Twilio

Twilio is a cloud communication company that enables users to use standard web languages to build a variety of telephony apps supporting voice, VoIP, IP to traditional telcos and SMS apps. Developers can embed voice, video, messaging and authentication into their apps using the Twilio platform.

GitHub

A popular online software development tracking and version control repository, it is particularly popular with open source projects. It allows for full project management, including version control and splits/forks management.

ServiceNow

ServiceNow specializes in IT services management (ITSM), IT operations management (ITOM) and IT business management (ITBM). It offers real-time communication, collaboration and resource sharing covering IT, human resources, security, customer service, software development, facilities, field service, marketing, finance and legal enterprise needs.

Oracle

Another software giant that got SaaS religion, it has moved all of its line of business on-premises apps to the cloud, including ERP, CRM, SCM, HR and payroll. The company also acquired NetSuite, which sells CRM to SMBs not normally served by Oracle and Salesforce.

Google G Suite

Mostly a collection of the individual services Google already offers, like Gmail, storage and calendar, but with added features like custom email and 24/7 support, and it comes at a subscription price over the free basic services offered.

Adobe Creative Cloud

Another reinvention, Adobe was the king of desktop creativity software and has now pivoted to make Photoshop and other audio and video editing tools available via an annual subscription. The Creative Suite offers graphic design, video editing, Web development, and photography editing.

Microsoft

One of the reinventors, the company has moved its desktop productivity suite Office to the cloud and now Office 365 outsells the packaged, client version. It also offers Dynamics CRM, SharePoint collaboration and even SQL Server databases on demand.