If you’re a novelist, screenwriter or blogger — and you own a Mac — then you’ve probably heard of Mariner Software. The Minneapolis company makes desktop software for what its president, Michael Wray, calls the “creativity market.” Last year, sales at the 11-employee company grew by 60 percent, much of that driven by writers and other creative types who wanted an easy way to perfect their crafts. The company has been profitable for the last eight quarters in a row, Wray told MacNewsWorld.