Salesforce makes 3rd acquisition in 2 months — productivity app developer Manymoon

Salesforce announced today that it has picked up Manymoon, a company that adds additional productivity and collaboration tools to web apps like Gmail and Google Apps, as part of a two-month-long spending spree that has now included three acquisitions.

Manymoon adds some additional functionality to Google Apps, such as the ability to create projects and alerts in Gmail based on information received in an email. It also has similar apps for the Google Chrome Web Store and LinkedIn. Manymoon also includes some tools to share Google Docs with others and browse large amounts of documents. The service is designed to help employees keep track of their work life and tasks and to collaborate with co-workers.

The company’s services won’t be disrupted, and the Manymoon team is going to continue adding features to it as they normally would, according to a post on Manymoon’s site, which gives some additional details about the announcement. That’s a contrast to Salesforce’s last acquisition, Etacts, which ended up shutting down its service just after it was acquired.

The acquisition is part of Salesforce’s latest attempt to branch out from its traditional customer relationship management (CRM) software. The company launched an enterprise-style Facebook service called Chatter.com yesterday. Salesforce also invested $4 million in Seesmic, a client for reading status updates from Facebook, Twitter and other social services. Now Salesforce has a slight reach into another cloud service with Manymoon’s presence on Google Apps. Manymoon didn’t say whether its features would end up on Salesforce’s CRM software — just that it would continue working on its current products.

Salesforce recently dropped $212 million to buy Heroku, which develops and deploys web-based applications that rely on the programming language Ruby on Rails. It made that announcement at Dreamforce in December. Salesforce also acquired email contact manager Etacts for an undisclosed sum shortly after Dreamforce in December.

The financial details of the Manymoon deal weren’t disclosed, but Kara Swisher’s BoomTown blog said the price was somewhere between $25 million and $35 million. Manymoon has raised a small amount of seed funding from Harrison Metal, who was also an investor in Heroku.