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C3
by C3
What C3 is
C3 is ATG’s enterprise software for managing community operations, aimed at community management companies and self-managed associations. It brings financial work such as accounts receivable and payable, budgeting, reporting, and delinquency processing together with association management, work orders, maintenance, architectural review, and covenant tracking. The product also supports online dues collection and association accounting, and is listed for web and Android, with mobile apps available. ATG describes its cloud offering as providing users access to data 24/7. Its TownSq integration supports resident engagement, payments, amenity reservations, maintenance requests, association documents, and task updates. Other integration partners support invoice processing, mailing, and check printing, while banking partners can connect to automate banking tasks. ATG offers a standard or custom implementation approach and says specialists work to reconcile accounts from previous software. Initial training is web-based, with onsite training available as needed. Phone support runs Monday through Friday, 8:30 a.m. to 6 p.m. Eastern; email is available 24/7 for business-critical problems or emergencies. Pricing is on request.
Who it suits
C3 may suit community management companies and self-managed associations that need financial and operational tools in one system. It is also relevant to organizations seeking implementation and training support from ATG.
What it does well
- Handles dues collection and association accounting
- Includes maintenance and work-order functions
- TownSq supports resident payments and engagement
- Offers web-based initial training
What to know first
- Pricing is available on request
- Phone support is limited to weekday hours
Getting started
- Visit the ATG C3 website.
- Contact ATG to request pricing.
- Choose a best-practice setup or a custom implementation plan with ATG.
- Arrange account reconciliation from your previous software.
- Use web-based initial training or request onsite training as needed.
Verdict
C3 covers financial administration alongside community operations, with TownSq and other partner integrations extending its listed functions. Buyers will need to request pricing and consider ATG’s implementation and training options.
Questions
How much does C3 cost?
C3 is paid, and pricing is available on request.
Which platforms support C3?
The listed platforms are web and Android, and mobile apps are part of its offering.
Who is C3 for?
ATG presents it for community management companies and self-managed associations.
What does C3 cover?
Its listed functions include financial management, dues collection, accounting, work orders, maintenance, architectural management, and covenant tracking.
What integrations are available?
TownSq is integrated with ATG for resident services and task updates. C3 integration partners support invoice processing, mailing, check printing, and other functions; banking partners can connect to automate banking tasks.
What training and support does ATG offer?
Initial training is web-based, with onsite training available as needed. Phone support is available Monday through Friday, 8:30 a.m. to 6 p.m. Eastern, and email is available outside those hours for business-critical issues and emergencies.
Facts from C3's own pages
- Association accounting
- Yes · atgonline.com, 20 Sept 2026
- Audience
- ATG presents C3 as a solution for both community management companies and self-managed associations. · atgonline.com, 10 Oct 2026
- Banking integrations
- ATG says banking partners integrate with C3 to let communities automate banking tasks from C3. · atgonline.com, 9 Oct 2026
- Cloud access
- ATG says C3’s cloud offering is designed to scale and provide users access to data 24/7. · atgonline.com, 10 Oct 2026
- Company founded
- ATG says it was founded in 1991 and introduced C3 in 1994. · atgonline.com, 9 Oct 2026
- Company history
- ATG says it was founded in 1991 and introduced C3 to the market in 1994. · atgonline.com, 10 Oct 2026
- Company identity
- ATG identifies itself as Advanced Technology Group, Inc. · atgonline.com, 9 Oct 2026
- Financial features
- Listed functions include financial management, accounts receivable and payable, budgeting, reporting, and delinquency processing. · atgonline.com, 9 Oct 2026
- Financial tools
- C3 functions include financial management, accounts receivable and payable, budgeting, reporting, and delinquency processing. · atgonline.com, 10 Oct 2026
- Founded
- 1991 · atgonline.com, 28 Sept 2026
- Implementation
- ATG offers a best-practice implementation package or a custom plan, and says its specialists work to reconcile accounts between C3 and prior software. · atgonline.com, 10 Oct 2026
- Integration partners
- ATG says its C3 integration partners support invoice processing, mailing, check printing, and other functions. · atgonline.com, 9 Oct 2026
- Integrations
- ATG says its integration partners connect with C3 for invoice processing, mailing, check printing, and other tasks. · atgonline.com, 10 Oct 2026
- Maintenance requests
- Yes · atgonline.com, 20 Sept 2026
- Mobile apps
- Yes · atgonline.com, 20 Sept 2026
- Online dues collection
- Yes · atgonline.com, 20 Sept 2026
- Operations features
- Listed functions also include association management, work orders, maintenance, architectural management, and covenant tracking. · atgonline.com, 9 Oct 2026
- Operations tools
- C3 functions include association management, work orders, maintenance, architectural review, and covenant tracking. · atgonline.com, 10 Oct 2026
- Product
- C3 is ATG’s proprietary enterprise management software for tracking community operations. · atgonline.com, 10 Oct 2026
- Purpose
- C3 is ATG’s proprietary enterprise management software for tracking community operations. · atgonline.com, 9 Oct 2026
- Security
- ATG’s C3 page describes a cloud offering with 24/7 user access, but the opened C3 and trust-related pages did not state a C3 security certification or compliance standard. · atgonline.com, 9 Oct 2026
- Security process
- ATG’s API integration process gives partners custom credentials for a test environment and tests the connection before partners can access real data. · atgonline.com, 10 Oct 2026
- Support
- ATG customer support is available by phone Monday through Friday, 8:30 a.m. to 6 p.m. Eastern, and by email 24/7 for business-critical problems or emergencies. · atgonline.com, 9 Oct 2026
- Support hours
- ATG customer support is available by phone Monday through Friday, 8:30 a.m. to 6:00 p.m. Eastern, with email availability outside those hours for business-critical issues and emergencies. · atgonline.com, 10 Oct 2026
Where C3 stands on Freedom251
- HOA Accounting Software#15 of 25
- HOA Management Software#76 of 87