Marc O'Brien
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Marc O'Brien Email & Phone Number

Founder: ProjectLibre Inc. at ProjectLibre
Location: San Mateo, California, United States 6 work roles 1 school
1 work email found @projity.com 16 phones found area 650, 415, 916, 530, 802, and 978 LinkedIn matched
✓ Verified Jul 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 16 phones

Work email m****@projity.com
Direct phone (650) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Founder: ProjectLibre Inc.
Location
San Mateo, California, United States

Who is Marc O'Brien? Overview

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Quick answer

Marc O'Brien is listed as Founder: ProjectLibre Inc. at ProjectLibre, based in San Mateo, California, United States. AeroLeads shows a work email signal at projity.com, phone signal with area code 650, 415, 916, 530, 802, 978, and a matched LinkedIn profile for Marc O'Brien.

Marc O'Brien previously worked as Co-Founder/CEO at Projectlibre and Vice President at Corum Group Ltd.. Marc O'Brien holds Bs, Engineering & Management from Clarkson University.

Company email context

Email format at ProjectLibre

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{first_initial}{last}@projity.com
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AeroLeads found 1 current-domain work email signal for Marc O'Brien. Compare company email patterns before reaching out.

Profile bio

About Marc O'Brien

My background is building successful software companies. I am currently the Chairman/CEO of ProjectLibre, the #1 alternative to Microsoft Project. ProjectLibre has both a Cloud version for teams/companies and a desktop open source solution. ProjectLibre Cloud is essentially "Microsoft Project in your browser" and is being used at companies around the world. ProjectLIbre desktop is open source and has been downloaded over 7,000,000 times in 193 countries. It is used in 1,700 Universities and translated into 31 languages. We manage projects on all 7 continents, yes including Antarctica! My background:β€’ Founder π–πžπ›ππ«π¨π£πžπœπ­: (Aquired after 4 acquisition offers and filed an S-1 for an IPO) β€’ Founder 𝐏𝐫𝐨𝐣𝐒𝐭𝐲 (Acquired by Private Equity firm Silver Lake Partners)β€’ Founder ππ«π¨π£πžπœπ­π‹π’π›π«πž (background below) β€’ 𝐈𝐧𝐯𝐞𝐬𝐭𝐦𝐞𝐧𝐭 𝐁𝐚𝐧𝐀𝐒𝐧𝐠 (M&A representing software companies, won global award)I have been the founder of two SaaS companies which have been acquired. My first had four LOI's and a competitive acquisition process. We subsequently filed our S-1 for an IPO. My other software company was sold to Private Equity powerhouse Silver Lake Parters. My energy is now on building ProjectLibre for long term success around the world. Some articles on my past in Digital, Cloud software, SaaS and Open Sourcehttps://sourceforge.net/blog/february-2016-staff-pick-project-of-the-month-projectlibre/?utm_source=rss&utm_medium=rss&utm_campaign=february-2016-staff-pick-project-of-the-month-projectlibrehttps://www.gartner.com/doc/768023/serena-acquires-projity-stirs-projecthttp://www.eweek.com/servers/serena-acquires-project-management-software-makerhttps://www.linux.com/news/profitability-first-then-open-source-works-projityhttps://www.thefreelibrary.com/Novient+Acquires+WebProject.-a061801700https://www.crunchbase.com/person/marc-o-brien#/entity

Listed skills include Returns, Goldengate, Letters, Serena, and 64 others.

Current workplace

Marc O'Brien's current company

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ProjectLibre
Projectlibre
Founder: ProjectLibre Inc.
AeroLeads page
6 roles · 31 years

Marc O'Brien work experience

A career timeline built from the work history available for this profile.

Co-Founder/Ceo

Current

San Mateo, California, Us

ProjectLibre is the #1 replacement of Microsoft Project. We have been downloaded over 6,000,000 times in over 200 countries, used in 1,500 Universities and translated into 29 languages. ProjectLibre has users on all 7 continents, yes including Antarctica! ProjectLibre is a replacement of Microsoft Project and simply opens projects created in Microsoft Project. ProjectLibre is available on Linux, MacOS or WIndows. We were named "Best of Open Source" and open source 'Project of the Month' in our first month after launching and have cloud/premium versions coming out soon. We were recently awarded InfoWorld's "Best of Open Source"!

Jul 2012 - Present

Vice President

Bothell, Washington, Us

A natural pivot after twice Founding and Growing successful software companies that were aquired. I moved from building software companies to assisting successful software companies in Merger and Acquisitions. Won a global award from Corum representing software companies in the Acquisition path forward. A great company but the drive to build another software winner made this a detour.

Aug 2017 - Apr 2019

Vice President & General Manager: Social Software And Drupal Applications

Boston, Ma, Us

Jul 2011 - Jul 2012

Vice President Saas

Serena Software

I was the founder/CEO of Projity which was acquired by Serena Software in 2008. Here is the Gartner analysis https://www.gartner.com/doc/768023

2008 - 2011 ~3 yrs

Ceo/Founder

Projity Incorporated

I was the Founder/CEO of Projity which was acquired by Serena Software. Projity is a leading provider of Software as a Service (SaaS) and open source project management software. The OpenProj application is used in over 146 countries with over 4 million users worldwide.

2000 - 2008 ~8 yrs

Founder And Ceo

Webproject

WebProject was my first company acquired. WebProject was a pioneer in On-Demand applications with the backing of Cisco and Sun Microsystems. . It was acquired by Novient. You can look up the Irish luck on timing :-) My team stayed for a short period and moved on.... we are still together as a core team. I am professionally and personally very proud!

1996 - 2000 ~4 yrs
1 education record

Marc O'Brien education

  • Clarkson University
    Clarkson University
    Engineering & Management
FAQ

Frequently asked questions about Marc O'Brien

Quick answers generated from the profile data available on this page.

What company does Marc O'Brien work for?

Marc O'Brien works for ProjectLibre.

What is Marc O'Brien's role at ProjectLibre?

Marc O'Brien is listed as Founder: ProjectLibre Inc. at ProjectLibre.

What is Marc O'Brien's email address?

AeroLeads has found 1 work email signal at @projity.com for Marc O'Brien at ProjectLibre.

What is Marc O'Brien's phone number?

AeroLeads has found 16 phone signal(s) with area code 650, 415, 916, 530, 802, 978 for Marc O'Brien at ProjectLibre.

Where is Marc O'Brien based?

Marc O'Brien is based in San Mateo, California, United States while working with ProjectLibre.

What companies has Marc O'Brien worked for?

Marc O'Brien has worked for Projectlibre, Corum Group Ltd., Acquia, Serena Software, and Projity Incorporated.

How can I contact Marc O'Brien?

You can use AeroLeads to view verified contact signals for Marc O'Brien at ProjectLibre, including work email, phone, and LinkedIn data when available.

What schools did Marc O'Brien attend?

Marc O'Brien holds Bs, Engineering & Management from Clarkson University.

What skills is Marc O'Brien known for?

Marc O'Brien is listed with skills including Returns, Goldengate, Letters, Serena, Bamboo, Boston, Help Desk Support, and Market.

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