Salt Lake City-based Bungee Labs, which is developing web application development platforms, said today that it has opened up its services for a public beta. The firm, which creates tools that allow users to create Web 2.0, enterprise applications, said that all developers can now use the firm's services. The company had previously been running an invite-only beta of its services. Bungee's products are offered as software-as-a-service; developers develop their applications on the Bungee platform and pay a monthly usage fee for access to those applications. The firm is venture backed by North Bridge Venture Partners, Venrock Associates, and Wasatch Venture Fund.