Here are the trusted vendors in CIS 4.0 RC:
2BrightSparks Pte Ltd 3CX Ltd A. & M. Neuber Software Abelssoft GmbH ACD Systems International Inc ACD Systems Ltd AceBIT GmbH Acelogix Software Acoustica, Inc Acresso Software Inc. Acro Software Inc. Acronis, Inc Adobe Systems Incorporated Adobe Systems, Incorporated Agnitum Ltd. Aignesberger Software GmbH AKVIS LLC Alcohol Soft Alexander Avdonin ALWIL Software America Online, Inc. Answers Corporation Antony Lewis AOL LLC Apple Computer, Inc Apple Computer, Inc. Apple Inc. Arainia Solutions, LLC ArcSoft, Inc. ashampoo GmbH & Co. KG ATI Technologies ULC Auslogics Software Autodesk, Inc AVG Exploit Prevention Labs, Inc. AVG Technologies Avira GmbH Axel Rietschin AXIALIS SA Babylon Ltd. Beepa Pty Ltd Beijing Rising Information Technology Corporation Limited BEIJING RISING SCIENCE AND TECHNOLOGY CORPORATION LIMITED BillP Studios BinaryThing.com Pty Ltd Bitberry Software BITDEFENDER LLC BitTorrent Inc Bluebeam Software, Inc. Blumentals Software Bolide Software Bravestorm, LLC BulletProof Software LLC Business Management Systems, Inc. C. Ghisler & Co. CA CACE TECHNOLOGIES, LLC CadabraSoftware Camshare L C Canon Inc. Catalyst Development Corporation Cerberus, LLC Cerulean Studios, LLC cFos Software GmbH ChatStat Technologies, Inc Check Point Software Technologies Ltd. Cheetah Websites Inc Cimaware Software SL Clean Space International CleanMyPC Software Codejock Technologies, LLC CoffeeCup Software Comet Network Technology Co Ltd. Comodo CA Limited Comodo CP, Inc Conduit Ltd. ConeXware, Inc. Corel Corporation Crawler, LLC Creative Technology Ltd CrossTec Corporation CV. TweakNow Indonesia CyberDefender Corp. CyberLink Daniel Terhell Dell Inc Diino AB Dillobits Software Diskeeper Corporation DivX, Inc. Doctor Web Ltd. dotPDN LLC DriveSentry Inc Duplex Secure Ltd DzSoft Ltd eEye Digital Security Elaborate Bytes AG Eltima Software Emsi Software GmbH Eric Brewster ES-Computing ESET, spol. s r.o ESET, spol. s r.o. ESTsoft Corp. Executive Software International, Incorporated F-Secure Corporation Farstone Technology Inc Fenrir Inc. FileStream Inc. Finarea SA Flavio Antonioli Flock, Inc. Foxit Software Company FRISK Software International Ltd G P Software Gavrila Martau Genie-Soft GetData Pty Ltd Global Graphics Software Limited GlobalNet Limited GlobalSCAPE, Inc. Globe7 HK Limited Google Inc Google Inc. Greatis Software, LLC Gretech Corp. Headlight Software, Inc. Hewlett Packard HM System Software Inc Hyperionics Technology, LLC ICQ IDM Computer Solutions, Inc. Illustrate Limited Ilya Kheifets iMesh Inc. IN MEDIA KG IncrediMail Ltd. Indigo Rose Software Design Corporation Infacta Innovative Solutions Grup SRL InstallShield Software Corporation Intel Corporation InternetSafety.com Intuit, Inc. Investintech.com Inc. IObit Information Technology IObit.com iolo technologies, LLC iSpring Solutions, Inc. ITAZ TECHNOLOGIES PRIVATE LIMITED IVT SOFTWARE TECHNOLOGY Inc. J. Hepple, Inc. J. River Inc. Javacool Software LLC Jernej Simoncic Jetico, Inc. Journyx Inc. Kaspersky Lab Kinook Software, Inc. LAVALYS Lavasoft AB LeapWare Lexmark International, Inc. LG Software Innovations Lime Wire LLC Linder Software Logitech Logitech Inc LogMeIn, Inc. LSoft Technologies Inc Lunascape Co., Ltd. Macromedia, Inc. Magix AG Malwarebytes Corporation Max Secure Software Maxthon Asia Ltd McAfee, Inc McAfee, Inc. Mediafour Corporation Memeo Inc MetaProducts Corporation Microsoft Corporation Microsoft DRM Publisher Microsoft Windows Microsoft Windows Component Publisher Microsoft Windows Publisher Movavi Ltd Mozilla Corporation Musiclab, LLC MySQL AB NCH Software NCH Swift Sound Neobyte Solutions SRL Nero AG NewsGator Technologies, Inc. NewSoftwares.net Inc. SDN. BHD. Nitro PDF Nokia Nsasoft LLC. NVIDIA Corporation O and O Software GmbH Online Media Technologies Ltd. ooVoo LLC Opera Software ASA Paltalk.com Panda Security S.L Panda Software International Paragon Technologie GmbH ParetoLogic Inc. Patchou PC Tools PC Tools Pty Ltd PeerBlock, LLC Pegasus Imaging Corporation Pepstyle International Limited PGP Corporation PGWARE LLC PhoenixStudio.org Photodex Corporation Piriform Ltd PJLM Software Inc. Plaxo Incorporated Poikosoft Pointstone Software, LLC Promixis, LLC Promosoft Corporation Protection Technology, Ltd. PY Software Qarbon.com Inc. QueTek Consulting Corporation RapidSolution Software AG Raxco Software, Inc. REALiX RealNetworks, Inc. RealVNC Ltd Rediff.com India Limited Research In Motion Rhino Software, Inc. RITLABS S.R.L. Robbie Fletcher Rocket Division Software LTD Rose City Software Safer Networking Ltd. SAMSUNG ELECTRONICS CO.,LTD. Scientific Software International, Inc. Secunia ApS Serengeti Systems Incorporated Siber Systems Simply Super Software SIPphone Inc. Skype Technologies SA SlySoft Inc. Smart PC Solutions, Inc. Smart Projects SmartSoft Ltd Smith Micro Software, Inc. Softdiv Software Softdiv Software Sdn Bhd Softland Softroute Corporation Software602 SolarWinds.Net SolidWorks Corporation Sonic Solutions Sony Creative Software Inc Sony Ericsson Mobile Communication Speed-Bit LTD Stardock Corporation StopMotionPro Pty Ltd Sun Microsystems GmbH Sun Microsystems, Inc. Sunbelt Software Symantec Corporation Tall Emu Tavultesoft Pty Ltd TechPowerUp TechSmith Corporation TeraByte, Inc. The Weather Channel Interactive, Inc. Tonec Inc. Tracker Software Products Ltd Trend Media Corporation Limited Trend Micro, Inc. TrueCrypt Foundation TuneUp Software GmbH Two Pilots Ultimate Systems Uniblue Systems URSoft, Inc. Vendio Services, Inc. Ventis Media, Inc. Vizacc Pte Ltd VMware, Inc. VS Revo Group VSO-SOFTWARE Vuze Inc. Webteh d.o.o. WinAbility Software Corp. Winamp WinZip Computing WordWeb Software Xarka Software Xceed Software Inc. XenCare Software Xequte Software Xfire Xobni Corporation Yahoo! Inc. Zebra Technologies
And here are some not yet trusted vendors:
Against Intuition Oy - http://www.mywot.com/
Beijing ShengjingWanwei Technology Co.,Ltd. - http://www.ioage.com/twen/?op=en
CHENGDU YIWO Tech Development Co., Ltd. - http://www.easeus.com/
CJSC Returnil Software - http://www.returnilvirtualsystem.com/
Comodo Security Solutions 
Comodo Security Solutions, Inc.
CPUID - http://www.cpuid.com/
deepinvent Software GmbH - MailStore - The Standard in Email Archiving
Digital River, Inc. - http://corporate.digitalriver.com
Eastman Kodak Company - http://www.kodak.com/
Emotum Pty Ltd - http://www.emotum.com/
EverNote Corporation - http://www.evernote.com/
Fengtao Software Inc. - http://www.dvdfab.com/
Finansiell ID-Teknik BID AB - http://www.bankid.com/en/What-is-BankID/
Fortinet Technologies - http://www.forticlient.com/
FreeCause, Inc. - http://www.freecause.com/
Garmin International - http://www.garmin.com/garmin/cms/site/us
Ghisler Software GmbH - http://www.ghisler.com/
Glarysoft Ltd - http://www.glaryutilities.com/
Hamrick Software - VueScan Scanner Software for macOS, Windows 10, and Linux
Heaventools Software - http://www.heaventools.com/
Hewlett-Packard Company - Some software still have that signer name, e.g. this installer.
HOYA CORPORATION - HOYA Corporation
IKARUS Software GmbH - http://www.ikarus-software.at/
Immunet Corporation - http://www.immunet.com/
jalbum ab - http://jalbum.net/
Koninklijke Philips Electronics N.V. - http://www.philips.com/
LEGO A/S - http://www.lego.com/
LSoft Technologies Inc - http://www.qtweb.net/
Malwarebytes - http://www.malwarebytes.org/ (RegASSASSIN, StartUpLite)
Microsoft Windows Hardware Compatibility Publisher
MooSoft Development LLC - http://www.moosoft.com/
MOVE NETWORKS, INC. - http://www.movenetworks.com/
Mozilla Messaging Inc. - www.mozillamessaging.com/
NIKON CORPORATION - http://nikon.com/
Norman ASA - http://www.norman.com/
PWI, Inc. - http://www.privacyware.com/
QFX Software Corporation - http://www.qfxsoftware.com/
Quicksys - http://www.myquicksys.com/
Rare Ideas, LLC - http://rareideas.com/ri/
Recoveronix Ltd. - http://www.officerecovery.com/
SANDBOXIE L.T.D - http://www.sandboxie.com/
SecMaker AB - http://en.secmaker.com/
SHANGHAI ZHONGYUAN NETWORKS LIMITED - http://dl.pps.tv/
SIL International - http://www.sil.org/
Sokno S.R.L. - SpeedFan - Access temperature sensor in your computer
Sony Corporation - Sony Support Europe
Spotify Ltd - Spotify - Web Player: Music for everyone
Steinberg Media Technologies GmbH - Creativity First — Our Passion for Music Inspires | Steinberg
Sunbelt Software, Inc. - http://www.sunbeltsoftware.com/
Sysinternals - Process Explorer - Sysinternals | Microsoft Learn (Process Explorer’s driver)
Systweak Inc - http://www.systweak.com/
TeamViewer GmbH - http://www.teamviewer.com/
Technology Nexus AB - http://www.nexussafe.com/en/
Tencent Technology(Shenzhen) Company Limited - http://www.imqq.com/
Voddler Sweden AB - http://www.voddler.com/
Webroot Software, Inc. - http://www.webroot.com/En_US/index.html
Zemana Ltd. - http://www.zemana.com/
