In the last 18 months, 13 cloud computing companies have gone public and investors have been eating them up.

A few examples include WorkDay, ServiceNow, Rally Software, and Marketo.

Bessemer Venture Partners has created a brand new index that tracks the top 30 public cloud software-as-a-service (SaaS) companies.

“With 30 large public companies collectively representing more than $ 100 billion in market capitalization and $ 12.5 billion in estimated 2013 revenue, the cloud computing industry has officially come of age,” explains the keepers of Bessemer’s new index Byron Deeter and Kristina Shen in a blog post.

Here’s another shocker:

No. 15 Jive Software: Worth $ 1.2 billion

Jive Software
Ticker:  JIVE
Stock price: $ 17.39
Market cap:  $ 1.159 billion

Jive offers collaboration software that lets enterprises communicate with employees, customers, and partners.

No. 14 Demandware: Worth $ 1.4 billion

Demandware
Ticker: DWRE
Stock price: $ 45.46
Market cap: $ 1.371 billion

Demandware sells a cloud-based ecommerce platform.

No 13 Fleetmatics Group: Worth $ 1.4 billion

Fleetmatics Group
Ticker: FLTX
Stock price: $ 39.21
Market cap: $ 1.397 billion

Fleetmatics offers a GPS fleet tracking service for companies that own multiple vehicles.

See the rest of the story at Business Insider