Blackbaud (Nasdaq: BLKB), a provider of donor management software for nonprofit organizations, has agreed to acquire rival Convio (Nasdaq: CNVO) for around $275 million, or $16 per share (49% premium to Friday’s closing price). www.blackbaud.com

BMC Software (Nasdaq: MBC) has acquired I/O Concepts, a maker of mainframe console security and automation solutions. No financial terms were disclosed. I/O Concepts shareholders included Marlin Equity and InNOVAcorp.

OMERS Private Equity has sold Cari-All Group Inc., a Quebec–based maker of shopping carts, shelving and backroom equipment to retailers, to German cart manufacturer Wanzl Metallwarenfabrik. No financial terms were disclosed. Other sellers included Caisse de dépôt et placement du Québec. Harris Williams & Co. managed the sale process. www.omerspe.com

Sun Capital Partners and EG Capital Group have agreed to sell Del Monte Canada to ConAgra Foods(NYSE: CAG). No financial terms were disclosed. Del Monte Canada was formed in January 2006, when Sun Capital led the acquisition of non-core food businesses operated by Kraft that previously were known as CanGro Foods. www.suncappart.com

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