InfoService Provides custom database solutions including analysis, design, programming and support services. http://www.infoservice.com/

Barrymore Information Technology, Inc. Custom cross-platform software development using 4th Dimension and internet technologies. http://www.barrymore.com/

Outside Technology Marin County consultancy building custom client-server 4D systems for Macintosh and Windows. Publisher of Book'em!, a reservations system for outdoor recreation companies; ClassMaker, management software for language schools; and DataLicense, the security system for 4D developers. http://www.outsidetech.com/

HD Industries, Inc. Providing custom database software and systems support since 1990. http://www.hdind.com/

Braided Matrix, Inc. Source code, analysis, design, programming, and project management for the purpose of creating integrated systems based on the 4th Quarter Accounting Solution platform. http://www.4thquarter.com

Syncor Systems, Inc. 4D and Oracle database consultants and publisher of Syncor's Design Assistant. SDA is a method editor productivity toolbar for 4D. http://www.syncorsystems.com/

Business Brothers Software Products, Inc. Custom and vertical market software developer and reseller, and systems integrator specialized in 4th Dimension since 1987. http://www.bbros.com

Mitchenall.com Specialists in providing high-quality, training, consultancy, products and bespoke development for all types of business requirements. http://www.mitchenall.com/

MPA Inc. Custom cross platform 4D database developers and web hosting services. Custom web servers and database web servers without middleware. http://www.mpa-inc.com/

DataCraft, Inc. Offers software solutions for meetings, conferences, and trade shows. DataCraft also offer tools and support for 4th Dimension database developers. http://www.datacraft-inc.com/

Deep Sky Technologies, Inc. Software and database consultants for direct market, custom, and internet enabled applications. Repected as one of the best 4D development shops in the world. http://www.deepskytech.com/

Rietz Enterprises Custom database solutions specializing in 4th Dimension including integration with World Wide Web and telephony systems. http://www.think-different.com

Wizdom Microsystems, Inc. Developers of custom 4th Dimension solutions for business, research & technology firms of all sizes. Stand alone, client/server, SQL front ending, Web front ending. 15 years of database experience. http://www.wizmicro.com

Escape Information Services Maker of the leading multimedia plug-ins and of other quality enhancements for 4D. Custom development of imaging plug-ins, QuickTime components, and industrial-strength optimizers. http://www.escape.gr/

Tech Solutions Inc. Computer consulting firm specializing in the sale and development of computer software for web and client/server applications. http://www.techsol.org/

Dr. Billy & Associates Apple Macintosh computer, software, 4D 4th Dimension relational database development, professional eCommerce and web page site design freelance consultants serving businesses from San Diego to Santa Barbara. http://www.drbilly.com/

Cadence Development Provides database consulting services using 4th Dimension and FileMaker Pro. http://www.cadencedevelopment.com/

Matrix Software Developers of database publishing systems for the newspaper, retail, catalogue, print and publishing markets. http://www.matrixsoftware.co.uk

A&G Development BOA, a 4D software package for administrative use, that includes accounting, construction, calculation, and web publishing). http://www.a-g.be/indexen.html

Mac Solutions Customised software development on 4D for Macintosh, Windows, Intranet, and client-server. Experience in porting FileMaker Pro databases to 4D. http://www.macsolutionsindia.com/