Duetto, a San Francisco-based provider of hotel profit optimization software, has raised $21 million in new VC funding. Accel Partners led the round, and was joined by return backers Duetto investors, including Battery Ventures, Altimeter Capital, Leland Pillsbury and Marc Benioff. www.duetto.com

Busbud, a Canadian maker of a mobile app for booking bus travel, has raised $9 million in Series A funding. Omers Ventures and Revolution Ventures co-led the round, and were joined by return backers iNovia Capital and Real Ventures. www.busbud.com

Zynstra, a UK-based provider of cloud managed server appliances for SMEs, has raised $8.4 million in Series B funding. Octopus Investments led the round, and was joined by individual angels.www.zynstra.com

Spring, a stealthy mobile commerce company co-founded by David Tisch, has $7.5 million in Series A funding. Backers include Thrive Capital, Groupe Arnault and Box Group. www.jellolabs.com

MNectar, a San Francisco-based provider of mobile app virtualization and cloud delivery solutions, has raised $7 million in Series A funding from New Enterprise Associates. www.mnectar.com

Credit Benchmark, a London-based provider of credit risk data and analytics, has raised $7 million in Series A funding led by Index Ventures. www.creditbenchmark.org

RackWare, a Santa Clara, Calif.-based provider of enterprise cloud management software, has raised $2.3 million in new VC funding from return backers Kickstart Seed Fund and Osage Venture Partners. www.rackwareinc.com

Private Equity Deals

Blackboard Inc., a portfolio company of Providence Equity Partners, has acquired Perceptis, a Greenville, S.C.–based provider of a student help desk and support services. No financial terms were disclosed. Sellers include Frontier Capital and Vencore Capital. www.blackboard.com

The Concord Music Group, a Cleveland-based portfolio company of Wood Creek Capital Management, has acquired the catalog of 1950s and 1960s blues and soul label Vee-Jay Records. No financial terms were disclosed. www.concordmusicgroup.com

Eberhart Capital has acquired Contractor Sales & Service Inc., a Des Moines, Iowa-based aerial equipment rental company. No financial terms were disclosed. www.eberhartcapital.com

Golden Gate Capital has agreed to acquire a majority stake in Green Street, a Newport Beach, Calif.–based provider of research, analytics and advisory services to the commercial real estate industry. No financial terms were disclosed. www.greenstreetadvisors.com

KKR and Riverstone Holdings have agreed to merge the assets of KKR Natural Resources Funds with the assets of Riverstone portfolio company Legend Production Holdings, in order to form a new Fort Worth, Texas-based oil and gas company called Trinity River Energy. No financial terms were disclosed. www.kkr.com

Pain Doctor, a Scottsdale, Ariz.-based pain management company, has secured an undisclosed amount of growth equity funding from Catterton Partners. www.paindoctor.com

RFE Investment Partners has acquired Wind River Environmental LLC, a Hudson, Mass.-based waste services company, from Housatonic Partners. No financial terms were disclosed. Headwaters managed the process. www.wrenvironmental.com

Vista Equity Partners has agreed to acquire Social Solutions, a Baltimore–based provider of SaaS performance management software for human and social services. www.socialsolutions.com

IPOs

Sage Therapeutics, a Cambridge, Mass.-based developer of drugs to treat orphan and specialty CNS disorders, has set its IPO terms to 4 million shares being offered at between $14 and $16 per share. It would have an initial market cap of approximately $359 million, were it to price in the middle of its range. The company plans to trade on the Nasdaq under ticker symbol SAGE, with J.P. Morgan and Goldman Sachs serving as co-lead underwriters. Shareholders in the pre-revenue company include Third Rock Ventures (58.5% pre-IPO stake), Arch Venture Partners (21.3%), Fidelity Investments (5.6%), OrbiMed Advisors, EcoR1 Capital Management and Foresite CapitalManagement.www.sagerx.com

Spie SA, a French energy and communications services company, is planning a 500 million IPO in Paris by year-end. Company sponsors include Ardian, Caisse de dépôt et placement du Québec and Clayton Dubilier & Rice. www.spie.com

TerraForm Power Inc., a Beltsville, Md.-based company formed to own and operate contracted cleanpower generation assets acquired from SunEdison (NYSE: SUNE) and unaffiliated third parties, has set its IPO terms to 20.07 million shares being offered at between $19 and $21 per share. It plans to trade on the Nasdaq under ticker symbol TERP, with Goldman Sachs serving as lead underwriter.www.sunedison.com

Yodle Inc., a New York-based provider of cloud-based marketing automation solutions for local businesses, has filed for a $75 million IPO. Credit Suisse is listed as left lead underwriter. The company reports a $10.4 million net loss on $162 million in revenue for 2013, compared to a $5.4 million net loss on $132 million in revenue for 2012.  The company has raised around $40 million in VC funding, from firms like Bessemer Venture Partners (29.7% pre-IPO stake), Draper Fisher Jurvetson (24.4%), Jafco Ventures (8.7%) and MentorTech Ventures. www.yodle.com

M&A

London Broadcasting Co, a Dallas-based portfolio company of SunTx Capital Partners, has completed its previously-announced sale of six Texas-based television stations to Gannett Co. Inc.(NYSE: GCI) for $215 million in cash. www.LondonBroadcastingCompany.com

ATS Automation Tooling Systems Inc. (TSX:ATA) has agreed to acquire M+W Process Automation GmbH and ProFocus LLC, German providers of automation services and solutions focused on the control, performance monitoring and measurement of critical production processes, for approximately €248 million. The seller was Stumpf AG.  www.atsautomation.com

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