 6-monthly .tar.gz releases under the QPL Open Source license.
• The Community Edition receives updates and new features on a 12 to 6-monthly release cycle.

Features

• Six-monthly releases
• Full autodiscovery of supported devices and metrics
• Network mapping through discovery protocols
• Automatic recognition of hundreds of devices

• Best for service provides and enterprise deployments and can be supplied with support and professional services options.
• Distributed via an SVN-based release mechanism, providing rapid access to security and bug fixes, and new features.
• The Professional Edition recieves daily bug fixes, security updates and new features.
• Features:
  • Realtime software updates and fixes
  • Full autodiscovery of supported devices and metrics
  • Network mapping through discovery protocols
  • Automatic recognition of hundreds of devices
  • Rule-based automatic grouping
  • Threshold and State Alerting system
  • Traffic accounting system
  • IP SLA, Pseudowire and Class-based QOS metrics
  • Enhanced and additional device and MIB support
  • RESTful API

Support Options

(Support subscriptions require and can be purchased alongside an Observium Professional subscription)

• Support Subscription (2-hour minimum): £200 ($266)
• Support Subscription (10 hours) : £900 ($1196)
• Additional Support per hour: £100 ($133)
• Additional Support 10-hour block: £900 ($1196)

2. Service Options

• Feature Development per day: £1000 ($1328)
• Basic Installation (2 hour minimum) : £200 ($266)
• Installation additional hour: £100 ($133)

Contact the vendor to get the detailed pricing information.