Skip to content
SPECIFICTION
Get listed

C3

atgonline.com

WebAndroid
Visit atgonline.com
Spec score 7.8 #12 of 25 in HOA Accounting Software

What it is

C3 is ATG’s proprietary enterprise management software for tracking community operations. It is presented for community management companies and self-managed associations, with Android and web access and mobile apps. Financial functions include financial management, accounts receivable and payable, budgeting, reporting, and delinquency processing. Operational tools cover association management, work orders, maintenance, architectural management, and covenant tracking. The system supports online dues collection, maintenance requests, and association accounting. ATG describes a cloud offering intended to scale with a company and provide data access 24/7. TownSq integrates with ATG for resident engagement, payments, amenity reservations, maintenance requests, association documents, and task updates. Other integrations cover invoice processing, mailing, check printing, and banking automation. ATG offers standard or custom implementation, account reconciliation, web-based training, optional onsite training, and phone and email support. Pricing is paid and available on request.

Spec sheet

Purpose
C3 is ATG’s proprietary enterprise management software for tracking community operations.Read 9 Oct 2026 · atgonline.com
Product
C3 is ATG’s proprietary enterprise management software for tracking community operations.Read 10 Oct 2026 · atgonline.com
Audience
ATG presents C3 as a solution for both community management companies and self-managed associations.Read 10 Oct 2026 · atgonline.com
Integrations
ATG says its integration partners connect with C3 for invoice processing, mailing, check printing, and other tasks.Read 10 Oct 2026 · atgonline.com
Mobile apps
YesRead 20 Sep 2026 · atgonline.com
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.Read 9 Oct 2026 · atgonline.com
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.Read 9 Oct 2026 · atgonline.com
Founded
1991Read 28 Sep 2026 · atgonline.com
Association accounting
YesRead 20 Sep 2026 · atgonline.com
Banking integrations
ATG says banking partners integrate with C3 to let communities automate banking tasks from C3.Read 9 Oct 2026 · atgonline.com
Cloud access
ATG says C3’s cloud offering is designed to scale and provide users access to data 24/7.Read 10 Oct 2026 · atgonline.com
Company founded
ATG says it was founded in 1991 and introduced C3 in 1994.Read 9 Oct 2026 · atgonline.com
Company history
ATG says it was founded in 1991 and introduced C3 to the market in 1994.Read 10 Oct 2026 · atgonline.com
Company identity
ATG identifies itself as Advanced Technology Group, Inc.Read 9 Oct 2026 · atgonline.com
Financial features
Listed functions include financial management, accounts receivable and payable, budgeting, reporting, and delinquency processing.Read 9 Oct 2026 · atgonline.com
Financial tools
C3 functions include financial management, accounts receivable and payable, budgeting, reporting, and delinquency processing.Read 10 Oct 2026 · atgonline.com
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.Read 10 Oct 2026 · atgonline.com
Integration partners
ATG says its C3 integration partners support invoice processing, mailing, check printing, and other functions.Read 9 Oct 2026 · atgonline.com
Maintenance requests
YesRead 20 Sep 2026 · atgonline.com
Online dues collection
YesRead 20 Sep 2026 · atgonline.com
Operations features
Listed functions also include association management, work orders, maintenance, architectural management, and covenant tracking.Read 9 Oct 2026 · atgonline.com
Operations tools
C3 functions include association management, work orders, maintenance, architectural review, and covenant tracking.Read 10 Oct 2026 · atgonline.com
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.Read 10 Oct 2026 · atgonline.com
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.Read 10 Oct 2026 · atgonline.com
Target users
ATG presents C3 as a solution for community management companies and self-managed associations.Read 9 Oct 2026 · atgonline.com
TownSq integration
ATG says TownSq is fully integrated with ATG and supports resident engagement, payments, common-area reservations, maintenance requests, association documents, and task updates.Read 10 Oct 2026 · atgonline.com
Training
ATG offers web-based initial training and onsite training as needed, including Q&A, consulting, and training with the client’s data.Read 10 Oct 2026 · atgonline.com

Strong points and limits

Strong points

  • Online dues collection and association accounting
  • Budgeting, reporting, and delinquency processing
  • Work orders, maintenance, and covenant tracking
  • TownSq integration for resident services
  • Cloud access described as available 24/7

Limits

  • Pricing is available only on request
  • Phone support is limited to weekday hours

Who it suits

C3 suits community management companies and self-managed associations needing financial, dues, maintenance, and covenant workflows. It fits organizations seeking Android or web access with implementation and training support.

Verdict

C3 covers financial administration and day-to-day association operations in one system. Buyers should request pricing and confirm whether its integrations, implementation, and support arrangements fit their organization.

Where Specifiction places it

Alternatives to C3All alternatives →