'mainstream software' is correct and usable in written English.
You can use it to refer to software that has mass appeal or is widely used in a particular industry. For example, "Microsoft Office is the most popular, mainstream software used in the business world."
Novell announced yesterday that it had agreed to buy SuSE Linux of Germany for $210 million, in a deal that shows mainstream software companies are increasingly betting on the free Linux operating system.
One idea is to run a Hack Day or some form of interactive workshop to see how we can create a framework or language for building digital sustainability thinking in mainstream software development.
It took the mainstream software industry years to understand that rewarding reports of security holes with bounties, rather than letting them be sold on the dark market, is sensible and necessary.
Mainstream software engineering is a starting point for rethinking how we introduce new analytic approaches into the national security workplace.
Agile software development methods have been increasingly adopted worldwide and became one of the mainstream software development approaches.
Conducent has been hinting that a large mainstream software company will shortly adopt the concept in the weeks ahead.
Blogging has transformed journalism, but mainstream blogging software hasn't changed much in the past decade.
By adding mainstream business software, Amazon appears to have expanded its ambitions with an eye toward attracting large businesses.
The reports say that, in addition to undermining all of the mainstream cryptographic software used to protect online commerce, the NSA has been "collaborating with technology companies in the United States and abroad to build entry points into their products".
A much less necessary evil, though, is its creeping into mainstream retail software.
Due to the increased emphasis on responsiveness, event-based design has become mainstream in software development.
