Answers Corp., a portfolio company of Summit Partners and TA Associates, has acquiredWebcollage, a New York-based provider of online marketing materials management for retailers. No financial terms were disclosed, although various media reports put the deal between $30 million and $40 million. Webcollage had raised over $56 million in VC funding from Sierra Ventures, Cedar Ventures, Greylock Partners Israel and Gilde Investment Management. www.webcollage.com

Greenbriar Equity Group has acquired Transplace, a Fisco, Texas–based provider of transportation management services and logistics technology, from CI Capital Partners. No financial terms were disclosed. www.transplace.com

Propel Equity Partners has acquired ALEX, a maker of children’s creative products. It will be merged with existing Propel portfolio company POOF-Slinky Inc. www.poof-slinky.com

Warburg Pincus is leading a $200 million investment into the retail unit of listed Vietnamese shopping mall operator Vingroup Joint Stock Co., in exchange for a 20% ownership stake.www.warburgpincus.com