Specific to the financial metrics, which Rob will detail shortly, revenue, EBITDA, DEPS and cash flow, all grew north of 20% in the quarter.
Our software businesses, which now make up over 55% of our revenue base performed very well in the quarter.
Specifically, on an organic basis, we grew our Application Software segment 9% and grew our software businesses within our NSS segment 10%.
Across our software businesses, we saw the acceleration of our recurring revenue growth, approximately 80% of our soft revenues from mid-singles to high-singles and a solid recovery of perpetual license activity.
Importantly, and consistent with our guidance over the last three quarters, we continue to delever our balance sheet at a rapid pace now under 4 times debt to EBITDA.
Total revenue increased 22% to $1.59 billion another record for any Roper quarter.
Q2 organic revenue growth was 7% versus last year's comp of minus 3.
Q2 EBITDA grew 26% to $579 million and EBITDA margin increased to 110 basis points to 36.4%.
Adjusted DEPS was $3.76, 28% above prior year and also above our Q2 guidance range of $3.61 to $3.65.
Free cash flow was $409 million, up a very strong 30% versus last year.
Net working capital was negative 8%, we continue to benefit from Roper's transformation to a high recurring revenue, majority software business model that is structurally designed to consistently drive high cash conversion.
Lastly, we have been laser-focused on debt reduction this year after last year's record capital deployment and we continue to make great progress on that front with an additional $375 million paid down in Q2.
Through the first half of 2021, we have now reduced our net debt by nearly $900 million, raising the total debt reduction to approximately $1.4 billion, since completing the 2020 acquisitions late last year.
Our debt reduction along with the meaningful contributions from our 2020 acquisitions has enabled us to rapidly lower our net debt to EBITDA ratio from 4.7 times to 3.8 times in only six months.
Revenues in this segment were $592 million, up 9% on an organic basis.
As a reminder, this segment grew 1% organically last year aided by strong results from our lab software franchises that were critical to the COVID response.
EBITDA margins were 43.7% in the quarter.
Across the segment, we saw organic recurring revenue, which is a touch north of 75% of the revenue for the segment increased approximately 9%.
To that end, the non-recurring organic revenue in this segment grew 9% as well.
Turning to Page 10.
Revenues in our network segment were $459 million, up 5% on an organic basis, and EBITDA margins were 42.5% in the quarter.
Our software businesses in this segment about 65% of the revenues were, up 10% on an organic basis.
This growth was broad-based among our software businesses and driven by organic recurring revenue growth of approximately 11%.
Based on the New York TransCore project pushing to the right, we now expect about $40 million of this projects revenue to push-out of the second half of the year and into 2022.
As we turn to Page 11, revenues and our MAS segment were $397 million, up 7% on organic basis.
Organic growth in this segment excluding Verathon was north of 20%.
EBITDA margins for the segment were 33.4% in the quarter.
Verathon coming off unprecedented demand for their intubation family of products a year ago is roughly 40% larger today versus 2019.
As we turn to Page 12, revenues in our Process Tech segment were $140 million, up 13% on an organic basis.
EBITDA margins improved by over 500 basis points to 32.8% in the quarter.
As we turn to the outlook for the balance of the year, we expect 20%-plus organic growth based on improving market conditions and continued easing comps.
Now please turn to Page 14 and I'll highlight our increased guidance for 2021.
Based on strong first half performance improvement to our recurring revenue growth rates and improving market conditions, we are raising our full-year adjusted DEPS to be in the range of $15 and $15.20 per share.
Of note, our prior high-end DEPS guidance was 15% now the bottom end of our range.
Also, we are increasing our guidance notwithstanding pushing roughly $40 million of the TransCore New York City project into next year, providing everyone a good sense of how strong the balance of our portfolio is performing.
Our full-year organic growth is expected to be 7% or a touch higher.
Our tax rate should continue to be in the 21% to 22% range.
For the third quarter, we're establishing adjusted DEPS guidance to be between $3.80 and $3.84.
Turning to Page 15, and our closing summary.
This is a very strong quarter for enterprise with softer revenues growing on an organic basis 9% in our Application Software segment and 10% for our software businesses and our NSF segment.
We performed very well virtually in every financial metric, growing 20% plus in revenue, EBITDA, DEPS and cash flow.
EBITDA margins expanded by 110 basis points and free cash flow increased 30%, to $409 million in the quarter.
As promised, we continue to delever our balance sheet, reducing debt by $375 million in the quarter and by $1.4 billion, since completing our 2020 acquisitions in Q4 of last year.

Summary:
Total revenue increased 22% to $1.59 billion another record for any Roper quarter.
Adjusted DEPS was $3.76, 28% above prior year and also above our Q2 guidance range of $3.61 to $3.65.
Based on strong first half performance improvement to our recurring revenue growth rates and improving market conditions, we are raising our full-year adjusted DEPS to be in the range of $15 and $15.20 per share.
For the third quarter, we're establishing adjusted DEPS guidance to be between $3.80 and $3.84.