A single entity. A single standard.
Six ways to serve the professions.
Cadistics LLC exists to advance the licensed professions — delivering rigorous, board-compliant continuing education that engineers, surveyors, and geologists can trust, at a price that respects the professional and a pace that respects their practice.
Seventeen years, one reputation
Cadistics began in 2009 with a single conviction: that continuing education for Professional Engineers should be written by engineers who hold the same license — and priced like a professional courtesy, not a toll booth.
That conviction became Online-PDH.com, which grew into one of the most trusted independent PDH providers in the country: 800+ courses, 4,500+ hours of instruction, and a record no competitor can casually claim — not one course denied by any state board, ever.
Today Cadistics LLC is the corporate home of that flagship and five discipline-focused brands, each carrying the same standard to a specific profession. One entity. One owner. One reputation behind all six.
What we hold ourselves to
Licensed rigor
Every course is authored and reviewed under the direct oversight of licensed professionals. The license is the standard.
Board compliance, proven
NCEES-aligned development and a seventeen-year, zero-denial acceptance record across state licensing boards.
Trust before transaction
Professionals preview courses in full before paying. We earn the sale with the material itself.
Respect for the professional
Fair, flat pricing. Self-paced formats. No artificial hurdles between a licensee and their renewal.
Discipline focus
Each brand serves one profession deeply rather than every profession thinly.
Accountability by design
A single-entity enterprise means one owner’s name — and license — stands behind every course in the portfolio.
The road to a family of brands
- 2009
Online-PDH.com founded
A licensed PE launches a self-paced PDH platform on a trust-first model: preview every course before paying.
- 2009 – 2026
The catalog becomes an institution
Growth to 800+ courses and 4,500+ hours across every major engineering discipline — with zero courses ever denied by a state board.
- 2026
The discipline brands launch
SurveyorCE, ElectricalCE, CivilCE, MechanicalCE, and GeotechCE bring the flagship’s standard to each profession individually.
- Today
Cadistics LLC
The corporate home of all six brands — a single-entity enterprise with one standard and one reputation behind everything it publishes.
See the standard in practice
Read how every Cadistics course is developed, reviewed, and kept compliant.