Blackbaud, Inc., the leading provider of software and related services designed specifically for nonprofit organizations, announced yesterday that it is acquiring Kintera, Inc., a pioneer and leading provider of a Software as a Service solution to the nonprofit and government sectors.

The news is attracting concern among some nonprofit leaders.

The anonymous fund raiser who writes the blog Don’t Tell the Donor writes that while Blackbaud’s “press release seems almost giddy, I’m not so sure nonprofits will be thrilled that their viable options for major providers continues to shrink.”