MainSpring, Inc. (formerly CNS and Anvil Dataworks)

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About MainSpring, Inc. (formerly CNS and Anvil Dataworks)

MainSpring, Inc., is an IT strategy and consulting firm that arms organizations with the strategy, tools and resources to grow. We foster a family-friendly, innovative, challenging, fun working environment earning the distinction of being one of The Washingtonian’s 50 Great Places to Work and countless awards for employee programs, growth and innovation.

MainSpring is a leader in application development and is a trusted FileMaker Platinum Partner. MainSpring is the largest FileMaker developer in the Greater Washington D.C. and Baltimore metropolitan areas and has earned numerous awards, including FileMaker Business Driver and Business Partner of the Year Awards in 2013 and 2014.

MainSpring FileMaker experts regularly share their expertise and client stories and contribute to FileMaker development forums, organize and host community user groups in D.C. and Ohio, and present at FileMaker Developer’s Conference (DevCon) annually.

MainSpring’s team of certified FileMaker developers, trainers and project managers work directly with a wide range of clients worldwide, including businesses, non-profits, as well as local and federal government agencies, to develop solutions that align with organizational goals and impact the bottom line. Founded in 1993, MainSpring is headquartered in Poolesville, Md., with offices in Florida, Ohio, Washington and Wisconsin, serving clients across the U.S. and abroad.

MainSpring’s promise is to deliver strategy, simplicity and innovation in ways that help organizations grow and better control their mission. See for yourself at

Methods of training offered

  • Classroom training
  • Client-site training
  • Customized training
  • Out of area training
  • Average number of students per class: 20
  • Number of full-time Trainers: 3
  • Number of part-time Trainers: 1

The consultant listings are offered as a convenience and for informational purposes only, not as an endorsement or recommendation by FileMaker, Inc. (“FileMaker”). Listing information is provided by the member companies themselves and, except with respect to verifying claimed FileMaker certifications, FileMaker has not made any investigation of the qualifications or certifications included in a member's listing. FileMaker certifications are held by individual consultants rather than member companies, and inclusion of a FileMaker certification in a member company's listing does not guarantee that all consultants affiliated with the member hold that certification.

When you work with a FileMaker independent consultant, you contract directly with the member company and not with FileMaker, and it is up to you to select a consultant whose skills and certifications meet your needs. Member companies and consultants are not authorized to represent FileMaker or act on FileMaker's behalf, and FileMaker will not be liable for their acts or omissions. FileMaker does not guarantee the accuracy, suitability, integrity, non-infringement or quality of this content.

* This number does not represent the total number of developers on staff. A developer may be certified in more than one version of FileMaker Pro.

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Locations Served

MainSpring is headquartered in Poolesville, Md., with offices in Florida, Ohio, Washington and Wisconsin, serving clients across the U.S. and abroad.

20010 Fisher Avenue
Box 505
Poolesville, MD
Primary Contact: Charles Melton